./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/theatreSquare.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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/loops-crafted-1/theatreSquare.c -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 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:52:48,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:52:48,405 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:52:48,410 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:52:48,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:52:48,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:52:48,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:52:48,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:52:48,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:52:48,458 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:52:48,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:52:48,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:52:48,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:52:48,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:52:48,461 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:52:48,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:52:48,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:52:48,462 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:52:48,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:52:48,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:52:48,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:52:48,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:52:48,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:52:48,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:52:48,466 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:52:48,467 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:52:48,467 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:52:48,467 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:52:48,467 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:52:48,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:52:48,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:52:48,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:52:48,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:52:48,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:52:48,468 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:52:48,468 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:52:48,468 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:52:48,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:52:48,468 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:52:48,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:52:48,469 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:52:48,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:52:48,470 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 [2024-11-16 06:52:48,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:52:48,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:52:48,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:52:48,750 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:52:48,751 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:52:48,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2024-11-16 06:52:50,153 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:52:50,337 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:52:50,338 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2024-11-16 06:52:50,346 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e0eb2cad/e7117bf28dd94b2c87e5c0e129ea2c15/FLAG1df0bd725 [2024-11-16 06:52:50,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e0eb2cad/e7117bf28dd94b2c87e5c0e129ea2c15 [2024-11-16 06:52:50,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:52:50,358 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:52:50,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:52:50,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:52:50,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:52:50,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a22388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50, skipping insertion in model container [2024-11-16 06:52:50,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,391 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:52:50,496 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/loops-crafted-1/theatreSquare.c[370,383] [2024-11-16 06:52:50,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:52:50,525 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:52:50,533 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/loops-crafted-1/theatreSquare.c[370,383] [2024-11-16 06:52:50,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:52:50,553 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:52:50,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50 WrapperNode [2024-11-16 06:52:50,554 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:52:50,555 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:52:50,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:52:50,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:52:50,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,583 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2024-11-16 06:52:50,585 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:52:50,586 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:52:50,586 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:52:50,586 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:52:50,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,600 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,617 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]. [2024-11-16 06:52:50,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,627 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,630 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:52:50,630 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:52:50,630 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:52:50,630 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:52:50,631 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (1/1) ... [2024-11-16 06:52:50,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:52:50,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:50,669 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) [2024-11-16 06:52:50,673 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 [2024-11-16 06:52:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:52:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:52:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:52:50,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:52:50,768 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:52:50,771 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:52:50,964 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-16 06:52:50,965 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:52:50,982 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:52:50,986 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:52:50,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:52:50 BoogieIcfgContainer [2024-11-16 06:52:50,987 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:52:50,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:52:50,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:52:50,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:52:50,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:52:50" (1/3) ... [2024-11-16 06:52:50,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab2ee6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:52:50, skipping insertion in model container [2024-11-16 06:52:50,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:50" (2/3) ... [2024-11-16 06:52:50,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab2ee6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:52:50, skipping insertion in model container [2024-11-16 06:52:50,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:52:50" (3/3) ... [2024-11-16 06:52:50,998 INFO L112 eAbstractionObserver]: Analyzing ICFG theatreSquare.c [2024-11-16 06:52:51,030 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:52:51,033 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:52:51,084 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:52:51,091 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;@3528f38b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:52:51,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:52:51,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:51,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-16 06:52:51,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:51,098 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:51,098 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:51,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash -932666411, now seen corresponding path program 1 times [2024-11-16 06:52:51,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:51,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124610836] [2024-11-16 06:52:51,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:51,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:51,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:51,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124610836] [2024-11-16 06:52:51,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124610836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:51,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:51,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 06:52:51,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46284614] [2024-11-16 06:52:51,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:51,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:52:51,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:52:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:52:51,289 INFO L87 Difference]: Start difference. First operand has 31 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:51,314 INFO L93 Difference]: Finished difference Result 58 states and 82 transitions. [2024-11-16 06:52:51,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:52:51,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-16 06:52:51,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:51,326 INFO L225 Difference]: With dead ends: 58 [2024-11-16 06:52:51,326 INFO L226 Difference]: Without dead ends: 26 [2024-11-16 06:52:51,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:52:51,330 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:51,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 83 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-16 06:52:51,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-16 06:52:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2024-11-16 06:52:51,372 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 7 [2024-11-16 06:52:51,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:51,372 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2024-11-16 06:52:51,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:51,372 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2024-11-16 06:52:51,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-16 06:52:51,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:51,373 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:51,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:52:51,373 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:51,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:51,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1642768094, now seen corresponding path program 1 times [2024-11-16 06:52:51,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:51,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329188935] [2024-11-16 06:52:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:51,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:51,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:51,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329188935] [2024-11-16 06:52:51,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329188935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:51,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:51,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 06:52:51,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649051313] [2024-11-16 06:52:51,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:51,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 06:52:51,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:51,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 06:52:51,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-16 06:52:51,792 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:51,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:51,878 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-11-16 06:52:51,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 06:52:51,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-16 06:52:51,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:51,879 INFO L225 Difference]: With dead ends: 49 [2024-11-16 06:52:51,879 INFO L226 Difference]: Without dead ends: 42 [2024-11-16 06:52:51,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:52:51,880 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 29 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:51,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 176 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:51,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-16 06:52:51,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2024-11-16 06:52:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-11-16 06:52:51,886 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 25 [2024-11-16 06:52:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:51,886 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-11-16 06:52:51,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-11-16 06:52:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 06:52:51,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:51,887 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:51,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:52:51,887 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:51,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:51,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1699854179, now seen corresponding path program 1 times [2024-11-16 06:52:51,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:51,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145339281] [2024-11-16 06:52:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:51,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:51,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:51,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145339281] [2024-11-16 06:52:51,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145339281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:51,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:51,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 06:52:51,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810061822] [2024-11-16 06:52:51,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:51,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:52:51,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:51,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:52:51,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:52:51,937 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:51,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:51,947 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2024-11-16 06:52:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:52:51,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-16 06:52:51,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:51,949 INFO L225 Difference]: With dead ends: 60 [2024-11-16 06:52:51,949 INFO L226 Difference]: Without dead ends: 46 [2024-11-16 06:52:51,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:52:51,950 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:51,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-16 06:52:51,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-16 06:52:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2024-11-16 06:52:51,958 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 27 [2024-11-16 06:52:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:51,958 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2024-11-16 06:52:51,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2024-11-16 06:52:51,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 06:52:51,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:51,959 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:51,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 06:52:51,960 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:51,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:51,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1238632959, now seen corresponding path program 1 times [2024-11-16 06:52:51,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:51,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107654556] [2024-11-16 06:52:51,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:51,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:52,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:52,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107654556] [2024-11-16 06:52:52,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107654556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:52,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:52,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 06:52:52,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139347929] [2024-11-16 06:52:52,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:52,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:52:52,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:52,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:52:52,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:52:52,013 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:52,029 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2024-11-16 06:52:52,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:52:52,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-16 06:52:52,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:52,032 INFO L225 Difference]: With dead ends: 78 [2024-11-16 06:52:52,032 INFO L226 Difference]: Without dead ends: 53 [2024-11-16 06:52:52,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:52:52,033 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:52,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 80 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:52,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-16 06:52:52,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-16 06:52:52,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.25) internal successors, (65), 52 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2024-11-16 06:52:52,042 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 27 [2024-11-16 06:52:52,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:52,042 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2024-11-16 06:52:52,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2024-11-16 06:52:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 06:52:52,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:52,043 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:52,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 06:52:52,043 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:52,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:52,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1619998686, now seen corresponding path program 1 times [2024-11-16 06:52:52,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:52,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902334084] [2024-11-16 06:52:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:52,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:52:52,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:52,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902334084] [2024-11-16 06:52:52,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902334084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:52,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:52,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:52:52,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201363892] [2024-11-16 06:52:52,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:52,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:52:52,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:52,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:52:52,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:52:52,104 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:52,114 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2024-11-16 06:52:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:52:52,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-16 06:52:52,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:52,116 INFO L225 Difference]: With dead ends: 73 [2024-11-16 06:52:52,116 INFO L226 Difference]: Without dead ends: 48 [2024-11-16 06:52:52,116 INFO L431 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 [2024-11-16 06:52:52,117 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:52,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:52,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-16 06:52:52,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-16 06:52:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-16 06:52:52,122 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 29 [2024-11-16 06:52:52,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:52,122 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-16 06:52:52,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,122 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-16 06:52:52,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 06:52:52,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:52,123 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:52,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 06:52:52,123 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:52,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:52,124 INFO L85 PathProgramCache]: Analyzing trace with hash 342536670, now seen corresponding path program 1 times [2024-11-16 06:52:52,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:52,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216863363] [2024-11-16 06:52:52,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:52,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:52:52,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:52,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216863363] [2024-11-16 06:52:52,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216863363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:52,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:52,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:52:52,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193494383] [2024-11-16 06:52:52,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:52,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:52:52,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:52,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:52:52,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:52:52,174 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:52,182 INFO L93 Difference]: Finished difference Result 89 states and 108 transitions. [2024-11-16 06:52:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:52:52,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-16 06:52:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:52,183 INFO L225 Difference]: With dead ends: 89 [2024-11-16 06:52:52,184 INFO L226 Difference]: Without dead ends: 50 [2024-11-16 06:52:52,184 INFO L431 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 [2024-11-16 06:52:52,185 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:52,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:52,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-16 06:52:52,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-16 06:52:52,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-16 06:52:52,189 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 29 [2024-11-16 06:52:52,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:52,189 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-16 06:52:52,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,190 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-16 06:52:52,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-16 06:52:52,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:52,190 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:52,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 06:52:52,191 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:52,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:52,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2059830717, now seen corresponding path program 1 times [2024-11-16 06:52:52,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:52,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32898840] [2024-11-16 06:52:52,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:52,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:52:52,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:52,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32898840] [2024-11-16 06:52:52,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32898840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:52,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:52,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 06:52:52,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517710265] [2024-11-16 06:52:52,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:52,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:52:52,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:52,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:52:52,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:52:52,255 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:52,264 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2024-11-16 06:52:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:52:52,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-16 06:52:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:52,265 INFO L225 Difference]: With dead ends: 57 [2024-11-16 06:52:52,265 INFO L226 Difference]: Without dead ends: 45 [2024-11-16 06:52:52,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:52:52,266 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:52,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-16 06:52:52,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-16 06:52:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-11-16 06:52:52,270 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 31 [2024-11-16 06:52:52,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:52,270 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-11-16 06:52:52,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,270 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-11-16 06:52:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 06:52:52,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:52,271 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:52,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 06:52:52,271 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:52,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:52,272 INFO L85 PathProgramCache]: Analyzing trace with hash 517061660, now seen corresponding path program 1 times [2024-11-16 06:52:52,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:52,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169332454] [2024-11-16 06:52:52,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:52,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:52:52,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:52,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169332454] [2024-11-16 06:52:52,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169332454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:52,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497220920] [2024-11-16 06:52:52,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:52,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:52,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:52,327 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) [2024-11-16 06:52:52,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:52:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:52,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 06:52:52,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:52:52,459 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:52:52,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497220920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:52,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:52:52,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-16 06:52:52,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649064578] [2024-11-16 06:52:52,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:52,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:52:52,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:52,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:52:52,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:52:52,461 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:52,474 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2024-11-16 06:52:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:52:52,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-16 06:52:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:52,475 INFO L225 Difference]: With dead ends: 54 [2024-11-16 06:52:52,475 INFO L226 Difference]: Without dead ends: 34 [2024-11-16 06:52:52,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:52:52,476 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:52,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 94 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:52,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-16 06:52:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-16 06:52:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-16 06:52:52,479 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 33 [2024-11-16 06:52:52,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:52,480 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-16 06:52:52,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,480 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-16 06:52:52,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 06:52:52,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:52,480 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:52,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:52:52,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:52,685 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:52,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:52,685 INFO L85 PathProgramCache]: Analyzing trace with hash -344976002, now seen corresponding path program 1 times [2024-11-16 06:52:52,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:52,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568236222] [2024-11-16 06:52:52,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:52,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:52:52,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:52,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568236222] [2024-11-16 06:52:52,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568236222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:52,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658177559] [2024-11-16 06:52:52,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:52,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:52,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:52,737 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) [2024-11-16 06:52:52,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:52:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:52,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 06:52:52,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:52,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:52:52,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658177559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:52,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:52:52,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-16 06:52:52,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035896228] [2024-11-16 06:52:52,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:52,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:52:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:52:52,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:52:52,836 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:52,844 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2024-11-16 06:52:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:52:52,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-16 06:52:52,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:52,845 INFO L225 Difference]: With dead ends: 46 [2024-11-16 06:52:52,845 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 06:52:52,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:52:52,846 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:52,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:52,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 06:52:52,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-16 06:52:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-16 06:52:52,849 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 33 [2024-11-16 06:52:52,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:52,849 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-16 06:52:52,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-16 06:52:52,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-16 06:52:52,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:52,850 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:52,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 06:52:53,054 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,SelfDestructingSolverStorable8 [2024-11-16 06:52:53,055 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:53,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:53,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1583376703, now