./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-53.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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/hardness-nfm22/hardness_operatoramount_amount250_file-53.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 7cb9b30dbc4292cb9b2a5d2ba3cd92c29fce78cf71613b08638f29c6cc332119 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 04:30:24,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 04:30:24,741 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 04:30:24,745 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 04:30:24,747 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 04:30:24,766 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 04:30:24,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 04:30:24,767 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 04:30:24,767 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 04:30:24,767 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 04:30:24,767 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 04:30:24,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 04:30:24,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 04:30:24,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 04:30:24,768 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 04:30:24,770 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 04:30:24,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 04:30:24,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 04:30:24,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 04:30:24,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:30:24,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 04:30:24,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 04:30:24,771 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 04:30:24,771 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 04:30:24,771 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 04:30:24,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 04:30:24,771 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 04:30:24,771 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 04:30:24,771 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 04:30:24,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 04:30:24,772 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cb9b30dbc4292cb9b2a5d2ba3cd92c29fce78cf71613b08638f29c6cc332119 [2025-03-17 04:30:24,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 04:30:24,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 04:30:24,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 04:30:24,986 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 04:30:24,986 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 04:30:24,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-53.i [2025-03-17 04:30:26,182 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ed09764/b6b4f07ac48247d48e6115eeefda6264/FLAG903309b04 [2025-03-17 04:30:26,428 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 04:30:26,429 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-53.i [2025-03-17 04:30:26,440 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ed09764/b6b4f07ac48247d48e6115eeefda6264/FLAG903309b04 [2025-03-17 04:30:26,451 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ed09764/b6b4f07ac48247d48e6115eeefda6264 [2025-03-17 04:30:26,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 04:30:26,455 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 04:30:26,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 04:30:26,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 04:30:26,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 04:30:26,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:26,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e9330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26, skipping insertion in model container [2025-03-17 04:30:26,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:26,488 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 04:30:26,610 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/hardness-nfm22/hardness_operatoramount_amount250_file-53.i[916,929] [2025-03-17 04:30:26,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:30:26,717 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 04:30:26,728 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/hardness-nfm22/hardness_operatoramount_amount250_file-53.i[916,929] [2025-03-17 04:30:26,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:30:26,815 INFO L204 MainTranslator]: Completed translation [2025-03-17 04:30:26,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26 WrapperNode [2025-03-17 04:30:26,817 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 04:30:26,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 04:30:26,818 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 04:30:26,818 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 04:30:26,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:26,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:26,905 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 409 [2025-03-17 04:30:26,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 04:30:26,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 04:30:26,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 04:30:26,906 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 04:30:26,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:26,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:26,924 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:26,957 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]. [2025-03-17 04:30:26,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:26,959 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:26,974 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:26,982 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:26,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:26,992 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:27,001 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 04:30:27,002 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 04:30:27,002 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 04:30:27,003 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 04:30:27,003 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (1/1) ... [2025-03-17 04:30:27,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:30:27,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:30:27,027 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) [2025-03-17 04:30:27,033 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 [2025-03-17 04:30:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 04:30:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 04:30:27,049 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 04:30:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 04:30:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 04:30:27,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 04:30:27,126 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 04:30:27,128 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 04:30:27,700 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L376: havoc property_#t~ite36#1;havoc property_#t~bitwise35#1;havoc property_#t~short37#1;havoc property_#t~ite39#1;havoc property_#t~bitwise38#1;havoc property_#t~short40#1; [2025-03-17 04:30:27,765 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2025-03-17 04:30:27,766 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 04:30:27,784 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 04:30:27,786 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-17 04:30:27,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:30:27 BoogieIcfgContainer [2025-03-17 04:30:27,787 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 04:30:27,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 04:30:27,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 04:30:27,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 04:30:27,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 04:30:26" (1/3) ... [2025-03-17 04:30:27,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30100d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:30:27, skipping insertion in model container [2025-03-17 04:30:27,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:30:26" (2/3) ... [2025-03-17 04:30:27,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30100d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:30:27, skipping insertion in model container [2025-03-17 04:30:27,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:30:27" (3/3) ... [2025-03-17 04:30:27,795 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-53.i [2025-03-17 04:30:27,806 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 04:30:27,809 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-53.i that has 2 procedures, 164 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 04:30:27,868 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 04:30:27,878 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;@3f5ee87d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 04:30:27,880 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 04:30:27,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 117 states have internal predecessors, (173), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-17 04:30:27,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-17 04:30:27,901 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:27,902 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:27,903 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:27,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:27,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1872102526, now seen corresponding path program 1 times [2025-03-17 04:30:27,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:27,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447396181] [2025-03-17 04:30:27,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:27,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:28,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:30:28,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:30:28,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:28,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2025-03-17 04:30:28,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:28,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447396181] [2025-03-17 04:30:28,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447396181] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:30:28,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093763593] [2025-03-17 04:30:28,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:28,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:30:28,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:30:28,378 