seen corresponding path program 1 times [2024-11-16 06:52:53,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:53,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791750683] [2024-11-16 06:52:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:53,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:53,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:53,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:53,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791750683] [2024-11-16 06:52:53,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791750683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:53,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825770592] [2024-11-16 06:52:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:53,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:53,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:53,100 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) [2024-11-16 06:52:53,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:52:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:53,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 06:52:53,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:53,176 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:52:53,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825770592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:53,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:52:53,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-16 06:52:53,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677580894] [2024-11-16 06:52:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:53,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:52:53,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:52:53,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:52:53,177 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:53,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:53,188 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-11-16 06:52:53,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:52:53,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-16 06:52:53,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:53,189 INFO L225 Difference]: With dead ends: 45 [2024-11-16 06:52:53,189 INFO L226 Difference]: Without dead ends: 38 [2024-11-16 06:52:53,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:52:53,189 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:53,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 94 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:53,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-16 06:52:53,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-16 06:52:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-16 06:52:53,192 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 35 [2024-11-16 06:52:53,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:53,193 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-16 06:52:53,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-16 06:52:53,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 06:52:53,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:53,194 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:53,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 06:52:53,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:53,398 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:53,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:53,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1354561214, now seen corresponding path program 1 times [2024-11-16 06:52:53,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:53,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674482246] [2024-11-16 06:52:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:53,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:52:53,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:53,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674482246] [2024-11-16 06:52:53,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674482246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:53,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827159654] [2024-11-16 06:52:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:53,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:53,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:53,614 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) [2024-11-16 06:52:53,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:52:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:53,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 06:52:53,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:52:53,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:52:53,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827159654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:53,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:53,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2024-11-16 06:52:53,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772128401] [2024-11-16 06:52:53,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:53,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 06:52:54,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:54,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 06:52:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2024-11-16 06:52:54,001 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:54,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:54,190 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2024-11-16 06:52:54,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 06:52:54,191 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-16 06:52:54,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:54,191 INFO L225 Difference]: With dead ends: 75 [2024-11-16 06:52:54,191 INFO L226 Difference]: Without dead ends: 68 [2024-11-16 06:52:54,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:52:54,192 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 44 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:54,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 401 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:52:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-16 06:52:54,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2024-11-16 06:52:54,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 57 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2024-11-16 06:52:54,203 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 37 [2024-11-16 06:52:54,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:54,204 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2024-11-16 06:52:54,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2024-11-16 06:52:54,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 06:52:54,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:54,205 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:54,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 06:52:54,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:54,406 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:54,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:54,407 INFO L85 PathProgramCache]: Analyzing trace with hash 506208381, now seen corresponding path program 2 times [2024-11-16 06:52:54,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:54,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026837047] [2024-11-16 06:52:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:54,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:54,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:54,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026837047] [2024-11-16 06:52:54,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026837047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:54,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827079355] [2024-11-16 06:52:54,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:52:54,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:54,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:54,486 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) [2024-11-16 06:52:54,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:52:54,549 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:52:54,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:54,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 06:52:54,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:54,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:54,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827079355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:54,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:54,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 06:52:54,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592964184] [2024-11-16 06:52:54,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:54,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:52:54,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:54,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:52:54,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:52:54,634 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:54,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:54,694 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2024-11-16 06:52:54,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:52:54,697 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 06:52:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:54,698 INFO L225 Difference]: With dead ends: 89 [2024-11-16 06:52:54,698 INFO L226 Difference]: Without dead ends: 75 [2024-11-16 06:52:54,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:52:54,699 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:54,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:52:54,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-16 06:52:54,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-11-16 06:52:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 72 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2024-11-16 06:52:54,704 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 39 [2024-11-16 06:52:54,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:54,705 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2024-11-16 06:52:54,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:54,705 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2024-11-16 06:52:54,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 06:52:54,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:54,705 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:54,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 06:52:54,906 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,SelfDestructingSolverStorable11 [2024-11-16 06:52:54,906 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:54,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:54,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1743487487, now seen corresponding path program 3 times [2024-11-16 06:52:54,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:54,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016565623] [2024-11-16 06:52:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:54,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:55,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:55,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016565623] [2024-11-16 06:52:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016565623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:55,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274271648] [2024-11-16 06:52:55,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:52:55,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:55,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:55,054 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) [2024-11-16 06:52:55,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:52:55,106 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 06:52:55,106 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:55,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 06:52:55,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:55,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:55,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274271648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:55,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:55,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 06:52:55,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163277688] [2024-11-16 06:52:55,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:55,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 06:52:55,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:55,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 06:52:55,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:52:55,324 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:55,386 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2024-11-16 06:52:55,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 06:52:55,387 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 06:52:55,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:55,387 INFO L225 Difference]: With dead ends: 114 [2024-11-16 06:52:55,387 INFO L226 Difference]: Without dead ends: 89 [2024-11-16 06:52:55,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-16 06:52:55,388 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:55,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 166 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:55,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-16 06:52:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-16 06:52:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1590909090909092) internal successors, (102), 88 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2024-11-16 06:52:55,395 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 39 [2024-11-16 06:52:55,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:55,395 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2024-11-16 06:52:55,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,396 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2024-11-16 06:52:55,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 06:52:55,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:55,396 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:55,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 06:52:55,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:55,597 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:55,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:55,598 INFO L85 PathProgramCache]: Analyzing trace with hash -911388321, now seen corresponding path program 4 times [2024-11-16 06:52:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540580204] [2024-11-16 06:52:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:55,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:55,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:55,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540580204] [2024-11-16 06:52:55,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540580204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:55,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077695893] [2024-11-16 06:52:55,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:52:55,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:55,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:55,644 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) [2024-11-16 06:52:55,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 06:52:55,693 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:52:55,693 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:55,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 06:52:55,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:55,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:55,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077695893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:55,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:55,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-16 06:52:55,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107361075] [2024-11-16 06:52:55,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:55,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:52:55,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:52:55,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:52:55,765 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:55,801 INFO L93 Difference]: Finished difference Result 160 states and 186 transitions. [2024-11-16 06:52:55,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:52:55,801 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 06:52:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:55,802 INFO L225 Difference]: With dead ends: 160 [2024-11-16 06:52:55,802 INFO L226 Difference]: Without dead ends: 107 [2024-11-16 06:52:55,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:52:55,802 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:55,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-16 06:52:55,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-16 06:52:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 106 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 123 transitions. [2024-11-16 06:52:55,812 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 123 transitions. Word has length 39 [2024-11-16 06:52:55,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:55,812 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 123 transitions. [2024-11-16 06:52:55,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,813 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 123 transitions. [2024-11-16 06:52:55,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 06:52:55,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:55,813 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:55,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 06:52:56,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:56,014 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:56,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:56,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1154319459, now seen corresponding path program 5 times [2024-11-16 06:52:56,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:56,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395532895] [2024-11-16 06:52:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:56,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:56,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:56,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395532895] [2024-11-16 06:52:56,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395532895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:56,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737407899] [2024-11-16 06:52:56,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:52:56,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:56,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:56,144 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:56,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 06:52:56,235 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-16 06:52:56,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:56,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 06:52:56,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:56,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:56,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737407899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:56,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:56,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-16 06:52:56,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709834795] [2024-11-16 06:52:56,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:56,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 06:52:56,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:56,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 06:52:56,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:52:56,445 INFO L87 Difference]: Start difference. First operand 107 states and 123 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:56,498 INFO L93 Difference]: Finished difference Result 128 states and 146 transitions. [2024-11-16 06:52:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:52:56,498 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 06:52:56,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:56,499 INFO L225 Difference]: With dead ends: 128 [2024-11-16 06:52:56,499 INFO L226 Difference]: Without dead ends: 111 [2024-11-16 06:52:56,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-16 06:52:56,499 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:56,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 205 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:56,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-16 06:52:56,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-16 06:52:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 110 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2024-11-16 06:52:56,506 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 39 [2024-11-16 06:52:56,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:56,506 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2024-11-16 06:52:56,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2024-11-16 06:52:56,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 06:52:56,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:56,508 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:56,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 06:52:56,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 06:52:56,712 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:56,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash -680632514, now seen corresponding path program 6 times [2024-11-16 06:52:56,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:56,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231755125] [2024-11-16 06:52:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:56,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 06:52:56,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:56,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231755125] [2024-11-16 06:52:56,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231755125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:56,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605018646] [2024-11-16 06:52:56,811 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:52:56,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:56,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:56,816 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:56,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 06:52:56,865 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-16 06:52:56,865 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:56,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 06:52:56,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:52:56,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:52:57,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605018646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:57,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:57,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-16 06:52:57,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024083796] [2024-11-16 06:52:57,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:57,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 06:52:57,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:57,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 06:52:57,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:52:57,018 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:57,088 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2024-11-16 06:52:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 06:52:57,088 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 06:52:57,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:57,089 INFO L225 Difference]: With dead ends: 152 [2024-11-16 06:52:57,089 INFO L226 Difference]: Without dead ends: 112 [2024-11-16 06:52:57,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-16 06:52:57,089 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:57,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 227 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:57,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-16 06:52:57,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-16 06:52:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.1441441441441442) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2024-11-16 06:52:57,095 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 41 [2024-11-16 06:52:57,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:57,095 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2024-11-16 06:52:57,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:57,095 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2024-11-16 06:52:57,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 06:52:57,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:57,096 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:57,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 06:52:57,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 06:52:57,301 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:57,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:57,301 INFO L85 PathProgramCache]: Analyzing trace with hash 185813790, now seen corresponding path program 7 times [2024-11-16 06:52:57,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:57,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694025198] [2024-11-16 06:52:57,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:57,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:52:57,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:57,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694025198] [2024-11-16 06:52:57,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694025198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:57,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069404521] [2024-11-16 06:52:57,494 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:52:57,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:57,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:57,496 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:57,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 06:52:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:57,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-16 06:52:57,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:52:57,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:52:57,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069404521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:57,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:57,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 26 [2024-11-16 06:52:57,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998790729] [2024-11-16 06:52:57,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:57,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 06:52:57,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 06:52:57,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2024-11-16 06:52:57,837 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:58,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:58,131 INFO L93 Difference]: Finished difference Result 177 states and 201 transitions. [2024-11-16 06:52:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 06:52:58,134 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 06:52:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:58,135 INFO L225 Difference]: With dead ends: 177 [2024-11-16 06:52:58,135 INFO L226 Difference]: Without dead ends: 165 [2024-11-16 06:52:58,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 06:52:58,136 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 55 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:58,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 626 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:52:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-16 06:52:58,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 148. [2024-11-16 06:52:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.1496598639455782) internal successors, (169), 147 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 169 transitions. [2024-11-16 06:52:58,160 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 169 transitions. Word has length 41 [2024-11-16 06:52:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:58,160 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 169 transitions. [2024-11-16 06:52:58,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:58,160 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 169 transitions. [2024-11-16 06:52:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 06:52:58,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:58,161 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:58,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 06:52:58,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 06:52:58,361 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:58,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:58,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1599855938, now seen corresponding path program 8 times [2024-11-16 06:52:58,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:58,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137198086] [2024-11-16 06:52:58,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:58,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 06:52:58,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:58,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137198086] [2024-11-16 06:52:58,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137198086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125041441] [2024-11-16 06:52:58,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:52:58,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:58,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:58,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:58,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 06:52:58,589 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:52:58,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:58,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 06:52:58,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:52:58,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:52:58,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125041441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:58,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:58,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-11-16 06:52:58,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073310040] [2024-11-16 06:52:58,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:58,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 06:52:58,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:58,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 06:52:58,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-16 06:52:58,814 INFO L87 Difference]: Start difference. First operand 148 states and 169 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:58,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:58,871 INFO L93 Difference]: Finished difference Result 168 states and 189 transitions. [2024-11-16 06:52:58,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:52:58,872 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 06:52:58,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:58,872 INFO L225 Difference]: With dead ends: 168 [2024-11-16 06:52:58,872 INFO L226 Difference]: Without dead ends: 144 [2024-11-16 06:52:58,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:52:58,873 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:58,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 251 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-16 06:52:58,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-16 06:52:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.132867132867133) internal successors, (162), 143 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 162 transitions. [2024-11-16 06:52:58,880 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 162 transitions. Word has length 41 [2024-11-16 06:52:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:58,880 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 162 transitions. [2024-11-16 06:52:58,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:58,880 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 162 transitions. [2024-11-16 06:52:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 06:52:58,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:58,881 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:58,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 06:52:59,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 06:52:59,081 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:59,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:59,082 INFO L85 PathProgramCache]: Analyzing trace with hash -436322721, now seen corresponding path program 9 times [2024-11-16 06:52:59,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:59,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433142845] [2024-11-16 06:52:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:59,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:59,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:59,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433142845] [2024-11-16 06:52:59,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433142845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480263598] [2024-11-16 06:52:59,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:52:59,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:59,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:59,196 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:59,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 06:52:59,245 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 06:52:59,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:59,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 06:52:59,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:59,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:59,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480263598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:59,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:59,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-16 06:52:59,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391026477] [2024-11-16 06:52:59,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:59,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 06:52:59,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:59,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 06:52:59,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-11-16 06:52:59,546 INFO L87 Difference]: Start difference. First operand 144 states and 162 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:59,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:59,659 INFO L93 Difference]: Finished difference Result 185 states and 208 transitions. [2024-11-16 06:52:59,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 06:52:59,659 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-16 06:52:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:59,660 INFO L225 Difference]: With dead ends: 185 [2024-11-16 06:52:59,660 INFO L226 Difference]: Without dead ends: 147 [2024-11-16 06:52:59,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2024-11-16 06:52:59,660 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:59,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 285 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:52:59,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-16 06:52:59,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 139. [2024-11-16 06:52:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.1376811594202898) internal successors, (157), 138 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 157 transitions. [2024-11-16 06:52:59,669 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 157 transitions. Word has length 43 [2024-11-16 06:52:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:59,669 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 157 transitions. [2024-11-16 06:52:59,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:59,669 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 157 transitions. [2024-11-16 06:52:59,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 06:52:59,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:59,670 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:59,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 06:52:59,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:59,870 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:59,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:59,871 INFO L85 PathProgramCache]: Analyzing trace with hash -2089990019, now seen corresponding path program 10 times [2024-11-16 06:52:59,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:59,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957985659] [2024-11-16 06:52:59,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:59,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:52:59,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:59,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957985659] [2024-11-16 06:52:59,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957985659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:59,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321805849] [2024-11-16 06:52:59,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:52:59,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:59,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:59,986 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:59,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 06:53:00,035 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:00,036 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:00,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 06:53:00,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:00,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:00,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321805849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:00,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:00,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2024-11-16 06:53:00,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262393772] [2024-11-16 06:53:00,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:00,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 06:53:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:00,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 06:53:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-11-16 06:53:00,346 INFO L87 Difference]: Start difference. First operand 139 states and 157 transitions. Second operand has 20 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:00,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:00,476 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2024-11-16 06:53:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 06:53:00,477 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-16 06:53:00,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:00,477 INFO L225 Difference]: With dead ends: 160 [2024-11-16 06:53:00,477 INFO L226 Difference]: Without dead ends: 143 [2024-11-16 06:53:00,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-16 06:53:00,478 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:00,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 368 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-16 06:53:00,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-16 06:53:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 142 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:00,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 161 transitions. [2024-11-16 06:53:00,502 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 161 transitions. Word has length 43 [2024-11-16 06:53:00,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:00,502 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 161 transitions. [2024-11-16 06:53:00,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 20 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:00,502 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 161 transitions. [2024-11-16 06:53:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 06:53:00,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:00,503 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:00,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 06:53:00,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-16 06:53:00,706 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:00,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:00,706 INFO L85 PathProgramCache]: Analyzing trace with hash -873048867, now seen corresponding path program 11 times [2024-11-16 06:53:00,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:00,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132773364] [2024-11-16 06:53:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:00,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:53:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:00,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132773364] [2024-11-16 06:53:00,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132773364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:00,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037941021] [2024-11-16 06:53:00,848 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:00,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:00,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:00,850 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:00,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 06:53:00,906 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-16 06:53:00,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:00,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:53:00,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:53:00,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:53:00,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037941021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:00,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:00,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 06:53:00,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201352506] [2024-11-16 06:53:00,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:00,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 06:53:00,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:00,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 06:53:00,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:53:00,975 INFO L87 Difference]: Start difference. First operand 143 states and 161 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:01,006 INFO L93 Difference]: Finished difference Result 173 states and 194 transitions. [2024-11-16 06:53:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:53:01,007 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-16 06:53:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:01,007 INFO L225 Difference]: With dead ends: 173 [2024-11-16 06:53:01,007 INFO L226 Difference]: Without dead ends: 120 [2024-11-16 06:53:01,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-16 06:53:01,008 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:01,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 118 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:53:01,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-16 06:53:01,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-11-16 06:53:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.1260504201680672) internal successors, (134), 119 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2024-11-16 06:53:01,016 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 43 [2024-11-16 06:53:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:01,016 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2024-11-16 06:53:01,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2024-11-16 06:53:01,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 06:53:01,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:01,017 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:01,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 06:53:01,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:01,217 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:01,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:01,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1310596543, now seen corresponding path program 12 times [2024-11-16 06:53:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:01,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914756932] [2024-11-16 06:53:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:01,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:53:01,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:01,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914756932] [2024-11-16 06:53:01,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914756932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:01,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137684112] [2024-11-16 06:53:01,261 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:01,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:01,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:01,263 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:01,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 06:53:01,312 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-16 06:53:01,312 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:01,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:53:01,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:53:01,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:53:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137684112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:01,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:01,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 06:53:01,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055212974] [2024-11-16 06:53:01,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:01,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 06:53:01,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 06:53:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:53:01,382 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:01,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:01,415 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2024-11-16 06:53:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:53:01,415 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-16 06:53:01,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:01,416 INFO L225 Difference]: With dead ends: 129 [2024-11-16 06:53:01,416 INFO L226 Difference]: Without dead ends: 122 [2024-11-16 06:53:01,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-16 06:53:01,416 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:01,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 165 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:53:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-16 06:53:01,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-16 06:53:01,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.1239669421487604) internal successors, (136), 121 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:01,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2024-11-16 06:53:01,424 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 43 [2024-11-16 06:53:01,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:01,424 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2024-11-16 06:53:01,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2024-11-16 06:53:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-16 06:53:01,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:01,425 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:01,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-16 06:53:01,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:01,625 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:01,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:01,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1345429506, now seen corresponding path program 13 times [2024-11-16 06:53:01,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:01,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138639374] [2024-11-16 06:53:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:01,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:01,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:01,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138639374] [2024-11-16 06:53:01,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138639374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:01,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712483847] [2024-11-16 06:53:01,815 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:01,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:01,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:01,817 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:01,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 06:53:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:01,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 06:53:01,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:02,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:02,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712483847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:02,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:02,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 29 [2024-11-16 06:53:02,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226211825] [2024-11-16 06:53:02,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:02,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 06:53:02,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:02,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 06:53:02,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=741, Unknown=0, NotChecked=0, Total=812 [2024-11-16 06:53:02,176 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:02,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:02,407 INFO L93 Difference]: Finished difference Result 166 states and 183 transitions. [2024-11-16 06:53:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 06:53:02,408 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-16 06:53:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:02,408 INFO L225 Difference]: With dead ends: 166 [2024-11-16 06:53:02,408 INFO L226 Difference]: Without dead ends: 154 [2024-11-16 06:53:02,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 06:53:02,409 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 66 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:02,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 763 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:02,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-16 06:53:02,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 137. [2024-11-16 06:53:02,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.1176470588235294) internal successors, (152), 136 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2024-11-16 06:53:02,417 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 45 [2024-11-16 06:53:02,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:02,417 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2024-11-16 06:53:02,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:02,418 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2024-11-16 06:53:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-16 06:53:02,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:02,418 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:02,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-16 06:53:02,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-16 06:53:02,618 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:02,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:02,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1205832510, now seen corresponding path program 14 times [2024-11-16 06:53:02,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:02,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161862687] [2024-11-16 06:53:02,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:02,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:02,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:02,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161862687] [2024-11-16 06:53:02,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161862687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:02,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692617377] [2024-11-16 06:53:02,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:53:02,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:02,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:02,862 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:02,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 06:53:02,916 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:53:02,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:02,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 06:53:02,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:03,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:03,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692617377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:03,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:03,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 27 [2024-11-16 06:53:03,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281813612] [2024-11-16 06:53:03,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:03,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 06:53:03,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:03,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 06:53:03,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2024-11-16 06:53:03,191 INFO L87 Difference]: Start difference. First operand 137 states and 152 transitions. Second operand has 27 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:03,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:03,395 INFO L93 Difference]: Finished difference Result 169 states and 187 transitions. [2024-11-16 06:53:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 06:53:03,396 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-16 06:53:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:03,397 INFO L225 Difference]: With dead ends: 169 [2024-11-16 06:53:03,397 INFO L226 Difference]: Without dead ends: 162 [2024-11-16 06:53:03,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:53:03,398 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 38 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:03,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 662 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:03,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-16 06:53:03,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2024-11-16 06:53:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.1176470588235294) internal successors, (171), 153 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 171 transitions. [2024-11-16 06:53:03,407 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 171 transitions. Word has length 45 [2024-11-16 06:53:03,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:03,408 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 171 transitions. [2024-11-16 06:53:03,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 171 transitions. [2024-11-16 06:53:03,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 06:53:03,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:03,408 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:03,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:03,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:03,609 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:03,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:03,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1212652351, now seen corresponding path program 15 times [2024-11-16 06:53:03,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:03,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782362548] [2024-11-16 06:53:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:03,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:03,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:03,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782362548] [2024-11-16 06:53:03,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782362548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:03,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085552891] [2024-11-16 06:53:03,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:03,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:03,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:03,737 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:03,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 06:53:03,795 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 06:53:03,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:03,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 06:53:03,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:03,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:04,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085552891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:04,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:04,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-11-16 06:53:04,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280359709] [2024-11-16 06:53:04,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:04,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 06:53:04,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:04,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 06:53:04,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-16 06:53:04,170 INFO L87 Difference]: Start difference. First operand 154 states and 171 transitions. Second operand has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:04,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:04,418 INFO L93 Difference]: Finished difference Result 212 states and 235 transitions. [2024-11-16 06:53:04,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 06:53:04,419 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-16 06:53:04,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:04,421 INFO L225 Difference]: With dead ends: 212 [2024-11-16 06:53:04,421 INFO L226 Difference]: Without dead ends: 170 [2024-11-16 06:53:04,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:53:04,422 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:04,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 335 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:04,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-16 06:53:04,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 160. [2024-11-16 06:53:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.1257861635220126) internal successors, (179), 159 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:04,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 179 transitions. [2024-11-16 06:53:04,459 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 179 transitions. Word has length 47 [2024-11-16 06:53:04,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:04,459 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 179 transitions. [2024-11-16 06:53:04,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:04,460 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 179 transitions. [2024-11-16 06:53:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 06:53:04,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:04,462 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:04,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-16 06:53:04,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:04,666 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:04,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1176278493, now seen corresponding path program 16 times [2024-11-16 06:53:04,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:04,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685426871] [2024-11-16 06:53:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:04,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:04,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685426871] [2024-11-16 06:53:04,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685426871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60997046] [2024-11-16 06:53:04,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:04,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:04,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:04,854 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:04,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 06:53:04,908 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:04,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:04,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 06:53:04,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:05,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:05,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60997046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:05,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:05,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-11-16 06:53:05,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017016571] [2024-11-16 06:53:05,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:05,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 06:53:05,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:05,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 06:53:05,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-11-16 06:53:05,287 INFO L87 Difference]: Start difference. First operand 160 states and 179 transitions. Second operand has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:05,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:05,501 INFO L93 Difference]: Finished difference Result 183 states and 204 transitions. [2024-11-16 06:53:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 06:53:05,502 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-16 06:53:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:05,502 INFO L225 Difference]: With dead ends: 183 [2024-11-16 06:53:05,503 INFO L226 Difference]: Without dead ends: 164 [2024-11-16 06:53:05,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:53:05,503 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:05,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 465 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:05,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-16 06:53:05,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-16 06:53:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.1226993865030674) internal successors, (183), 163 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 183 transitions. [2024-11-16 06:53:05,515 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 183 transitions. Word has length 47 [2024-11-16 06:53:05,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:05,515 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 183 transitions. [2024-11-16 06:53:05,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:05,515 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 183 transitions. [2024-11-16 06:53:05,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 06:53:05,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:05,515 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:05,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-16 06:53:05,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:05,722 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:05,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:05,722 INFO L85 PathProgramCache]: Analyzing trace with hash -688155395, now seen corresponding path program 17 times [2024-11-16 06:53:05,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:05,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683552224] [2024-11-16 06:53:05,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:05,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:53:05,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:05,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683552224] [2024-11-16 06:53:05,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683552224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:05,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573016666] [2024-11-16 06:53:05,837 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:05,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:05,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:05,841 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:05,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 06:53:05,910 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-16 06:53:05,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:05,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:53:05,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:53:05,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:53:06,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573016666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:06,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:06,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-16 06:53:06,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061537552] [2024-11-16 06:53:06,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:06,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 06:53:06,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 06:53:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:53:06,036 INFO L87 Difference]: Start difference. First operand 164 states and 183 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:06,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:06,077 INFO L93 Difference]: Finished difference Result 219 states and 245 transitions. [2024-11-16 06:53:06,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 06:53:06,077 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-16 06:53:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:06,078 INFO L225 Difference]: With dead ends: 219 [2024-11-16 06:53:06,078 INFO L226 Difference]: Without dead ends: 199 [2024-11-16 06:53:06,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 85 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-11-16 06:53:06,079 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:06,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 119 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:53:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-16 06:53:06,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2024-11-16 06:53:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.1288659793814433) internal successors, (219), 194 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 219 transitions. [2024-11-16 06:53:06,092 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 219 transitions. Word has length 47 [2024-11-16 06:53:06,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:06,092 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 219 transitions. [2024-11-16 06:53:06,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:06,092 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 219 transitions. [2024-11-16 06:53:06,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 06:53:06,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:06,093 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:06,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-16 06:53:06,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-16 06:53:06,294 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:06,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:06,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1851043167, now seen corresponding path program 18 times [2024-11-16 06:53:06,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:06,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146202510] [2024-11-16 06:53:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:06,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:53:06,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:06,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146202510] [2024-11-16 06:53:06,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146202510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:06,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555501724] [2024-11-16 06:53:06,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:06,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:06,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:06,344 