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) [2025-03-17 04:30:28,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 04:30:28,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:30:28,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:30:28,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:28,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:28,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 04:30:28,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:30:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2025-03-17 04:30:28,704 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 04:30:28,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093763593] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:30:28,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 04:30:28,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 04:30:28,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060100582] [2025-03-17 04:30:28,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:30:28,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 04:30:28,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:28,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 04:30:28,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:30:28,727 INFO L87 Difference]: Start difference. First operand has 164 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 117 states have internal predecessors, (173), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-17 04:30:28,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:28,767 INFO L93 Difference]: Finished difference Result 323 states and 565 transitions. [2025-03-17 04:30:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 04:30:28,769 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) Word has length 302 [2025-03-17 04:30:28,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:28,774 INFO L225 Difference]: With dead ends: 323 [2025-03-17 04:30:28,774 INFO L226 Difference]: Without dead ends: 160 [2025-03-17 04:30:28,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:30:28,779 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:28,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:30:28,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2025-03-17 04:30:28,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2025-03-17 04:30:28,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 113 states have (on average 1.4513274336283186) internal successors, (164), 113 states have internal predecessors, (164), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-17 04:30:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 254 transitions. [2025-03-17 04:30:28,814 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 254 transitions. Word has length 302 [2025-03-17 04:30:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:28,814 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 254 transitions. [2025-03-17 04:30:28,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-17 04:30:28,815 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 254 transitions. [2025-03-17 04:30:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-17 04:30:28,819 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:28,820 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:28,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 04:30:29,021 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,SelfDestructingSolverStorable0 [2025-03-17 04:30:29,021 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:29,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:29,022 INFO L85 PathProgramCache]: Analyzing trace with hash 996522307, now seen corresponding path program 1 times [2025-03-17 04:30:29,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:29,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212697764] [2025-03-17 04:30:29,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:29,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:29,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:30:29,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:30:29,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:29,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:30:29,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212697764] [2025-03-17 04:30:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212697764] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:30:29,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:30:29,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:30:29,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799895448] [2025-03-17 04:30:29,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:30:29,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:30:29,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:29,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:30:29,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:30:29,371 INFO L87 Difference]: Start difference. First operand 160 states and 254 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:29,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:29,468 INFO L93 Difference]: Finished difference Result 467 states and 740 transitions. [2025-03-17 04:30:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:30:29,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 302 [2025-03-17 04:30:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:29,475 INFO L225 Difference]: With dead ends: 467 [2025-03-17 04:30:29,476 INFO L226 Difference]: Without dead ends: 308 [2025-03-17 04:30:29,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:30:29,479 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 232 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:29,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 686 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:30:29,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-03-17 04:30:29,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 179. [2025-03-17 04:30:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 132 states have (on average 1.4621212121212122) internal successors, (193), 132 states have internal predecessors, (193), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-17 04:30:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 283 transitions. [2025-03-17 04:30:29,506 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 283 transitions. Word has length 302 [2025-03-17 04:30:29,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:29,508 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 283 transitions. [2025-03-17 04:30:29,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:29,510 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 283 transitions. [2025-03-17 04:30:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-17 04:30:29,515 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:29,515 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:29,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 04:30:29,516 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:29,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:29,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1834825790, now seen corresponding path program 1 times [2025-03-17 04:30:29,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:29,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552217878] [2025-03-17 04:30:29,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:29,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:29,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:30:29,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:30:29,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:29,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:30:30,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:30,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552217878] [2025-03-17 04:30:30,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552217878] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:30:30,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:30:30,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:30:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625848888] [2025-03-17 04:30:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:30:30,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:30:30,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:30,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:30:30,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:30:30,021 INFO L87 Difference]: Start difference. First operand 179 states and 283 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:30,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:30,340 INFO L93 Difference]: Finished difference Result 477 states and 749 transitions. [2025-03-17 04:30:30,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:30:30,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 302 [2025-03-17 04:30:30,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:30,345 INFO L225 Difference]: With dead ends: 477 [2025-03-17 04:30:30,345 INFO L226 Difference]: Without dead ends: 299 [2025-03-17 04:30:30,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:30:30,347 INFO L435 NwaCegarLoop]: 412 mSDtfsCounter, 178 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:30,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1255 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:30:30,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2025-03-17 04:30:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 183. [2025-03-17 04:30:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 136 states have (on average 1.4485294117647058) internal successors, (197), 136 states have internal predecessors, (197), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-17 04:30:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 287 transitions. [2025-03-17 04:30:30,372 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 287 transitions. Word has length 302 [2025-03-17 04:30:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:30,373 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 287 transitions. [2025-03-17 04:30:30,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 287 transitions. [2025-03-17 04:30:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-17 04:30:30,378 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:30,378 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:30,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 04:30:30,378 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:30,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:30,379 INFO L85 PathProgramCache]: Analyzing trace with hash 663190147, now seen corresponding path program 1 times [2025-03-17 04:30:30,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:30,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697828111] [2025-03-17 04:30:30,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:30,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:30,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:30:30,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:30:30,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:30,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:30:30,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:30,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697828111] [2025-03-17 04:30:30,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697828111] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:30:30,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:30:30,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:30:30,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021508706] [2025-03-17 04:30:30,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:30:30,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:30:30,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:30,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:30:30,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:30:30,983 INFO L87 Difference]: Start difference. First operand 183 states and 287 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:31,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:31,198 INFO L93 Difference]: Finished difference Result 580 states and 905 transitions. [2025-03-17 04:30:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:30:31,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 302 [2025-03-17 04:30:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:31,204 INFO L225 Difference]: With dead ends: 580 [2025-03-17 04:30:31,204 INFO L226 Difference]: Without dead ends: 398 [2025-03-17 04:30:31,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:30:31,206 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 283 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:31,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 774 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:30:31,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2025-03-17 04:30:31,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 350. [2025-03-17 04:30:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 257 states have (on average 1.4357976653696498) internal successors, (369), 257 states have internal predecessors, (369), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2025-03-17 04:30:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 549 transitions. [2025-03-17 04:30:31,240 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 549 transitions. Word has length 302 [2025-03-17 04:30:31,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:31,241 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 549 transitions. [2025-03-17 04:30:31,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:31,241 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 549 transitions. [2025-03-17 04:30:31,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-17 04:30:31,243 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:31,244 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:31,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 04:30:31,244 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:31,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:31,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1272470140, now seen corresponding path program 1 times [2025-03-17 04:30:31,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:31,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462381388] [2025-03-17 04:30:31,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:31,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:31,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:30:31,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:30:31,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:31,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:30:32,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:32,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462381388] [2025-03-17 04:30:32,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462381388] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:30:32,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:30:32,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 04:30:32,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626777032] [2025-03-17 04:30:32,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:30:32,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 04:30:32,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:32,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 04:30:32,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:30:32,266 INFO L87 Difference]: Start difference. First operand 350 states and 549 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:32,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:32,736 INFO L93 Difference]: Finished difference Result 1065 states and 1661 transitions. [2025-03-17 04:30:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 04:30:32,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 302 [2025-03-17 04:30:32,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:32,744 INFO L225 Difference]: With dead ends: 1065 [2025-03-17 04:30:32,744 INFO L226 Difference]: Without dead ends: 716 [2025-03-17 04:30:32,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-17 04:30:32,747 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 431 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:32,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1039 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 04:30:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2025-03-17 04:30:32,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 462. [2025-03-17 04:30:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 323 states have (on average 1.414860681114551) internal successors, (457), 323 states have internal predecessors, (457), 135 states have call successors, (135), 3 states have call predecessors, (135), 3 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2025-03-17 04:30:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 727 transitions. [2025-03-17 04:30:32,823 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 727 transitions. Word has length 302 [2025-03-17 04:30:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:32,825 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 727 transitions. [2025-03-17 04:30:32,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:32,825 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 727 transitions. [2025-03-17 04:30:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-17 04:30:32,829 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:32,829 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:32,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 04:30:32,830 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:32,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:32,831 INFO L85 PathProgramCache]: Analyzing trace with hash 984440867, now seen corresponding path program 1 times [2025-03-17 04:30:32,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:32,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667629334] [2025-03-17 04:30:32,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:32,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:32,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:30:33,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:30:33,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:33,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:30:33,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:33,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667629334] [2025-03-17 04:30:33,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667629334] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:30:33,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608068732] [2025-03-17 04:30:33,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:33,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:30:33,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:30:33,761 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) [2025-03-17 04:30:33,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 04:30:33,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-17 04:30:33,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-17 04:30:33,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:33,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:33,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 04:30:33,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:30:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1994 proven. 57 refuted. 0 times theorem prover too weak. 1909 trivial. 0 not checked. [2025-03-17 04:30:34,287 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:30:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 75 proven. 57 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:30:34,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608068732] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:30:34,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:30:34,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2025-03-17 04:30:34,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283155452] [2025-03-17 04:30:34,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:30:34,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 04:30:34,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:34,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 04:30:34,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-03-17 04:30:34,647 INFO L87 Difference]: Start difference. First operand 462 states and 727 transitions. Second operand has 12 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 4 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (110), 4 states have call predecessors, (110), 4 states have call successors, (110) [2025-03-17 04:30:36,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:36,272 INFO L93 Difference]: Finished difference Result 1530 states and 2315 transitions. [2025-03-17 04:30:36,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-03-17 04:30:36,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 4 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (110), 4 states have call predecessors, (110), 4 states have call successors, (110) Word has length 302 [2025-03-17 04:30:36,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:36,278 INFO L225 Difference]: With dead ends: 1530 [2025-03-17 04:30:36,278 INFO L226 Difference]: Without dead ends: 1167 [2025-03-17 04:30:36,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 599 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=639, Invalid=2117, Unknown=0, NotChecked=0, Total=2756 [2025-03-17 04:30:36,281 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 1884 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:36,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 