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:06,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 06:53:06,400 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-16 06:53:06,400 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:06,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:53:06,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:53:06,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 06:53:06,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555501724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:06,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:06,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-16 06:53:06,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747871534] [2024-11-16 06:53:06,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:06,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 06:53:06,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:06,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 06:53:06,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:53:06,476 INFO L87 Difference]: Start difference. First operand 195 states and 219 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:06,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:06,524 INFO L93 Difference]: Finished difference Result 340 states and 387 transitions. [2024-11-16 06:53:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 06:53:06,524 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-16 06:53:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:06,525 INFO L225 Difference]: With dead ends: 340 [2024-11-16 06:53:06,525 INFO L226 Difference]: Without dead ends: 235 [2024-11-16 06:53:06,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 85 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-11-16 06:53:06,526 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:06,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 161 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:53:06,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-16 06:53:06,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-11-16 06:53:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1282051282051282) internal successors, (264), 234 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 264 transitions. [2024-11-16 06:53:06,542 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 264 transitions. Word has length 47 [2024-11-16 06:53:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:06,542 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 264 transitions. [2024-11-16 06:53:06,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 264 transitions. [2024-11-16 06:53:06,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 06:53:06,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:06,543 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:06,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:06,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-16 06:53:06,745 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:06,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:06,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2082482850, now seen corresponding path program 19 times [2024-11-16 06:53:06,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:06,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506939675] [2024-11-16 06:53:06,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:06,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:06,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:06,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506939675] [2024-11-16 06:53:06,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506939675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:06,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331388719] [2024-11-16 06:53:06,996 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:06,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:06,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:06,998 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:06,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-16 06:53:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:07,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 06:53:07,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:07,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:07,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331388719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:07,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:07,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 32 [2024-11-16 06:53:07,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610646211] [2024-11-16 06:53:07,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:07,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 06:53:07,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:07,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 06:53:07,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2024-11-16 06:53:07,387 INFO L87 Difference]: Start difference. First operand 235 states and 264 transitions. Second operand has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:07,712 INFO L93 Difference]: Finished difference Result 290 states and 323 transitions. [2024-11-16 06:53:07,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 06:53:07,713 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 06:53:07,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:07,714 INFO L225 Difference]: With dead ends: 290 [2024-11-16 06:53:07,714 INFO L226 Difference]: Without dead ends: 278 [2024-11-16 06:53:07,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 06:53:07,715 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 80 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:07,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1100 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:07,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-16 06:53:07,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 250. [2024-11-16 06:53:07,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.1244979919678715) internal successors, (280), 249 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 280 transitions. [2024-11-16 06:53:07,733 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 280 transitions. Word has length 49 [2024-11-16 06:53:07,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:07,733 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 280 transitions. [2024-11-16 06:53:07,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:07,733 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 280 transitions. [2024-11-16 06:53:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 06:53:07,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:07,734 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:07,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:07,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-16 06:53:07,935 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:07,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:07,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1229747394, now seen corresponding path program 20 times [2024-11-16 06:53:07,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:07,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930708628] [2024-11-16 06:53:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:07,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 06:53:08,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:08,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930708628] [2024-11-16 06:53:08,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930708628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:08,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311562699] [2024-11-16 06:53:08,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:53:08,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:08,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:08,032 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:08,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-16 06:53:08,088 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:53:08,088 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:08,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 06:53:08,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 06:53:08,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 06:53:08,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311562699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:08,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:08,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-16 06:53:08,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578616739] [2024-11-16 06:53:08,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:08,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 06:53:08,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:08,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 06:53:08,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-16 06:53:08,321 INFO L87 Difference]: Start difference. First operand 250 states and 280 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:08,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:08,431 INFO L93 Difference]: Finished difference Result 329 states and 367 transitions. [2024-11-16 06:53:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 06:53:08,432 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 06:53:08,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:08,433 INFO L225 Difference]: With dead ends: 329 [2024-11-16 06:53:08,433 INFO L226 Difference]: Without dead ends: 267 [2024-11-16 06:53:08,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-16 06:53:08,434 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:08,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 325 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:53:08,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-16 06:53:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2024-11-16 06:53:08,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.112781954887218) internal successors, (296), 266 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 296 transitions. [2024-11-16 06:53:08,455 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 296 transitions. Word has length 49 [2024-11-16 06:53:08,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:08,455 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 296 transitions. [2024-11-16 06:53:08,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 296 transitions. [2024-11-16 06:53:08,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 06:53:08,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:08,456 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:08,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:08,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:08,660 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:08,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:08,660 INFO L85 PathProgramCache]: Analyzing trace with hash -882128866, now seen corresponding path program 21 times [2024-11-16 06:53:08,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:08,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608908990] [2024-11-16 06:53:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:08,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:08,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:08,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608908990] [2024-11-16 06:53:08,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608908990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:08,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680813631] [2024-11-16 06:53:08,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:08,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:08,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:08,845 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:08,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-16 06:53:08,905 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 06:53:08,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:08,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-16 06:53:08,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:09,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:09,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680813631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:09,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:09,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-11-16 06:53:09,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499003480] [2024-11-16 06:53:09,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:09,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 06:53:09,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:09,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 06:53:09,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:53:09,203 INFO L87 Difference]: Start difference. First operand 267 states and 296 transitions. Second operand has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:09,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:09,504 INFO L93 Difference]: Finished difference Result 316 states and 349 transitions. [2024-11-16 06:53:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 06:53:09,504 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 06:53:09,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:09,505 INFO L225 Difference]: With dead ends: 316 [2024-11-16 06:53:09,505 INFO L226 Difference]: Without dead ends: 281 [2024-11-16 06:53:09,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=1355, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 06:53:09,506 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 50 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:09,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 889 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-16 06:53:09,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 266. [2024-11-16 06:53:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.1169811320754717) internal successors, (296), 265 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 296 transitions. [2024-11-16 06:53:09,538 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 296 transitions. Word has length 49 [2024-11-16 06:53:09,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:09,538 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 296 transitions. [2024-11-16 06:53:09,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 30 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:09,538 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 296 transitions. [2024-11-16 06:53:09,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 06:53:09,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:09,539 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:09,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-16 06:53:09,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:09,744 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:09,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:09,744 INFO L85 PathProgramCache]: Analyzing trace with hash -749752386, now seen corresponding path program 22 times [2024-11-16 06:53:09,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:09,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864943607] [2024-11-16 06:53:09,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:09,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 06:53:09,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:09,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864943607] [2024-11-16 06:53:09,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864943607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:09,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046911655] [2024-11-16 06:53:09,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:09,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:09,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:09,876 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:09,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-16 06:53:09,962 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:09,963 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:09,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 06:53:09,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 06:53:10,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 06:53:10,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046911655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:10,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:10,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2024-11-16 06:53:10,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993492598] [2024-11-16 06:53:10,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:10,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 06:53:10,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:10,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 06:53:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-16 06:53:10,202 INFO L87 Difference]: Start difference. First operand 266 states and 296 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:10,332 INFO L93 Difference]: Finished difference Result 298 states and 328 transitions. [2024-11-16 06:53:10,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 06:53:10,332 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 06:53:10,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:10,333 INFO L225 Difference]: With dead ends: 298 [2024-11-16 06:53:10,334 INFO L226 Difference]: Without dead ends: 266 [2024-11-16 06:53:10,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-11-16 06:53:10,334 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:10,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 351 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:10,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-16 06:53:10,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-16 06:53:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.1018867924528302) internal successors, (292), 265 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 292 transitions. [2024-11-16 06:53:10,355 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 292 transitions. Word has length 49 [2024-11-16 06:53:10,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:10,355 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 292 transitions. [2024-11-16 06:53:10,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 292 transitions. [2024-11-16 06:53:10,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 06:53:10,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:10,356 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:10,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:10,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-16 06:53:10,556 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:10,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1573992607, now seen corresponding path program 23 times [2024-11-16 06:53:10,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:10,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168163144] [2024-11-16 06:53:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:10,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:10,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:10,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168163144] [2024-11-16 06:53:10,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168163144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:10,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232091494] [2024-11-16 06:53:10,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:10,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:10,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:10,815 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:10,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-16 06:53:10,875 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-16 06:53:10,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:10,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 06:53:10,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:11,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:11,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232091494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:11,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:11,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-11-16 06:53:11,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892830616] [2024-11-16 06:53:11,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:11,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 06:53:11,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 06:53:11,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2024-11-16 06:53:11,318 INFO L87 Difference]: Start difference. First operand 266 states and 292 transitions. Second operand has 29 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:11,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:11,611 INFO L93 Difference]: Finished difference Result 372 states and 407 transitions. [2024-11-16 06:53:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 06:53:11,612 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-16 06:53:11,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:11,613 INFO L225 Difference]: With dead ends: 372 [2024-11-16 06:53:11,613 INFO L226 Difference]: Without dead ends: 323 [2024-11-16 06:53:11,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=1153, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 06:53:11,614 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:11,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 437 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:11,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-16 06:53:11,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 293. [2024-11-16 06:53:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.1027397260273972) internal successors, (322), 292 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:11,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 322 transitions. [2024-11-16 06:53:11,641 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 322 transitions. Word has length 51 [2024-11-16 06:53:11,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:11,641 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 322 transitions. [2024-11-16 06:53:11,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.2758620689655173) internal successors, (95), 29 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:11,641 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 322 transitions. [2024-11-16 06:53:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 06:53:11,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:11,642 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:11,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-16 06:53:11,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-16 06:53:11,846 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:11,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:11,847 INFO L85 PathProgramCache]: Analyzing trace with hash 978453437, now seen corresponding path program 24 times [2024-11-16 06:53:11,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:11,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628273310] [2024-11-16 06:53:11,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:11,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:12,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:12,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628273310] [2024-11-16 06:53:12,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628273310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:12,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374302494] [2024-11-16 06:53:12,054 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:12,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:12,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:12,055 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:12,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-16 06:53:12,127 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-16 06:53:12,127 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:12,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 06:53:12,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:12,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:12,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374302494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:12,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:12,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2024-11-16 06:53:12,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778773640] [2024-11-16 06:53:12,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:12,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 06:53:12,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:12,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 06:53:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:53:12,674 INFO L87 Difference]: Start difference. First operand 293 states and 322 transitions. Second operand has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 30 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:13,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:13,052 INFO L93 Difference]: Finished difference Result 321 states and 353 transitions. [2024-11-16 06:53:13,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 06:53:13,053 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 30 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-16 06:53:13,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:13,054 INFO L225 Difference]: With dead ends: 321 [2024-11-16 06:53:13,054 INFO L226 Difference]: Without dead ends: 299 [2024-11-16 06:53:13,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 81 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 06:53:13,055 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 1 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:13,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 741 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-16 06:53:13,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2024-11-16 06:53:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.1006711409395973) internal successors, (328), 298 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:13,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 328 transitions. [2024-11-16 06:53:13,083 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 328 transitions. Word has length 51 [2024-11-16 06:53:13,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:13,083 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 328 transitions. [2024-11-16 06:53:13,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.2333333333333334) internal successors, (97), 30 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:13,083 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 328 transitions. [2024-11-16 06:53:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 06:53:13,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:13,084 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:13,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-16 06:53:13,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:13,285 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:13,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:13,285 INFO L85 PathProgramCache]: Analyzing trace with hash -923307555, now seen corresponding path program 25 times [2024-11-16 06:53:13,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:13,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115809866] [2024-11-16 06:53:13,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:13,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:53:13,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:13,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115809866] [2024-11-16 06:53:13,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115809866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:13,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473654700] [2024-11-16 06:53:13,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:13,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:13,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:13,350 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:13,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-16 06:53:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:13,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 06:53:13,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:53:13,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:53:13,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473654700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:13,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:13,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 06:53:13,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916824540] [2024-11-16 06:53:13,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:13,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 06:53:13,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:13,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 06:53:13,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:53:13,508 INFO L87 Difference]: Start difference. First operand 299 states and 328 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:13,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:13,573 INFO L93 Difference]: Finished difference Result 371 states and 407 transitions. [2024-11-16 06:53:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 06:53:13,574 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-16 06:53:13,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:13,575 INFO L225 Difference]: With dead ends: 371 [2024-11-16 06:53:13,575 INFO L226 Difference]: Without dead ends: 276 [2024-11-16 06:53:13,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 91 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-11-16 06:53:13,576 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 30 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:13,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:53:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-16 06:53:13,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2024-11-16 06:53:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.0945454545454545) internal successors, (301), 275 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 301 transitions. [2024-11-16 06:53:13,612 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 301 transitions. Word has length 51 [2024-11-16 06:53:13,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:13,612 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 301 transitions. [2024-11-16 06:53:13,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:13,612 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 301 transitions. [2024-11-16 06:53:13,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 06:53:13,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:13,613 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:13,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:13,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:13,814 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:13,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash -773119425, now seen corresponding path program 26 times [2024-11-16 06:53:13,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:13,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024019548] [2024-11-16 06:53:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:13,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:53:13,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024019548] [2024-11-16 06:53:13,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024019548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:13,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657777585] [2024-11-16 06:53:13,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:53:13,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:13,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:13,875 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:13,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-16 06:53:13,946 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:53:13,946 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:13,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 06:53:13,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:53:13,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:53:14,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657777585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:14,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:14,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-16 06:53:14,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803388718] [2024-11-16 06:53:14,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:14,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 06:53:14,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:14,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 06:53:14,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:53:14,024 INFO L87 Difference]: Start difference. First operand 276 states and 301 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:14,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:14,085 INFO L93 Difference]: Finished difference Result 289 states and 314 transitions. [2024-11-16 06:53:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 06:53:14,085 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-16 06:53:14,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:14,086 INFO L225 Difference]: With dead ends: 289 [2024-11-16 06:53:14,086 INFO L226 Difference]: Without dead ends: 282 [2024-11-16 06:53:14,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 91 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-11-16 06:53:14,088 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:14,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 254 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:53:14,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-16 06:53:14,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 278. [2024-11-16 06:53:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.0938628158844765) internal successors, (303), 277 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 303 transitions. [2024-11-16 06:53:14,111 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 303 