763 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 04:30:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2025-03-17 04:30:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 715. [2025-03-17 04:30:36,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 538 states have (on average 1.379182156133829) internal successors, (742), 539 states have internal predecessors, (742), 159 states have call successors, (159), 17 states have call predecessors, (159), 17 states have return successors, (159), 158 states have call predecessors, (159), 159 states have call successors, (159) [2025-03-17 04:30:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1060 transitions. [2025-03-17 04:30:36,331 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1060 transitions. Word has length 302 [2025-03-17 04:30:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:36,332 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1060 transitions. [2025-03-17 04:30:36,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 4 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (110), 4 states have call predecessors, (110), 4 states have call successors, (110) [2025-03-17 04:30:36,332 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1060 transitions. [2025-03-17 04:30:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2025-03-17 04:30:36,334 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:36,334 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:36,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 04:30:36,534 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,SelfDestructingSolverStorable5 [2025-03-17 04:30:36,535 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:36,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:36,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2067863639, now seen corresponding path program 1 times [2025-03-17 04:30:36,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:36,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163713725] [2025-03-17 04:30:36,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:36,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:36,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-03-17 04:30:36,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-03-17 04:30:36,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:36,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:30:37,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:37,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163713725] [2025-03-17 04:30:37,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163713725] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:30:37,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:30:37,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 04:30:37,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023599475] [2025-03-17 04:30:37,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:30:37,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 04:30:37,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:37,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 04:30:37,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:30:37,593 INFO L87 Difference]: Start difference. First operand 715 states and 1060 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:38,341 INFO L93 Difference]: Finished difference Result 1797 states and 2641 transitions. [2025-03-17 04:30:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 04:30:38,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 303 [2025-03-17 04:30:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:38,354 INFO L225 Difference]: With dead ends: 1797 [2025-03-17 04:30:38,354 INFO L226 Difference]: Without dead ends: 1211 [2025-03-17 04:30:38,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-17 04:30:38,357 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 432 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:38,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1165 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 04:30:38,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2025-03-17 04:30:38,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 749. [2025-03-17 04:30:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 572 states have (on average 1.3881118881118881) internal successors, (794), 573 states have internal predecessors, (794), 159 states have call successors, (159), 17 states have call predecessors, (159), 17 states have return successors, (159), 158 states have call predecessors, (159), 159 states have call successors, (159) [2025-03-17 04:30:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1112 transitions. [2025-03-17 04:30:38,425 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1112 transitions. Word has length 303 [2025-03-17 04:30:38,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:38,426 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1112 transitions. [2025-03-17 04:30:38,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:38,427 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1112 transitions. [2025-03-17 04:30:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2025-03-17 04:30:38,431 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:38,431 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:38,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 04:30:38,431 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:38,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash 43426730, now seen corresponding path program 1 times [2025-03-17 04:30:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:38,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328455585] [2025-03-17 04:30:38,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:38,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:38,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-03-17 04:30:38,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-03-17 04:30:38,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:38,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 33 proven. 99 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:30:38,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:38,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328455585] [2025-03-17 04:30:38,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328455585] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:30:38,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250788037] [2025-03-17 04:30:38,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:38,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:30:38,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:30:38,986 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) [2025-03-17 04:30:38,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 04:30:39,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-03-17 04:30:39,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-03-17 04:30:39,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:39,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:39,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 04:30:39,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:30:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1518 proven. 99 refuted. 0 times theorem prover too weak. 2343 trivial. 0 not checked. [2025-03-17 04:30:39,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:30:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 33 proven. 99 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:30:39,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250788037] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:30:39,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:30:39,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-03-17 04:30:39,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653092427] [2025-03-17 04:30:39,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:30:39,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 04:30:39,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:39,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 04:30:39,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 04:30:39,859 INFO L87 Difference]: Start difference. First operand 749 states and 1112 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 3 states have call predecessors, (112), 3 states have call successors, (112) [2025-03-17 04:30:40,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:40,360 INFO L93 Difference]: Finished difference Result 1429 states and 2101 transitions. [2025-03-17 04:30:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 04:30:40,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 3 states have call predecessors, (112), 3 states have call successors, (112) Word has length 303 [2025-03-17 04:30:40,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:40,367 INFO L225 Difference]: With dead ends: 1429 [2025-03-17 04:30:40,367 INFO L226 Difference]: Without dead ends: 791 [2025-03-17 04:30:40,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2025-03-17 04:30:40,369 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 387 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:40,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 484 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 04:30:40,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2025-03-17 04:30:40,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 765. [2025-03-17 04:30:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 584 states have (on average 1.3732876712328768) internal successors, (802), 585 states have internal predecessors, (802), 159 states have call successors, (159), 21 states have call predecessors, (159), 21 states have return successors, (159), 158 states have call predecessors, (159), 159 states have call successors, (159) [2025-03-17 04:30:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1120 transitions. [2025-03-17 04:30:40,423 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1120 transitions. Word has length 303 [2025-03-17 04:30:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:40,424 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 1120 transitions. [2025-03-17 04:30:40,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 3 states have call predecessors, (112), 3 states have call successors, (112) [2025-03-17 04:30:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1120 transitions. [2025-03-17 04:30:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2025-03-17 04:30:40,427 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:40,427 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:40,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 04:30:40,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:30:40,628 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:40,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:40,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1676230729, now seen corresponding path program 1 times [2025-03-17 04:30:40,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:40,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741166687] [2025-03-17 04:30:40,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:40,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:40,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-03-17 04:30:40,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-03-17 04:30:40,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:40,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:30:41,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:41,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741166687] [2025-03-17 04:30:41,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741166687] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:30:41,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:30:41,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:30:41,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79225142] [2025-03-17 04:30:41,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:30:41,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:30:41,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:41,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:30:41,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:30:41,093 INFO L87 Difference]: Start difference. First operand 765 states and 1120 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:41,424 INFO L93 Difference]: Finished difference Result 1522 states and 2226 transitions. [2025-03-17 04:30:41,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:30:41,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 303 [2025-03-17 04:30:41,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:41,430 INFO L225 Difference]: With dead ends: 1522 [2025-03-17 04:30:41,430 INFO L226 Difference]: Without dead ends: 873 [2025-03-17 04:30:41,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 04:30:41,434 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 285 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:41,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 884 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:30:41,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2025-03-17 04:30:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 741. [2025-03-17 04:30:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 559 states have (on average 1.3613595706618962) internal successors, (761), 560 states have internal predecessors, (761), 159 states have call successors, (159), 22 states have call predecessors, (159), 22 states have return successors, (159), 158 states have call predecessors, (159), 159 states have call successors, (159) [2025-03-17 04:30:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1079 transitions. [2025-03-17 04:30:41,481 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1079 transitions. Word has length 303 [2025-03-17 04:30:41,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:41,481 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 1079 transitions. [2025-03-17 04:30:41,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:41,481 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1079 transitions. [2025-03-17 04:30:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2025-03-17 04:30:41,483 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:41,483 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:41,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 04:30:41,483 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:41,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:41,483 INFO L85 PathProgramCache]: Analyzing trace with hash 761232009, now seen corresponding path program 1 times [2025-03-17 04:30:41,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:41,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064614697] [2025-03-17 04:30:41,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:41,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:41,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-03-17 04:30:41,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-03-17 04:30:41,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:41,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:30:46,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:46,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064614697] [2025-03-17 04:30:46,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064614697] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:30:46,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:30:46,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 04:30:46,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669265510] [2025-03-17 04:30:46,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:30:46,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 04:30:46,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:46,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 04:30:46,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-17 04:30:46,840 INFO L87 Difference]: Start difference. First operand 741 states and 1079 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-17 04:30:49,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:49,493 INFO L93 Difference]: Finished difference Result 2897 states and 4220 transitions. [2025-03-17 04:30:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 04:30:49,494 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 303 [2025-03-17 04:30:49,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:49,503 INFO L225 Difference]: With dead ends: 2897 [2025-03-17 04:30:49,503 INFO L226 Difference]: Without dead ends: 2276 [2025-03-17 04:30:49,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2025-03-17 04:30:49,505 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 901 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:49,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 1244 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 04:30:49,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2025-03-17 04:30:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 1875. [2025-03-17 04:30:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1546 states have (on average 1.4204398447606728) internal successors, (2196), 1551 states have internal predecessors, (2196), 285 states have call successors, (285), 43 states have call predecessors, (285), 43 states have return successors, (285), 280 states have call predecessors, (285), 285 states have call successors, (285) [2025-03-17 04:30:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2766 transitions. [2025-03-17 04:30:49,615 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2766 transitions. Word has length 303 [2025-03-17 04:30:49,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:49,617 INFO L471 AbstractCegarLoop]: Abstraction has 1875 states and 2766 transitions. [2025-03-17 04:30:49,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-17 04:30:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2766 transitions. [2025-03-17 04:30:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2025-03-17 04:30:49,619 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:49,620 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:49,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 04:30:49,620 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:49,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:49,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2005996490, now seen corresponding path program 1 times [2025-03-17 04:30:49,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:49,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016959009] [2025-03-17 04:30:49,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:49,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:49,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-03-17 04:30:49,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-03-17 04:30:49,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:49,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:30:50,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:50,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016959009] [2025-03-17 04:30:50,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016959009] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:30:50,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:30:50,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 04:30:50,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669819095] [2025-03-17 04:30:50,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:30:50,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 04:30:50,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:50,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 04:30:50,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:30:50,112 INFO L87 Difference]: Start difference. First operand 1875 states and 2766 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:50,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:50,722 INFO L93 Difference]: Finished difference Result 6114 states and 9024 transitions. [2025-03-17 04:30:50,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 04:30:50,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 303 [2025-03-17 04:30:50,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:50,743 INFO L225 Difference]: With dead ends: 6114 [2025-03-17 04:30:50,743 INFO L226 Difference]: Without dead ends: 4367 [2025-03-17 04:30:50,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-17 04:30:50,750 INFO L435 NwaCegarLoop]: 310 mSDtfsCounter, 450 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:50,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1125 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:30:50,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4367 states. [2025-03-17 04:30:50,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4367 to 3303. [2025-03-17 04:30:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 2692 states have (on average 1.4030460624071321) internal successors, (3777), 2702 states have internal predecessors, (3777), 525 states have call successors, (525), 85 states have call predecessors, (525), 85 states have return successors, (525), 515 states have call predecessors, (525), 525 states have call successors, (525) [2025-03-17 04:30:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 4827 transitions. [2025-03-17 04:30:50,983 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 4827 transitions. Word has length 303 [2025-03-17 04:30:50,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:50,984 INFO L471 AbstractCegarLoop]: Abstraction has 3303 states and 4827 transitions. [2025-03-17 04:30:50,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:50,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 4827 transitions. [2025-03-17 04:30:50,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2025-03-17 04:30:50,986 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:50,986 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:50,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 04:30:50,987 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:50,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:50,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1015968554, now seen corresponding path program 1 times [2025-03-17 04:30:50,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:50,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256832712] [2025-03-17 04:30:50,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:50,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:51,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-03-17 04:30:51,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-03-17 04:30:51,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:51,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 6 proven. 