transitions. Word has length 51 [2024-11-16 06:53:14,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:14,112 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 303 transitions. [2024-11-16 06:53:14,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:14,112 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 303 transitions. [2024-11-16 06:53:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-16 06:53:14,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:14,113 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:14,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:14,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:14,313 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:14,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:14,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1081166654, now seen corresponding path program 27 times [2024-11-16 06:53:14,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:14,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416815415] [2024-11-16 06:53:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:14,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:14,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:14,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416815415] [2024-11-16 06:53:14,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416815415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:14,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649144388] [2024-11-16 06:53:14,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:14,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:14,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:14,532 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:14,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-16 06:53:14,592 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-16 06:53:14,592 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:14,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-16 06:53:14,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:14,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:14,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649144388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:14,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:14,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 35 [2024-11-16 06:53:14,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688615148] [2024-11-16 06:53:14,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:14,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 06:53:14,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:14,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 06:53:14,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:53:14,948 INFO L87 Difference]: Start difference. First operand 278 states and 303 transitions. Second operand has 35 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 35 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:15,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:15,354 INFO L93 Difference]: Finished difference Result 339 states and 368 transitions. [2024-11-16 06:53:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 06:53:15,355 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 35 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-16 06:53:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:15,356 INFO L225 Difference]: With dead ends: 339 [2024-11-16 06:53:15,356 INFO L226 Difference]: Without dead ends: 327 [2024-11-16 06:53:15,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=1930, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 06:53:15,357 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 92 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:15,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1426 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:53:15,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-16 06:53:15,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 293. [2024-11-16 06:53:15,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.0924657534246576) internal successors, (319), 292 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 319 transitions. [2024-11-16 06:53:15,384 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 319 transitions. Word has length 53 [2024-11-16 06:53:15,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:15,385 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 319 transitions. [2024-11-16 06:53:15,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.3714285714285714) internal successors, (83), 35 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 319 transitions. [2024-11-16 06:53:15,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-16 06:53:15,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:15,386 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:15,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:15,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-16 06:53:15,590 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:15,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1259592322, now seen corresponding path program 28 times [2024-11-16 06:53:15,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:15,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952237787] [2024-11-16 06:53:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:15,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:15,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:15,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952237787] [2024-11-16 06:53:15,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952237787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:15,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868989644] [2024-11-16 06:53:15,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:15,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:15,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:15,955 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:15,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-16 06:53:16,019 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:16,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:16,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 06:53:16,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:16,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:16,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868989644] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:16,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:16,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 33 [2024-11-16 06:53:16,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698097815] [2024-11-16 06:53:16,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:16,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 06:53:16,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:16,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 06:53:16,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 06:53:16,385 INFO L87 Difference]: Start difference. First operand 293 states and 319 transitions. Second operand has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:16,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:16,765 INFO L93 Difference]: Finished difference Result 315 states and 340 transitions. [2024-11-16 06:53:16,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 06:53:16,765 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-16 06:53:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:16,766 INFO L225 Difference]: With dead ends: 315 [2024-11-16 06:53:16,766 INFO L226 Difference]: Without dead ends: 278 [2024-11-16 06:53:16,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=1668, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 06:53:16,767 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 61 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:16,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1212 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:16,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-16 06:53:16,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2024-11-16 06:53:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.0938628158844765) internal successors, (303), 277 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 303 transitions. [2024-11-16 06:53:16,791 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 303 transitions. Word has length 53 [2024-11-16 06:53:16,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:16,791 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 303 transitions. [2024-11-16 06:53:16,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 303 transitions. [2024-11-16 06:53:16,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-16 06:53:16,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:16,792 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:16,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:16,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-16 06:53:16,993 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:16,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:16,995 INFO L85 PathProgramCache]: Analyzing trace with hash 209547198, now seen corresponding path program 29 times [2024-11-16 06:53:16,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:16,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159560190] [2024-11-16 06:53:16,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:16,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:53:17,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:17,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159560190] [2024-11-16 06:53:17,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159560190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:17,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561524779] [2024-11-16 06:53:17,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:17,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:17,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:17,176 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:17,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-16 06:53:17,239 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-16 06:53:17,239 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:17,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 06:53:17,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:53:17,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:53:17,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561524779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:17,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:17,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 31 [2024-11-16 06:53:17,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376795502] [2024-11-16 06:53:17,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:17,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 06:53:17,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:17,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 06:53:17,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2024-11-16 06:53:17,562 INFO L87 Difference]: Start difference. First operand 278 states and 303 transitions. Second operand has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:17,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:17,820 INFO L93 Difference]: Finished difference Result 314 states and 342 transitions. [2024-11-16 06:53:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 06:53:17,821 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-16 06:53:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:17,821 INFO L225 Difference]: With dead ends: 314 [2024-11-16 06:53:17,822 INFO L226 Difference]: Without dead ends: 307 [2024-11-16 06:53:17,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=1424, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 06:53:17,822 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 40 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:17,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 778 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:17,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-16 06:53:17,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 297. [2024-11-16 06:53:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.0945945945945945) internal successors, (324), 296 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 324 transitions. [2024-11-16 06:53:17,848 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 324 transitions. Word has length 53 [2024-11-16 06:53:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:17,848 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 324 transitions. [2024-11-16 06:53:17,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 324 transitions. [2024-11-16 06:53:17,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-16 06:53:17,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:17,849 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:17,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:18,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-16 06:53:18,049 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:18,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:18,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1004320383, now seen corresponding path program 30 times [2024-11-16 06:53:18,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:18,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906566228] [2024-11-16 06:53:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:18,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:18,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:18,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906566228] [2024-11-16 06:53:18,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906566228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:18,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279430414] [2024-11-16 06:53:18,218 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:18,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:18,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:18,220 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:18,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-16 06:53:18,283 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-16 06:53:18,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:18,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 06:53:18,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:18,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:18,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279430414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:18,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:18,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2024-11-16 06:53:18,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744887013] [2024-11-16 06:53:18,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:18,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-16 06:53:18,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:18,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-16 06:53:18,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 06:53:18,845 INFO L87 Difference]: Start difference. First operand 297 states and 324 transitions. Second operand has 34 states, 34 states have (on average 3.088235294117647) internal successors, (105), 34 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:19,213 INFO L93 Difference]: Finished difference Result 417 states and 453 transitions. [2024-11-16 06:53:19,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 06:53:19,213 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.088235294117647) internal successors, (105), 34 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-16 06:53:19,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:19,215 INFO L225 Difference]: With dead ends: 417 [2024-11-16 06:53:19,215 INFO L226 Difference]: Without dead ends: 364 [2024-11-16 06:53:19,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 86 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=1659, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 06:53:19,216 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:19,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 649 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:19,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-16 06:53:19,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 326. [2024-11-16 06:53:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.0953846153846154) internal successors, (356), 325 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 356 transitions. [2024-11-16 06:53:19,249 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 356 transitions. Word has length 55 [2024-11-16 06:53:19,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:19,249 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 356 transitions. [2024-11-16 06:53:19,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.088235294117647) internal successors, (105), 34 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 356 transitions. [2024-11-16 06:53:19,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-16 06:53:19,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:19,250 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:19,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:19,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-16 06:53:19,451 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:19,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:19,451 INFO L85 PathProgramCache]: Analyzing trace with hash -78171619, now seen corresponding path program 31 times [2024-11-16 06:53:19,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:19,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675083785] [2024-11-16 06:53:19,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:19,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:19,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:19,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675083785] [2024-11-16 06:53:19,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675083785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:19,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785897428] [2024-11-16 06:53:19,634 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:19,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:19,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:19,636 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:19,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-16 06:53:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:19,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 06:53:19,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:20,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:20,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785897428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:20,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:20,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 34 [2024-11-16 06:53:20,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585721832] [2024-11-16 06:53:20,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:20,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-16 06:53:20,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:20,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-16 06:53:20,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1030, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 06:53:20,305 INFO L87 Difference]: Start difference. First operand 326 states and 356 transitions. Second operand has 34 states, 34 states have (on average 3.088235294117647) internal successors, (105), 34 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:20,779 INFO L93 Difference]: Finished difference Result 356 states and 389 transitions. [2024-11-16 06:53:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 06:53:20,779 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.088235294117647) internal successors, (105), 34 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-16 06:53:20,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:20,784 INFO L225 Difference]: With dead ends: 356 [2024-11-16 06:53:20,784 INFO L226 Difference]: Without dead ends: 332 [2024-11-16 06:53:20,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 85 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=162, Invalid=1644, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 06:53:20,788 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:20,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 864 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-16 06:53:20,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2024-11-16 06:53:20,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.093655589123867) internal successors, (362), 331 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:20,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 362 transitions. [2024-11-16 06:53:20,861 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 362 transitions. Word has length 55 [2024-11-16 06:53:20,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:20,861 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 362 transitions. [2024-11-16 06:53:20,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.088235294117647) internal successors, (105), 34 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 362 transitions. [2024-11-16 06:53:20,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-16 06:53:20,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:20,866 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:20,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:21,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:21,067 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:21,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:21,067 INFO L85 PathProgramCache]: Analyzing trace with hash -340633219, now seen corresponding path program 32 times [2024-11-16 06:53:21,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:21,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342070316] [2024-11-16 06:53:21,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:21,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:53:21,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:21,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342070316] [2024-11-16 06:53:21,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342070316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:21,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457815938] [2024-11-16 06:53:21,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:53:21,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:21,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:21,147 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:21,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-16 06:53:21,220 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:53:21,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:21,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 06:53:21,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:53:21,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:53:21,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457815938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:21,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:21,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-11-16 06:53:21,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851063927] [2024-11-16 06:53:21,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:21,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 06:53:21,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:21,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 06:53:21,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:53:21,327 INFO L87 Difference]: Start difference. First operand 332 states and 362 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:21,427 INFO L93 Difference]: Finished difference Result 407 states and 446 transitions. [2024-11-16 06:53:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 06:53:21,427 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-16 06:53:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:21,428 INFO L225 Difference]: With dead ends: 407 [2024-11-16 06:53:21,428 INFO L226 Difference]: Without dead ends: 385 [2024-11-16 06:53:21,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-11-16 06:53:21,429 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 20 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:21,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 278 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:53:21,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-16 06:53:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 375. [2024-11-16 06:53:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 1.1016042780748663) internal successors, (412), 374 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 412 transitions. [2024-11-16 06:53:21,480 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 412 transitions. Word has length 55 [2024-11-16 06:53:21,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:21,480 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 412 transitions. [2024-11-16 06:53:21,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:21,480 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 412 transitions. [2024-11-16 06:53:21,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-16 06:53:21,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:21,481 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:21,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:21,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-16 06:53:21,687 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:21,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:21,688 INFO L85 PathProgramCache]: Analyzing trace with hash -2038728353, now seen corresponding path program 33 times [2024-11-16 06:53:21,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:21,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046210069] [2024-11-16 06:53:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:21,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:53:21,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:21,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046210069] [2024-11-16 06:53:21,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046210069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:21,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52197564] [2024-11-16 06:53:21,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:21,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:21,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:21,759 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:21,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-16 06:53:21,823 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 06:53:21,823 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:21,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 06:53:21,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:53:21,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-16 06:53:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52197564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:21,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:21,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-11-16 06:53:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445318318] [2024-11-16 06:53:21,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:21,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 06:53:21,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:21,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 06:53:21,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:53:21,930 INFO L87 Difference]: Start difference. First operand 375 states and 412 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:22,037 INFO L93 Difference]: Finished difference Result 606 states and 676 transitions. [2024-11-16 06:53:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 06:53:22,037 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-16 06:53:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:22,039 INFO L225 Difference]: With dead ends: 606 [2024-11-16 06:53:22,039 INFO L226 Difference]: Without dead ends: 445 [2024-11-16 06:53:22,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2024-11-16 06:53:22,039 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 17 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:22,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 264 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:53:22,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-16 06:53:22,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2024-11-16 06:53:22,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.1013513513513513) internal successors, (489), 444 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:22,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 489 transitions. [2024-11-16 06:53:22,086 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 489 transitions. Word has length 55 [2024-11-16 06:53:22,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:22,086 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 489 transitions. [2024-11-16 06:53:22,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:22,086 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 489 transitions. [2024-11-16 06:53:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 06:53:22,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:22,087 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:22,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:22,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:22,288 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:22,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:22,288 INFO L85 PathProgramCache]: Analyzing trace with hash -723230306, now seen corresponding path program 34 times [2024-11-16 06:53:22,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:22,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820892695] [2024-11-16 06:53:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:22,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:22,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:22,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820892695] [2024-11-16 06:53:22,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820892695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:22,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205653544] [2024-11-16 06:53:22,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:22,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:22,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:22,607 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:22,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-16 06:53:22,678 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:22,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:22,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-16 06:53:22,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:23,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:23,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205653544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:23,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:23,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 38 [2024-11-16 06:53:23,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207414872] [2024-11-16 06:53:23,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:23,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-16 06:53:23,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:23,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-16 06:53:23,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1314, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 06:53:23,187 INFO L87 Difference]: Start difference. First operand 445 states and 489 transitions. Second operand has 38 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 38 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:23,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:23,733 INFO L93 Difference]: Finished difference Result 519 states and 568 transitions. [2024-11-16 06:53:23,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 06:53:23,733 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 38 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-16 06:53:23,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:23,735 INFO L225 Difference]: With dead ends: 519 [2024-11-16 06:53:23,735 INFO L226 Difference]: Without dead ends: 507 [2024-11-16 06:53:23,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=2299, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 06:53:23,736 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 106 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:23,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 2041 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 06:53:23,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-16 06:53:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 460. [2024-11-16 06:53:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.1002178649237473) internal successors, (505), 459 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 505 transitions. [2024-11-16 06:53:23,793 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 505 transitions. Word has length 57 [2024-11-16 06:53:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:23,793 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 505 transitions. [2024-11-16 06:53:23,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3684210526315788) internal successors, (90), 38 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 505 transitions. [2024-11-16 06:53:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 06:53:23,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:23,794 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:23,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:23,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:23,998 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:23,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1556462754, now seen corresponding path program 35 times [2024-11-16 06:53:23,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:23,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838433158] [2024-11-16 06:53:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:23,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:24,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:24,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838433158] [2024-11-16 06:53:24,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838433158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:24,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859172446] [2024-11-16 06:53:24,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:24,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:24,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:24,240 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:24,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-16 06:53:24,305 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-16 06:53:24,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:24,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-16 06:53:24,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:24,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:24,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859172446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:24,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:24,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 36 [2024-11-16 06:53:24,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199008511] [2024-11-16 06:53:24,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:24,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-16 06:53:24,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:24,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-16 06:53:24,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 06:53:24,685 INFO L87 Difference]: Start difference. First operand 460 states and 505 transitions. Second operand has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 36 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:25,110 INFO L93 Difference]: Finished difference Result 484 states and 528 transitions. [2024-11-16 06:53:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 06:53:25,110 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 36 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-16 06:53:25,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:25,112 INFO L225 Difference]: With dead ends: 484 [2024-11-16 06:53:25,112 INFO L226 Difference]: Without dead ends: 445 [2024-11-16 06:53:25,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=2013, Unknown=0, NotChecked=0, Total=2162 [2024-11-16 06:53:25,112 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 71 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:25,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1521 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:25,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-16 06:53:25,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2024-11-16 06:53:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.1013513513513513) internal successors, (489), 444 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 489 transitions. [2024-11-16 06:53:25,158 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 489 transitions. Word has length 57 [2024-11-16 06:53:25,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:25,158 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 489 transitions. [2024-11-16 06:53:25,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 36 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:25,158 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 489 transitions. [2024-11-16 06:53:25,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 06:53:25,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:25,159 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:25,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:25,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-16 06:53:25,360 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:25,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:25,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2020878142, now seen corresponding path program 36 times [2024-11-16 06:53:25,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:25,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563536358] [2024-11-16 06:53:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:25,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 06:53:25,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:25,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563536358] [2024-11-16 06:53:25,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563536358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:25,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073338521] [2024-11-16 06:53:25,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:25,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:25,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:25,483 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:25,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-16 06:53:25,552 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-16 06:53:25,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:25,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 06:53:25,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:25,713 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 06:53:25,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 06:53:25,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073338521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:25,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:25,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-11-16 06:53:25,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995961711] [2024-11-16 06:53:25,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:25,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 06:53:25,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:25,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 06:53:25,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-16 06:53:25,868 INFO L87 Difference]: Start difference. First operand 445 states and 489 transitions. Second operand has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:26,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:26,149 INFO L93 Difference]: Finished difference Result 566 states and 622 transitions. [2024-11-16 06:53:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 06:53:26,149 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-16 06:53:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:26,150 INFO L225 Difference]: With dead ends: 566 [2024-11-16 06:53:26,151 INFO L226 Difference]: Without dead ends: 486 [2024-11-16 06:53:26,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:53:26,151 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:26,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 528 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:26,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2024-11-16 06:53:26,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2024-11-16 06:53:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 1.090721649484536) internal successors, (529), 485 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 529 transitions. [2024-11-16 06:53:26,239 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 529 transitions. Word has length 57 [2024-11-16 06:53:26,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:26,239 INFO L471 AbstractCegarLoop]: Abstraction has 486 states and 529 transitions. [2024-11-16 06:53:26,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 24 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 529 transitions. [2024-11-16 06:53:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 06:53:26,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:26,240 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:26,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:26,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-16 06:53:26,441 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:26,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:26,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1241860834, now seen corresponding path program 37 times [2024-11-16 06:53:26,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:26,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866069471] [2024-11-16 06:53:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:26,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:53:26,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:26,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866069471] [2024-11-16 06:53:26,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866069471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:26,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082686239] [2024-11-16 06:53:26,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:26,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:26,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:26,709 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:26,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-16 06:53:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:26,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 06:53:26,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:53:27,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:53:27,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082686239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:27,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:27,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 34 [2024-11-16 06:53:27,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707830987] [2024-11-16 06:53:27,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:27,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-16 06:53:27,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:27,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-16 06:53:27,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 06:53:27,164 INFO L87 Difference]: Start difference. First operand 486 states and 529 transitions. Second operand has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:27,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:27,516 INFO L93 Difference]: Finished difference Result 541 states and 588 transitions. [2024-11-16 06:53:27,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 06:53:27,517 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-16 06:53:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:27,518 INFO L225 Difference]: With dead ends: 541 [2024-11-16 06:53:27,518 INFO L226 Difference]: Without dead ends: 500 [2024-11-16 06:53:27,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=1745, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 06:53:27,519 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 52 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:27,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1066 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-16 06:53:27,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 483. [2024-11-16 06:53:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.0933609958506223) internal successors, (527), 482 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:27,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 527 transitions. [2024-11-16 06:53:27,568 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 527 transitions. Word has length 57 [2024-11-16 06:53:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:27,568 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 527 transitions. [2024-11-16 06:53:27,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 34 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 527 transitions. [2024-11-16 06:53:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 06:53:27,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:27,569 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:27,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-16 06:53:27,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-16 06:53:27,770 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:27,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:27,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1320791230, now seen corresponding path program 38 times [2024-11-16 06:53:27,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:27,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648702430] [2024-11-16 06:53:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:27,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-16 06:53:27,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:27,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648702430] [2024-11-16 06:53:27,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648702430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:27,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139705654] [2024-11-16 06:53:27,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:53:27,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:27,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:27,924 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:27,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-16 06:53:28,008 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:53:28,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:28,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 06:53:28,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 06:53:28,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-16 06:53:28,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139705654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:28,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:28,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-11-16 06:53:28,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639765671] [2024-11-16 06:53:28,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:28,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 06:53:28,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:28,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 06:53:28,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2024-11-16 06:53:28,451 INFO L87 Difference]: Start difference. First operand 483 states and 527 transitions. Second operand has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:28,710 INFO L93 Difference]: Finished difference Result 525 states and 569 transitions. [2024-11-16 06:53:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 06:53:28,711 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-16 06:53:28,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:28,712 INFO L225 Difference]: With dead ends: 525 [2024-11-16 06:53:28,712 INFO L226 Difference]: Without dead ends: 483 [2024-11-16 06:53:28,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:53:28,713 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:28,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 560 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:28,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-16 06:53:28,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2024-11-16 06:53:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.0809128630705394) internal successors, (521), 482 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 521 transitions. [2024-11-16 06:53:28,764 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 521 transitions. Word has length 57 [2024-11-16 06:53:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:28,764 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 521 transitions. [2024-11-16 06:53:28,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:28,764 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 521 transitions. [2024-11-16 06:53:28,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-16 06:53:28,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:28,765 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:28,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:28,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-16 06:53:28,966 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:28,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:28,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2145629407, now seen corresponding path program 39 times [2024-11-16 06:53:28,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:28,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077809570] [2024-11-16 06:53:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:28,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:29,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:29,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077809570] [2024-11-16 06:53:29,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077809570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:29,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638878433] [2024-11-16 06:53:29,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:29,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:29,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:29,198 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:29,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-16 06:53:29,270 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-16 06:53:29,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:29,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 06:53:29,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:29,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:29,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638878433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:29,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:29,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-11-16 06:53:29,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266129044] [2024-11-16 06:53:29,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:29,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 06:53:29,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:29,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 06:53:29,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 06:53:29,949 INFO L87 Difference]: Start difference. First operand 483 states and 521 transitions. Second operand has 39 states, 39 states have (on average 2.948717948717949) internal successors, (115), 39 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:30,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:30,361 INFO L93 Difference]: Finished difference Result 683 states and 733 transitions. [2024-11-16 06:53:30,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 06:53:30,361 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.948717948717949) internal successors, (115), 39 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-16 06:53:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:30,363 INFO L225 Difference]: With dead ends: 683 [2024-11-16 06:53:30,363 INFO L226 Difference]: Without dead ends: 623 [2024-11-16 06:53:30,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 90 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=300, Invalid=2250, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 06:53:30,364 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:30,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 746 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:30,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-16 06:53:30,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 537. [2024-11-16 06:53:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.080223880597015) internal successors, (579), 536 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 579 transitions. [2024-11-16 06:53:30,435 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 579 transitions. Word has length 59 [2024-11-16 06:53:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:30,435 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 579 transitions. [2024-11-16 06:53:30,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.948717948717949) internal successors, (115), 39 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 579 transitions. [2024-11-16 06:53:30,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-16 06:53:30,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:30,437 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:30,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:30,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:30,641 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:30,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:30,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1252901117, now seen corresponding path program 40 times [2024-11-16 06:53:30,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:30,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415092933] [2024-11-16 06:53:30,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:30,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:30,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:30,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415092933] [2024-11-16 06:53:30,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415092933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:30,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487050514] [2024-11-16 06:53:30,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:30,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:30,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:30,806 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:30,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-16 06:53:30,875 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:30,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:30,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 06:53:30,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:31,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:31,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487050514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:31,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:31,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-11-16 06:53:31,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3208836] [2024-11-16 06:53:31,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:31,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 06:53:31,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:31,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 06:53:31,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 06:53:31,509 INFO L87 Difference]: Start difference. First operand 537 states and 579 transitions. Second operand has 39 states, 39 states have (on average 2.948717948717949) internal successors, (115), 39 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:32,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:32,020 INFO L93 Difference]: Finished difference Result 572 states and 618 transitions. [2024-11-16 06:53:32,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 06:53:32,020 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.948717948717949) internal successors, (115), 39 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-16 06:53:32,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:32,021 INFO L225 Difference]: With dead ends: 572 [2024-11-16 06:53:32,021 INFO L226 Difference]: Without dead ends: 545 [2024-11-16 06:53:32,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=207, Invalid=2343, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 06:53:32,022 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:32,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 979 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-16 06:53:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2024-11-16 06:53:32,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.0790441176470589) internal successors, (587), 544 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 587 transitions. [2024-11-16 06:53:32,084 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 587 transitions. Word has length 59 [2024-11-16 06:53:32,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:32,084 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 587 transitions. [2024-11-16 06:53:32,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.948717948717949) internal successors, (115), 39 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 587 transitions. [2024-11-16 06:53:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-16 06:53:32,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:32,085 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:32,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:32,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-16 06:53:32,289 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:32,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash 703790813, now seen corresponding path program 41 times [2024-11-16 06:53:32,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:32,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635965919] [2024-11-16 06:53:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:32,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:53:32,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:32,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635965919] [2024-11-16 06:53:32,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635965919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:32,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582512164] [2024-11-16 06:53:32,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:32,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:32,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:32,404 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:32,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-16 06:53:32,475 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-16 06:53:32,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:32,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 06:53:32,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:53:32,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:53:32,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582512164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:32,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:32,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-16 06:53:32,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212080285] [2024-11-16 06:53:32,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:32,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 06:53:32,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:32,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 06:53:32,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-11-16 06:53:32,594 INFO L87 Difference]: Start difference. First operand 545 states and 587 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:32,711 INFO L93 Difference]: Finished difference Result 661 states and 714 transitions. [2024-11-16 06:53:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 06:53:32,712 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-16 06:53:32,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:32,713 INFO L225 Difference]: With dead ends: 661 [2024-11-16 06:53:32,713 INFO L226 Difference]: Without dead ends: 522 [2024-11-16 06:53:32,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 104 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2024-11-16 06:53:32,714 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 46 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:32,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 199 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:53:32,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-16 06:53:32,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2024-11-16 06:53:32,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 1.0748560460652592) internal successors, (560), 521 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 560 transitions. [2024-11-16 06:53:32,774 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 560 transitions. Word has length 59 [2024-11-16 06:53:32,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:32,774 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 560 transitions. [2024-11-16 06:53:32,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 560 transitions. [2024-11-16 06:53:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-16 06:53:32,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:32,775 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:32,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:32,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:32,976 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:32,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:32,977 INFO L85 PathProgramCache]: Analyzing trace with hash 927643327, now seen corresponding path program 42 times [2024-11-16 06:53:32,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:32,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870009397] [2024-11-16 06:53:32,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:32,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:53:33,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:33,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870009397] [2024-11-16 06:53:33,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870009397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:33,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836104213] [2024-11-16 06:53:33,063 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:33,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:33,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:33,064 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:33,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-16 06:53:33,146 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-16 06:53:33,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:33,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 06:53:33,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:53:33,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:53:33,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836104213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:33,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:33,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-16 06:53:33,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921303916] [2024-11-16 06:53:33,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:33,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 06:53:33,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:33,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 06:53:33,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2024-11-16 06:53:33,248 INFO L87 Difference]: Start difference. First operand 522 states and 560 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:33,362 INFO L93 Difference]: Finished difference Result 541 states and 579 transitions. [2024-11-16 06:53:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 06:53:33,363 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-16 06:53:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:33,364 INFO L225 Difference]: With dead ends: 541 [2024-11-16 06:53:33,364 INFO L226 Difference]: Without dead ends: 534 [2024-11-16 06:53:33,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 104 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2024-11-16 06:53:33,366 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 47 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:33,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 213 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:53:33,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-16 06:53:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 524. [2024-11-16 06:53:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 1.0745697896749522) internal successors, (562), 523 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 562 transitions. [2024-11-16 06:53:33,441 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 562 transitions. Word has length 59 [2024-11-16 06:53:33,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:33,441 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 562 transitions. [2024-11-16 06:53:33,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 17 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:33,441 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 562 transitions. [2024-11-16 06:53:33,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 06:53:33,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:33,442 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:33,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:33,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-16 06:53:33,642 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:33,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:33,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1462585218, now seen corresponding path program 43 times [2024-11-16 06:53:33,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:33,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137966385] [2024-11-16 06:53:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:33,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:33,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:33,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137966385] [2024-11-16 06:53:33,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137966385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:33,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910390664] [2024-11-16 06:53:33,973 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:33,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:33,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:33,974 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:33,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-16 06:53:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:34,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-16 06:53:34,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:34,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:34,502 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:34,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910390664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:34,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:34,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 41 [2024-11-16 06:53:34,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822168939] [2024-11-16 06:53:34,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:34,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 06:53:34,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:34,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 06:53:34,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1541, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 06:53:34,503 