126 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:30:51,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:51,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256832712] [2025-03-17 04:30:51,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256832712] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:30:51,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616469563] [2025-03-17 04:30:51,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:51,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:30:51,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:30:51,571 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:30:51,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 04:30:51,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 303 statements into 1 equivalence classes. [2025-03-17 04:30:51,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 303 of 303 statements. [2025-03-17 04:30:51,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:51,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:51,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 04:30:51,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:30:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1892 proven. 48 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2025-03-17 04:30:51,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:30:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 84 proven. 48 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:30:52,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616469563] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:30:52,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:30:52,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2025-03-17 04:30:52,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636361706] [2025-03-17 04:30:52,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:30:52,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 04:30:52,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:52,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 04:30:52,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-17 04:30:52,066 INFO L87 Difference]: Start difference. First operand 3303 states and 4827 transitions. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 4 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 4 states have call predecessors, (107), 4 states have call successors, (107) [2025-03-17 04:30:52,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:52,695 INFO L93 Difference]: Finished difference Result 6668 states and 9648 transitions. [2025-03-17 04:30:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 04:30:52,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 4 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 4 states have call predecessors, (107), 4 states have call successors, (107) Word has length 303 [2025-03-17 04:30:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:52,711 INFO L225 Difference]: With dead ends: 6668 [2025-03-17 04:30:52,711 INFO L226 Difference]: Without dead ends: 3471 [2025-03-17 04:30:52,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 604 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2025-03-17 04:30:52,727 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 418 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:52,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 432 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:30:52,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3471 states. [2025-03-17 04:30:53,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3471 to 3379. [2025-03-17 04:30:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3379 states, 2740 states have (on average 1.3697080291970802) internal successors, (3753), 2750 states have internal predecessors, (3753), 525 states have call successors, (525), 113 states have call predecessors, (525), 113 states have return successors, (525), 515 states have call predecessors, (525), 525 states have call successors, (525) [2025-03-17 04:30:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 4803 transitions. [2025-03-17 04:30:53,038 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 4803 transitions. Word has length 303 [2025-03-17 04:30:53,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:53,040 INFO L471 AbstractCegarLoop]: Abstraction has 3379 states and 4803 transitions. [2025-03-17 04:30:53,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 4 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 4 states have call predecessors, (107), 4 states have call successors, (107) [2025-03-17 04:30:53,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 4803 transitions. [2025-03-17 04:30:53,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2025-03-17 04:30:53,042 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:53,042 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:53,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 04:30:53,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:30:53,243 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:53,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:53,244 INFO L85 PathProgramCache]: Analyzing trace with hash 777916582, now seen corresponding path program 1 times [2025-03-17 04:30:53,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:53,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665253055] [2025-03-17 04:30:53,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:53,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:53,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 305 statements into 1 equivalence classes. [2025-03-17 04:30:53,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 305 of 305 statements. [2025-03-17 04:30:53,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:53,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:30:53,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:53,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665253055] [2025-03-17 04:30:53,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665253055] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:30:53,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:30:53,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:30:53,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906126354] [2025-03-17 04:30:53,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:30:53,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:30:53,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:53,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:30:53,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:30:53,487 INFO L87 Difference]: Start difference. First operand 3379 states and 4803 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:53,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:53,949 INFO L93 Difference]: Finished difference Result 7471 states and 10674 transitions. [2025-03-17 04:30:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:30:53,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 305 [2025-03-17 04:30:53,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:53,970 INFO L225 Difference]: With dead ends: 7471 [2025-03-17 04:30:53,970 INFO L226 Difference]: Without dead ends: 4206 [2025-03-17 04:30:53,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-17 04:30:53,979 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 271 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:53,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 934 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:30:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2025-03-17 04:30:54,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 3379. [2025-03-17 04:30:54,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3379 states, 2740 states have (on average 1.3678832116788322) internal successors, (3748), 2750 states have internal predecessors, (3748), 525 states have call successors, (525), 113 states have call predecessors, (525), 113 states have return successors, (525), 515 states have call predecessors, (525), 525 states have call successors, (525) [2025-03-17 04:30:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 4798 transitions. [2025-03-17 04:30:54,279 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 4798 transitions. Word has length 305 [2025-03-17 04:30:54,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:54,280 INFO L471 AbstractCegarLoop]: Abstraction has 3379 states and 4798 transitions. [2025-03-17 04:30:54,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:54,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 4798 transitions. [2025-03-17 04:30:54,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2025-03-17 04:30:54,287 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:54,287 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:54,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 04:30:54,288 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:54,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1747497605, now seen corresponding path program 1 times [2025-03-17 04:30:54,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:54,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244087850] [2025-03-17 04:30:54,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:54,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:54,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 305 statements into 1 equivalence classes. [2025-03-17 04:30:54,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 305 of 305 statements. [2025-03-17 04:30:54,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:54,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:30:56,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:56,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244087850] [2025-03-17 04:30:56,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244087850] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:30:56,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:30:56,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 04:30:56,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069598600] [2025-03-17 04:30:56,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:30:56,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 04:30:56,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:56,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 04:30:56,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 04:30:56,079 INFO L87 Difference]: Start difference. First operand 3379 states and 4798 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:56,897 INFO L93 Difference]: Finished difference Result 6838 states and 9733 transitions. [2025-03-17 04:30:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 04:30:56,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 305 [2025-03-17 04:30:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:56,924 INFO L225 Difference]: With dead ends: 6838 [2025-03-17 04:30:56,924 INFO L226 Difference]: Without dead ends: 5054 [2025-03-17 04:30:56,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-03-17 04:30:56,929 INFO L435 NwaCegarLoop]: 339 mSDtfsCounter, 434 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:56,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1437 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 04:30:56,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5054 states. [2025-03-17 04:30:57,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5054 to 3407. [2025-03-17 04:30:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 2768 states have (on average 1.36885838150289) internal successors, (3789), 2778 states have internal predecessors, (3789), 525 states have call successors, (525), 113 states have call predecessors, (525), 113 states have return successors, (525), 515 states have call predecessors, (525), 525 states have call successors, (525) [2025-03-17 04:30:57,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 4839 transitions. [2025-03-17 04:30:57,194 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 4839 transitions. Word has length 305 [2025-03-17 04:30:57,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:57,195 INFO L471 AbstractCegarLoop]: Abstraction has 3407 states and 4839 transitions. [2025-03-17 04:30:57,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:30:57,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 4839 transitions. [2025-03-17 04:30:57,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2025-03-17 04:30:57,197 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:57,197 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:57,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 04:30:57,197 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:30:57,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:30:57,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1485211218, now seen corresponding path program 1 times [2025-03-17 04:30:57,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:30:57,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779514801] [2025-03-17 04:30:57,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:57,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:30:57,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-03-17 04:30:57,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-03-17 04:30:57,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:57,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 81 proven. 51 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:30:57,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:30:57,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779514801] [2025-03-17 04:30:57,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779514801] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:30:57,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461633831] [2025-03-17 04:30:57,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:30:57,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:30:57,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:30:57,813 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:30:57,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 04:30:57,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-03-17 04:30:58,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-03-17 04:30:58,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:30:58,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:30:58,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 04:30:58,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:30:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1934 proven. 51 refuted. 0 times theorem prover too weak. 1975 trivial. 0 not checked. [2025-03-17 04:30:58,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:30:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 81 proven. 51 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:30:58,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461633831] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:30:58,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:30:58,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 16 [2025-03-17 04:30:58,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292483370] [2025-03-17 04:30:58,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:30:58,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 04:30:58,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:30:58,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 04:30:58,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2025-03-17 04:30:58,805 INFO L87 Difference]: Start difference. First operand 3407 states and 4839 transitions. Second operand has 16 states, 16 states have (on average 10.0) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (107), 3 states have call predecessors, (107), 6 states have return successors, (108), 5 states have call predecessors, (108), 5 states have call successors, (108) [2025-03-17 04:30:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:30:59,673 INFO L93 Difference]: Finished difference Result 7277 states and 10240 transitions. [2025-03-17 04:30:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-17 04:30:59,675 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.0) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (107), 3 states have call predecessors, (107), 6 states have return successors, (108), 5 states have call predecessors, (108), 5 states have call successors, (108) Word has length 306 [2025-03-17 04:30:59,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:30:59,688 INFO L225 Difference]: With dead ends: 7277 [2025-03-17 04:30:59,689 INFO L226 Difference]: Without dead ends: 3992 [2025-03-17 04:30:59,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2025-03-17 04:30:59,695 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 523 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 04:30:59,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1435 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 04:30:59,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2025-03-17 04:30:59,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3389. [2025-03-17 04:30:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3389 states, 2741 states have (on average 1.3319956220357534) internal successors, (3651), 2751 states have internal predecessors, (3651), 525 states have call successors, (525), 122 states have call predecessors, (525), 122 states have return successors, (525), 515 states have call predecessors, (525), 525 states have call successors, (525) [2025-03-17 04:30:59,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 4701 transitions. [2025-03-17 04:30:59,972 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 4701 transitions. Word has length 306 [2025-03-17 04:30:59,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:30:59,974 INFO L471 AbstractCegarLoop]: Abstraction has 3389 states and 4701 transitions. [2025-03-17 04:30:59,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.0) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (107), 3 states have call predecessors, (107), 6 states have return successors, (108), 5 states have call predecessors, (108), 5 states have call successors, (108) [2025-03-17 04:30:59,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 4701 transitions. [2025-03-17 04:30:59,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-03-17 04:30:59,976 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:30:59,977 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:30:59,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 04:31:00,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 04:31:00,178 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:31:00,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:31:00,178 INFO L85 PathProgramCache]: Analyzing trace with hash 983513216, now seen corresponding path program 1 times [2025-03-17 04:31:00,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:31:00,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328632723] [2025-03-17 04:31:00,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:31:00,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:31:00,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-17 04:31:00,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-17 04:31:00,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:31:00,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:31:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:31:03,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:31:03,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328632723] [2025-03-17 04:31:03,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328632723] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:31:03,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:31:03,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 04:31:03,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832209351] [2025-03-17 04:31:03,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:31:03,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 04:31:03,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:31:03,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 04:31:03,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-03-17 04:31:03,768 INFO L87 Difference]: Start difference. First operand 3389 states and 4701 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 3 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2025-03-17 04:31:07,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:31:07,950 INFO L93 Difference]: Finished difference Result 8603 states and 11966 transitions. [2025-03-17 04:31:07,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 