INFO L87 Difference]: Start difference. First operand 524 states and 562 transitions. Second operand has 41 states, 41 states have (on average 2.341463414634146) internal successors, (96), 41 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:35,044 INFO L93 Difference]: Finished difference Result 604 states and 647 transitions. [2024-11-16 06:53:35,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 06:53:35,045 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.341463414634146) internal successors, (96), 41 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-16 06:53:35,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:35,046 INFO L225 Difference]: With dead ends: 604 [2024-11-16 06:53:35,046 INFO L226 Difference]: Without dead ends: 592 [2024-11-16 06:53:35,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=2700, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 06:53:35,047 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 118 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:35,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1916 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:53:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-16 06:53:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 539. [2024-11-16 06:53:35,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.0743494423791822) internal successors, (578), 538 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 578 transitions. [2024-11-16 06:53:35,124 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 578 transitions. Word has length 61 [2024-11-16 06:53:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:35,124 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 578 transitions. [2024-11-16 06:53:35,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.341463414634146) internal successors, (96), 41 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:35,125 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 578 transitions. [2024-11-16 06:53:35,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 06:53:35,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:35,125 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:35,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-16 06:53:35,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:35,326 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:35,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:35,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1352154690, now seen corresponding path program 44 times [2024-11-16 06:53:35,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:35,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623186946] [2024-11-16 06:53:35,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:35,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:35,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:35,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623186946] [2024-11-16 06:53:35,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623186946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:35,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320706581] [2024-11-16 06:53:35,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:53:35,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:35,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:35,571 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:35,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-16 06:53:35,644 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:53:35,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:35,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-16 06:53:35,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:35,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:36,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320706581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:36,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:36,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 39 [2024-11-16 06:53:36,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091029156] [2024-11-16 06:53:36,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:36,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 06:53:36,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:36,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 06:53:36,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1384, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 06:53:36,033 INFO L87 Difference]: Start difference. First operand 539 states and 578 transitions. Second operand has 39 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 39 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:36,550 INFO L93 Difference]: Finished difference Result 565 states and 603 transitions. [2024-11-16 06:53:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 06:53:36,550 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 39 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-16 06:53:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:36,552 INFO L225 Difference]: With dead ends: 565 [2024-11-16 06:53:36,552 INFO L226 Difference]: Without dead ends: 524 [2024-11-16 06:53:36,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=2390, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 06:53:36,552 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 85 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:36,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1794 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:53:36,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-16 06:53:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2024-11-16 06:53:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 1.0745697896749522) internal successors, (562), 523 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 562 transitions. [2024-11-16 06:53:36,613 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 562 transitions. Word has length 61 [2024-11-16 06:53:36,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:36,614 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 562 transitions. [2024-11-16 06:53:36,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 39 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 562 transitions. [2024-11-16 06:53:36,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 06:53:36,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:36,614 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:36,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:36,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:36,815 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:36,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:36,815 INFO L85 PathProgramCache]: Analyzing trace with hash -114066690, now seen corresponding path program 45 times [2024-11-16 06:53:36,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:36,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832405404] [2024-11-16 06:53:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:36,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:37,076 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:53:37,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:37,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832405404] [2024-11-16 06:53:37,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832405404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:37,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175854753] [2024-11-16 06:53:37,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:37,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:37,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:37,078 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:37,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-16 06:53:37,161 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 06:53:37,162 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:37,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-16 06:53:37,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:53:37,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:53:37,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175854753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:37,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:37,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 37 [2024-11-16 06:53:37,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628289553] [2024-11-16 06:53:37,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:37,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-16 06:53:37,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-16 06:53:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 06:53:37,650 INFO L87 Difference]: Start difference. First operand 524 states and 562 transitions. Second operand has 37 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 37 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:37,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:37,998 INFO L93 Difference]: Finished difference Result 548 states and 585 transitions. [2024-11-16 06:53:37,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 06:53:37,998 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 37 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-16 06:53:37,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:37,999 INFO L225 Difference]: With dead ends: 548 [2024-11-16 06:53:37,999 INFO L226 Difference]: Without dead ends: 505 [2024-11-16 06:53:38,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=2098, Unknown=0, NotChecked=0, Total=2256 [2024-11-16 06:53:38,000 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 63 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:38,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1250 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2024-11-16 06:53:38,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2024-11-16 06:53:38,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.0753968253968254) internal successors, (542), 504 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:38,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 542 transitions. [2024-11-16 06:53:38,068 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 542 transitions. Word has length 61 [2024-11-16 06:53:38,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:38,068 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 542 transitions. [2024-11-16 06:53:38,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 37 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:38,068 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 542 transitions. [2024-11-16 06:53:38,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 06:53:38,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:38,069 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:38,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:38,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-16 06:53:38,272 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:38,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:38,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1739987906, now seen corresponding path program 46 times [2024-11-16 06:53:38,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:38,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573618978] [2024-11-16 06:53:38,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:38,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:53:38,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:38,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573618978] [2024-11-16 06:53:38,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573618978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:38,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260562738] [2024-11-16 06:53:38,488 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:38,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:38,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:38,489 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:38,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-16 06:53:38,562 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:38,562 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:38,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-16 06:53:38,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:53:38,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:53:39,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260562738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:39,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:39,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 36 [2024-11-16 06:53:39,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884064922] [2024-11-16 06:53:39,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:39,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-16 06:53:39,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:39,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-16 06:53:39,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 06:53:39,062 INFO L87 Difference]: Start difference. First operand 505 states and 542 transitions. Second operand has 36 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 36 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:39,443 INFO L93 Difference]: Finished difference Result 545 states and 585 transitions. [2024-11-16 06:53:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 06:53:39,443 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 36 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-16 06:53:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:39,445 INFO L225 Difference]: With dead ends: 545 [2024-11-16 06:53:39,445 INFO L226 Difference]: Without dead ends: 538 [2024-11-16 06:53:39,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=1908, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 06:53:39,445 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 40 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:39,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 846 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:39,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-16 06:53:39,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 526. [2024-11-16 06:53:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.0761904761904761) internal successors, (565), 525 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 565 transitions. [2024-11-16 06:53:39,518 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 565 transitions. Word has length 61 [2024-11-16 06:53:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:39,518 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 565 transitions. [2024-11-16 06:53:39,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.4166666666666665) internal successors, (87), 36 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 565 transitions. [2024-11-16 06:53:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 06:53:39,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:39,519 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:39,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:39,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-16 06:53:39,720 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:39,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:39,720 INFO L85 PathProgramCache]: Analyzing trace with hash 295162815, now seen corresponding path program 47 times [2024-11-16 06:53:39,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:39,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202334897] [2024-11-16 06:53:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:39,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:39,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:39,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202334897] [2024-11-16 06:53:39,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202334897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:39,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462361477] [2024-11-16 06:53:39,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:39,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:39,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:39,994 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:39,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-16 06:53:40,071 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-16 06:53:40,071 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:40,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 06:53:40,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:40,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:41,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462361477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:41,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:41,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 44 [2024-11-16 06:53:41,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563155050] [2024-11-16 06:53:41,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:41,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 06:53:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:41,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 06:53:41,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 06:53:41,004 INFO L87 Difference]: Start difference. First operand 526 states and 565 transitions. Second operand has 44 states, 44 states have (on average 2.840909090909091) internal successors, (125), 44 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:41,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:41,643 INFO L93 Difference]: Finished difference Result 750 states and 801 transitions. [2024-11-16 06:53:41,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 06:53:41,643 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.840909090909091) internal successors, (125), 44 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-16 06:53:41,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:41,645 INFO L225 Difference]: With dead ends: 750 [2024-11-16 06:53:41,645 INFO L226 Difference]: Without dead ends: 686 [2024-11-16 06:53:41,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 94 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=366, Invalid=2940, Unknown=0, NotChecked=0, Total=3306 [2024-11-16 06:53:41,646 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 51 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:41,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 744 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:41,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-11-16 06:53:41,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 582. [2024-11-16 06:53:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 1.0757314974182444) internal successors, (625), 581 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 625 transitions. [2024-11-16 06:53:41,719 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 625 transitions. Word has length 63 [2024-11-16 06:53:41,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:41,720 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 625 transitions. [2024-11-16 06:53:41,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.840909090909091) internal successors, (125), 44 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 625 transitions. [2024-11-16 06:53:41,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 06:53:41,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:41,721 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:41,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-16 06:53:41,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-16 06:53:41,921 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:41,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1376735325, now seen corresponding path program 48 times [2024-11-16 06:53:41,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:41,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494763792] [2024-11-16 06:53:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:41,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:42,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494763792] [2024-11-16 06:53:42,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494763792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47746900] [2024-11-16 06:53:42,170 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:42,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:42,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:42,172 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:42,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-16 06:53:42,253 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-16 06:53:42,253 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:42,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 06:53:42,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:42,737 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:42,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:43,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47746900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:43,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:43,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 44 [2024-11-16 06:53:43,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293956779] [2024-11-16 06:53:43,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:43,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 06:53:43,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:43,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 06:53:43,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1772, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 06:53:43,160 INFO L87 Difference]: Start difference. First operand 582 states and 625 transitions. Second operand has 44 states, 44 states have (on average 2.840909090909091) internal successors, (125), 44 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:43,916 INFO L93 Difference]: Finished difference Result 619 states and 666 transitions. [2024-11-16 06:53:43,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 06:53:43,916 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.840909090909091) internal successors, (125), 44 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-16 06:53:43,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:43,918 INFO L225 Difference]: With dead ends: 619 [2024-11-16 06:53:43,918 INFO L226 Difference]: Without dead ends: 590 [2024-11-16 06:53:43,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 93 SyntacticMatches, 8 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=234, Invalid=2958, Unknown=0, NotChecked=0, Total=3192 [2024-11-16 06:53:43,919 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:43,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1384 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:53:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-16 06:53:43,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2024-11-16 06:53:43,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 1.0747028862478778) internal successors, (633), 589 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 633 transitions. [2024-11-16 06:53:43,996 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 633 transitions. Word has length 63 [2024-11-16 06:53:43,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:43,997 INFO L471 AbstractCegarLoop]: Abstraction has 590 states and 633 transitions. [2024-11-16 06:53:43,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.840909090909091) internal successors, (125), 44 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 633 transitions. [2024-11-16 06:53:43,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 06:53:43,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:43,997 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:44,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-16 06:53:44,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-16 06:53:44,198 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:44,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:44,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1238127107, now seen corresponding path program 49 times [2024-11-16 06:53:44,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:44,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979618895] [2024-11-16 06:53:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:44,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:53:44,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:44,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979618895] [2024-11-16 06:53:44,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979618895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:44,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371387108] [2024-11-16 06:53:44,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:44,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:44,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:44,309 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:44,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-16 06:53:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:44,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 06:53:44,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:53:44,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:53:44,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371387108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:44,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:44,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-11-16 06:53:44,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977367291] [2024-11-16 06:53:44,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:44,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 06:53:44,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:44,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 06:53:44,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-16 06:53:44,518 INFO L87 Difference]: Start difference. First operand 590 states and 633 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:44,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:44,722 INFO L93 Difference]: Finished difference Result 687 states and 741 transitions. [2024-11-16 06:53:44,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 06:53:44,722 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-16 06:53:44,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:44,724 INFO L225 Difference]: With dead ends: 687 [2024-11-16 06:53:44,724 INFO L226 Difference]: Without dead ends: 663 [2024-11-16 06:53:44,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 111 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2024-11-16 06:53:44,725 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 32 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:44,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 380 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:44,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-11-16 06:53:44,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 645. [2024-11-16 06:53:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 1.0822981366459627) internal successors, (697), 644 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 697 transitions. [2024-11-16 06:53:44,809 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 697 transitions. Word has length 63 [2024-11-16 06:53:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:44,809 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 697 transitions. [2024-11-16 06:53:44,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 697 transitions. [2024-11-16 06:53:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 06:53:44,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:44,810 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:44,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:45,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-16 06:53:45,015 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:45,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:45,015 INFO L85 PathProgramCache]: Analyzing trace with hash -864225953, now seen corresponding path program 50 times [2024-11-16 06:53:45,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:45,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837589119] [2024-11-16 06:53:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:45,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:53:45,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:45,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837589119] [2024-11-16 06:53:45,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837589119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:45,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578216819] [2024-11-16 06:53:45,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:53:45,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:45,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:45,091 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:45,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-16 06:53:45,166 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:53:45,166 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:45,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 06:53:45,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:53:45,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 06:53:45,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578216819] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:45,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:45,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-11-16 06:53:45,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496063062] [2024-11-16 06:53:45,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:45,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 06:53:45,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:45,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 06:53:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-16 06:53:45,367 INFO L87 Difference]: Start difference. First operand 645 states and 697 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:45,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:45,598 INFO L93 Difference]: Finished difference Result 978 states and 1073 transitions. [2024-11-16 06:53:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 06:53:45,598 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-16 06:53:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:45,600 INFO L225 Difference]: With dead ends: 978 [2024-11-16 06:53:45,600 INFO L226 Difference]: Without dead ends: 753 [2024-11-16 06:53:45,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 111 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2024-11-16 06:53:45,601 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 29 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:45,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 214 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-16 06:53:45,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2024-11-16 06:53:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.0824468085106382) internal successors, (814), 752 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 814 transitions. [2024-11-16 06:53:45,705 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 814 transitions. Word has length 63 [2024-11-16 06:53:45,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:45,705 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 814 transitions. [2024-11-16 06:53:45,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:45,705 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 814 transitions. [2024-11-16 06:53:45,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 06:53:45,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:45,706 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:45,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:45,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-16 06:53:45,907 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:45,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:45,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1577971678, now seen corresponding path program 51 times [2024-11-16 06:53:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:45,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057466886] [2024-11-16 06:53:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:45,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:46,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:46,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057466886] [2024-11-16 06:53:46,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057466886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:46,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723442806] [2024-11-16 06:53:46,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:46,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:46,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:46,290 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:46,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-16 06:53:46,372 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-16 06:53:46,373 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:46,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-16 06:53:46,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:46,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:53:46,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723442806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:46,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:46,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 44 [2024-11-16 06:53:46,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636098010] [2024-11-16 06:53:46,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:46,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 06:53:46,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:46,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 06:53:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1786, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 06:53:46,862 INFO L87 Difference]: Start difference. First operand 753 states and 814 transitions. Second operand has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 44 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:47,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:47,544 INFO L93 Difference]: Finished difference Result 848 states and 915 transitions. [2024-11-16 06:53:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-16 06:53:47,545 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 44 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-16 