04:31:07,951 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 3 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 307 [2025-03-17 04:31:07,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:31:07,967 INFO L225 Difference]: With dead ends: 8603 [2025-03-17 04:31:07,967 INFO L226 Difference]: Without dead ends: 5364 [2025-03-17 04:31:07,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2025-03-17 04:31:07,974 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 1547 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:31:07,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 1593 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-17 04:31:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2025-03-17 04:31:08,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 3387. [2025-03-17 04:31:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 2774 states have (on average 1.3493150684931507) internal successors, (3743), 2778 states have internal predecessors, (3743), 501 states have call successors, (501), 111 states have call predecessors, (501), 111 states have return successors, (501), 497 states have call predecessors, (501), 501 states have call successors, (501) [2025-03-17 04:31:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 4745 transitions. [2025-03-17 04:31:08,247 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 4745 transitions. Word has length 307 [2025-03-17 04:31:08,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:31:08,248 INFO L471 AbstractCegarLoop]: Abstraction has 3387 states and 4745 transitions. [2025-03-17 04:31:08,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 3 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2025-03-17 04:31:08,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 4745 transitions. [2025-03-17 04:31:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-03-17 04:31:08,250 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:31:08,250 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:31:08,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 04:31:08,250 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:31:08,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:31:08,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1958144383, now seen corresponding path program 1 times [2025-03-17 04:31:08,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:31:08,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895963950] [2025-03-17 04:31:08,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:31:08,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:31:08,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-17 04:31:08,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-17 04:31:08,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:31:08,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:31:09,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 27 proven. 105 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:31:09,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:31:09,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895963950] [2025-03-17 04:31:09,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895963950] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:31:09,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824421240] [2025-03-17 04:31:09,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:31:09,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:31:09,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:31:09,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:31:09,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 04:31:09,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-17 04:31:09,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-17 04:31:09,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:31:09,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:31:09,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-17 04:31:09,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:31:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1359 proven. 204 refuted. 0 times theorem prover too weak. 2397 trivial. 0 not checked. [2025-03-17 04:31:11,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:31:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 54 proven. 207 refuted. 0 times theorem prover too weak. 3699 trivial. 0 not checked. [2025-03-17 04:31:11,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824421240] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:31:11,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:31:11,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 28 [2025-03-17 04:31:11,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975177270] [2025-03-17 04:31:11,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:31:11,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 04:31:11,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:31:11,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 04:31:11,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2025-03-17 04:31:11,790 INFO L87 Difference]: Start difference. First operand 3387 states and 4745 transitions. Second operand has 28 states, 27 states have (on average 8.518518518518519) internal successors, (230), 26 states have internal predecessors, (230), 9 states have call successors, (135), 4 states have call predecessors, (135), 8 states have return successors, (135), 9 states have call predecessors, (135), 9 states have call successors, (135) [2025-03-17 04:31:17,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:31:23,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 04:31:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:31:23,721 INFO L93 Difference]: Finished difference Result 11088 states and 15449 transitions. [2025-03-17 04:31:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-17 04:31:23,722 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 8.518518518518519) internal successors, (230), 26 states have internal predecessors, (230), 9 states have call successors, (135), 4 states have call predecessors, (135), 8 states have return successors, (135), 9 states have call predecessors, (135), 9 states have call successors, (135) Word has length 307 [2025-03-17 04:31:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:31:23,742 INFO L225 Difference]: With dead ends: 11088 [2025-03-17 04:31:23,743 INFO L226 Difference]: Without dead ends: 7855 [2025-03-17 04:31:23,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=619, Invalid=2033, Unknown=0, NotChecked=0, Total=2652 [2025-03-17 04:31:23,750 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 1903 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 334 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2025-03-17 04:31:23,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1931 Valid, 2859 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 2854 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2025-03-17 04:31:23,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2025-03-17 04:31:24,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 5235. [2025-03-17 04:31:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 4261 states have (on average 1.3285613705702886) internal successors, (5661), 4273 states have internal predecessors, (5661), 783 states have call successors, (783), 190 states have call predecessors, (783), 190 states have return successors, (783), 771 states have call predecessors, (783), 783 states have call successors, (783) [2025-03-17 04:31:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 7227 transitions. [2025-03-17 04:31:24,215 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 7227 transitions. Word has length 307 [2025-03-17 04:31:24,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:31:24,216 INFO L471 AbstractCegarLoop]: Abstraction has 5235 states and 7227 transitions. [2025-03-17 04:31:24,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 8.518518518518519) internal successors, (230), 26 states have internal predecessors, (230), 9 states have call successors, (135), 4 states have call predecessors, (135), 8 states have return successors, (135), 9 states have call predecessors, (135), 9 states have call successors, (135) [2025-03-17 04:31:24,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 7227 transitions. [2025-03-17 04:31:24,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-03-17 04:31:24,218 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:31:24,219 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:31:24,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 04:31:24,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-17 04:31:24,419 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:31:24,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:31:24,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1746793470, now seen corresponding path program 1 times [2025-03-17 04:31:24,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:31:24,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481938882] [2025-03-17 04:31:24,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:31:24,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:31:24,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-17 04:31:24,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-17 04:31:24,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:31:24,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:31:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 12 proven. 246 refuted. 0 times theorem prover too weak. 3702 trivial. 0 not checked. [2025-03-17 04:31:25,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:31:25,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481938882] [2025-03-17 04:31:25,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481938882] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:31:25,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439439593] [2025-03-17 04:31:25,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:31:25,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:31:25,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:31:25,642 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:31:25,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 04:31:25,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-17 04:31:25,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-17 04:31:25,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:31:25,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:31:25,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-17 04:31:25,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:31:31,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2087 proven. 510 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2025-03-17 04:31:31,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:31:42,900 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)