06:53:47,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:47,547 INFO L225 Difference]: With dead ends: 848 [2024-11-16 06:53:47,547 INFO L226 Difference]: Without dead ends: 836 [2024-11-16 06:53:47,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=3133, Unknown=0, NotChecked=0, Total=3306 [2024-11-16 06:53:47,547 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 132 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:47,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 2606 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 06:53:47,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-11-16 06:53:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 768. [2024-11-16 06:53:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.0821382007822686) internal successors, (830), 767 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 830 transitions. [2024-11-16 06:53:47,651 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 830 transitions. Word has length 65 [2024-11-16 06:53:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:47,651 INFO L471 AbstractCegarLoop]: Abstraction has 768 states and 830 transitions. [2024-11-16 06:53:47,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2954545454545454) internal successors, (101), 44 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:47,651 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 830 transitions. [2024-11-16 06:53:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 06:53:47,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:47,652 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:47,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-16 06:53:47,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:47,853 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:47,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:47,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1363263330, now seen corresponding path program 52 times [2024-11-16 06:53:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:47,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419215107] [2024-11-16 06:53:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:47,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:48,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:48,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419215107] [2024-11-16 06:53:48,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419215107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:48,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834152444] [2024-11-16 06:53:48,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:48,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:48,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:48,223 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:48,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-16 06:53:48,310 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:48,310 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:48,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-16 06:53:48,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:48,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:53:48,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834152444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:48,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:48,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 42 [2024-11-16 06:53:48,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752342317] [2024-11-16 06:53:48,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:48,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-16 06:53:48,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:48,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-16 06:53:48,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1617, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 06:53:48,987 INFO L87 Difference]: Start difference. First operand 768 states and 830 transitions. Second operand has 42 states, 42 states have (on average 2.357142857142857) internal successors, (99), 42 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:49,571 INFO L93 Difference]: Finished difference Result 796 states and 857 transitions. [2024-11-16 06:53:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 06:53:49,572 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.357142857142857) internal successors, (99), 42 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-16 06:53:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:49,573 INFO L225 Difference]: With dead ends: 796 [2024-11-16 06:53:49,573 INFO L226 Difference]: Without dead ends: 753 [2024-11-16 06:53:49,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=2799, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 06:53:49,574 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 99 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:49,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1973 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:53:49,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-16 06:53:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2024-11-16 06:53:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.0824468085106382) internal successors, (814), 752 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 814 transitions. [2024-11-16 06:53:49,686 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 814 transitions. Word has length 65 [2024-11-16 06:53:49,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:49,686 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 814 transitions. [2024-11-16 06:53:49,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.357142857142857) internal successors, (99), 42 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 814 transitions. [2024-11-16 06:53:49,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 06:53:49,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:49,687 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:49,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:49,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:49,888 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:49,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:49,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1625907550, now seen corresponding path program 53 times [2024-11-16 06:53:49,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:49,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869744197] [2024-11-16 06:53:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:49,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:53:50,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:50,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869744197] [2024-11-16 06:53:50,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869744197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:50,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389410413] [2024-11-16 06:53:50,168 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:50,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:50,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:50,169 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:50,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-16 06:53:50,249 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-16 06:53:50,249 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:50,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-16 06:53:50,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:53:50,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:53:50,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389410413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:50,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:50,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 40 [2024-11-16 06:53:50,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846469796] [2024-11-16 06:53:50,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:50,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-16 06:53:50,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:50,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-16 06:53:50,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1456, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 06:53:50,686 INFO L87 Difference]: Start difference. First operand 753 states and 814 transitions. Second operand has 40 states, 40 states have (on average 2.375) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:51,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:51,132 INFO L93 Difference]: Finished difference Result 779 states and 839 transitions. [2024-11-16 06:53:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 06:53:51,132 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.375) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-16 06:53:51,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:51,134 INFO L225 Difference]: With dead ends: 779 [2024-11-16 06:53:51,134 INFO L226 Difference]: Without dead ends: 734 [2024-11-16 06:53:51,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=2483, Unknown=0, NotChecked=0, Total=2652 [2024-11-16 06:53:51,134 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 73 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:51,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 1468 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:51,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-11-16 06:53:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 734. [2024-11-16 06:53:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.0832196452933152) internal successors, (794), 733 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 794 transitions. [2024-11-16 06:53:51,235 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 794 transitions. Word has length 65 [2024-11-16 06:53:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:51,235 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 794 transitions. [2024-11-16 06:53:51,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.375) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 794 transitions. [2024-11-16 06:53:51,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 06:53:51,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:51,236 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:51,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-16 06:53:51,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:51,441 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:51,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:51,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1631286078, now seen corresponding path program 54 times [2024-11-16 06:53:51,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:51,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128560995] [2024-11-16 06:53:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:51,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 42 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-16 06:53:51,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:51,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128560995] [2024-11-16 06:53:51,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128560995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:51,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237492476] [2024-11-16 06:53:51,647 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:51,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:51,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:51,649 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:51,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-16 06:53:51,729 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-16 06:53:51,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:51,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 06:53:51,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-16 06:53:51,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-16 06:53:52,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237492476] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:52,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:52,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2024-11-16 06:53:52,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239554813] [2024-11-16 06:53:52,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:52,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 06:53:52,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:52,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 06:53:52,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:53:52,151 INFO L87 Difference]: Start difference. First operand 734 states and 794 transitions. Second operand has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:52,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:52,473 INFO L93 Difference]: Finished difference Result 905 states and 981 transitions. [2024-11-16 06:53:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 06:53:52,474 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-16 06:53:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:52,476 INFO L225 Difference]: With dead ends: 905 [2024-11-16 06:53:52,476 INFO L226 Difference]: Without dead ends: 807 [2024-11-16 06:53:52,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 06:53:52,477 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:52,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 496 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:52,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-11-16 06:53:52,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-11-16 06:53:52,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 806 states have (on average 1.0744416873449132) internal successors, (866), 806 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:52,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 866 transitions. [2024-11-16 06:53:52,594 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 866 transitions. Word has length 65 [2024-11-16 06:53:52,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:52,594 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 866 transitions. [2024-11-16 06:53:52,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:52,595 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 866 transitions. [2024-11-16 06:53:52,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 06:53:52,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:52,596 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:52,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:52,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:52,796 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:52,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:52,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1541713378, now seen corresponding path program 55 times [2024-11-16 06:53:52,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:52,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437010008] [2024-11-16 06:53:52,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:52,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:53:53,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:53,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437010008] [2024-11-16 06:53:53,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437010008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:53,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434822966] [2024-11-16 06:53:53,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:53,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:53,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:53,015 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:53,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-16 06:53:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:53,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-16 06:53:53,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:53:53,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:53:53,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434822966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:53,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:53,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 38 [2024-11-16 06:53:53,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350001318] [2024-11-16 06:53:53,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:53,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-16 06:53:53,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:53,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-16 06:53:53,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1303, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 06:53:53,511 INFO L87 Difference]: Start difference. First operand 807 states and 866 transitions. Second operand has 38 states, 38 states have (on average 2.3947368421052633) internal successors, (91), 38 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:53,938 INFO L93 Difference]: Finished difference Result 868 states and 931 transitions. [2024-11-16 06:53:53,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 06:53:53,938 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3947368421052633) internal successors, (91), 38 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-16 06:53:53,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:53,940 INFO L225 Difference]: With dead ends: 868 [2024-11-16 06:53:53,941 INFO L226 Difference]: Without dead ends: 821 [2024-11-16 06:53:53,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=2185, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 06:53:53,941 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 61 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:53,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1114 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:53,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-16 06:53:54,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 802. [2024-11-16 06:53:54,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 1.076154806491885) internal successors, (862), 801 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 862 transitions. [2024-11-16 06:53:54,056 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 862 transitions. Word has length 65 [2024-11-16 06:53:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:54,056 INFO L471 AbstractCegarLoop]: Abstraction has 802 states and 862 transitions. [2024-11-16 06:53:54,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3947368421052633) internal successors, (91), 38 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 862 transitions. [2024-11-16 06:53:54,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 06:53:54,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:54,057 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:54,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-16 06:53:54,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-11-16 06:53:54,258 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:54,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:54,258 INFO L85 PathProgramCache]: Analyzing trace with hash 507337150, now seen corresponding path program 56 times [2024-11-16 06:53:54,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:54,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100799746] [2024-11-16 06:53:54,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:54,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-16 06:53:54,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:54,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100799746] [2024-11-16 06:53:54,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100799746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:54,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103239589] [2024-11-16 06:53:54,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:53:54,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:54,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:54,429 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:54,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-16 06:53:54,515 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:53:54,515 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:54,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 06:53:54,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-16 06:53:54,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-16 06:53:55,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103239589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:55,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:55,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2024-11-16 06:53:55,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919152725] [2024-11-16 06:53:55,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:55,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 06:53:55,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:55,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 06:53:55,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:53:55,027 INFO L87 Difference]: Start difference. First operand 802 states and 862 transitions. Second operand has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:55,449 INFO L93 Difference]: Finished difference Result 854 states and 914 transitions. [2024-11-16 06:53:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 06:53:55,450 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-16 06:53:55,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:55,452 INFO L225 Difference]: With dead ends: 854 [2024-11-16 06:53:55,452 INFO L226 Difference]: Without dead ends: 802 [2024-11-16 06:53:55,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 109 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 06:53:55,452 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 1 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:55,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 714 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:55,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2024-11-16 06:53:55,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2024-11-16 06:53:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 1.066167290886392) internal successors, (854), 801 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 854 transitions. [2024-11-16 06:53:55,567 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 854 transitions. Word has length 65 [2024-11-16 06:53:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:55,567 INFO L471 AbstractCegarLoop]: Abstraction has 802 states and 854 transitions. [2024-11-16 06:53:55,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.8333333333333335) internal successors, (85), 30 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:55,567 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 854 transitions. [2024-11-16 06:53:55,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 06:53:55,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:55,568 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:55,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-16 06:53:55,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-16 06:53:55,773 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:55,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:55,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1692578591, now seen corresponding path program 57 times [2024-11-16 06:53:55,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:55,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041513122] [2024-11-16 06:53:55,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:55,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 144 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:56,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:56,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041513122] [2024-11-16 06:53:56,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041513122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:56,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107701498] [2024-11-16 06:53:56,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:56,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:56,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:56,080 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:56,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-16 06:53:56,167 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-16 06:53:56,167 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:56,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-16 06:53:56,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 144 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:56,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 144 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:57,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107701498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:57,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:57,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-11-16 06:53:57,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363224366] [2024-11-16 06:53:57,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:57,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 06:53:57,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:57,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 06:53:57,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=2210, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 06:53:57,223 INFO L87 Difference]: Start difference. First operand 802 states and 854 transitions. Second operand has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:58,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:58,088 INFO L93 Difference]: Finished difference Result 1150 states and 1217 transitions. [2024-11-16 06:53:58,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 06:53:58,088 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-16 06:53:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:58,091 INFO L225 Difference]: With dead ends: 1150 [2024-11-16 06:53:58,091 INFO L226 Difference]: Without dead ends: 1079 [2024-11-16 06:53:58,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 98 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=450, Invalid=3710, Unknown=0, NotChecked=0, Total=4160 [2024-11-16 06:53:58,092 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 39 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:58,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 969 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:53:58,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-16 06:53:58,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 887. [2024-11-16 06:53:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 1.0654627539503385) internal successors, (944), 886 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 944 transitions. [2024-11-16 06:53:58,232 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 944 transitions. Word has length 67 [2024-11-16 06:53:58,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:58,232 INFO L471 AbstractCegarLoop]: Abstraction has 887 states and 944 transitions. [2024-11-16 06:53:58,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:58,232 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 944 transitions. [2024-11-16 06:53:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 06:53:58,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:58,234 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:58,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:58,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:58,434 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:58,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:58,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1701675069, now seen corresponding path program 58 times [2024-11-16 06:53:58,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:58,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756840303] [2024-11-16 06:53:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:58,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:58,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:58,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756840303] [2024-11-16 06:53:58,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756840303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:58,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39272125] [2024-11-16 06:53:58,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:58,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:58,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:58,722 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:58,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-16 06:53:58,800 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:58,800 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:58,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-16 06:53:58,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:59,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 144 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:53:59,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39272125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:59,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:59,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 50 [2024-11-16 06:53:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589520913] [2024-11-16 06:53:59,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:59,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-16 06:53:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:59,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-16 06:53:59,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2303, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 06:53:59,746 INFO L87 Difference]: Start difference. First operand 887 states and 944 transitions. Second operand has 50 states, 50 states have (on average 2.74) internal successors, (137), 50 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:00,850 INFO L93 Difference]: Finished difference Result 929 states and 991 transitions. [2024-11-16 06:54:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 06:54:00,851 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.74) internal successors, (137), 50 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-16 06:54:00,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:00,853 INFO L225 Difference]: With dead ends: 929 [2024-11-16 06:54:00,853 INFO L226 Difference]: Without dead ends: 897 [2024-11-16 06:54:00,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 97 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=286, Invalid=3874, Unknown=0, NotChecked=0, Total=4160 [2024-11-16 06:54:00,854 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 1 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:00,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1333 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 06:54:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2024-11-16 06:54:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 897. [2024-11-16 06:54:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 1.0647321428571428) internal successors, (954), 896 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 954 transitions. [2024-11-16 06:54:01,001 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 954 transitions. Word has length 67 [2024-11-16 06:54:01,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:01,001 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 954 transitions. [2024-11-16 06:54:01,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.74) internal successors, (137), 50 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:01,001 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 954 transitions. [2024-11-16 06:54:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 06:54:01,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:01,002 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:01,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-16 06:54:01,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:01,206 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:01,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1148468189, now seen corresponding path program 59 times [2024-11-16 06:54:01,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:01,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419635519] [2024-11-16 06:54:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:01,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 06:54:01,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:01,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419635519] [2024-11-16 06:54:01,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419635519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:01,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041874131] [2024-11-16 06:54:01,297 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:54:01,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:01,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:01,298 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:01,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-16 06:54:01,378 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-16 06:54:01,378 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:01,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 06:54:01,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 06:54:01,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 06:54:01,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041874131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:01,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:01,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-16 06:54:01,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765459172] [2024-11-16 06:54:01,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:01,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 06:54:01,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 06:54:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2024-11-16 06:54:01,531 INFO L87 Difference]: Start difference. First operand 897 states and 954 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:01,794 INFO L93 Difference]: Finished difference Result 1065 states and 1137 transitions. [2024-11-16 06:54:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 06:54:01,794 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-16 06:54:01,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:01,796 INFO L225 Difference]: With dead ends: 1065 [2024-11-16 06:54:01,796 INFO L226 Difference]: Without dead ends: 874 [2024-11-16 06:54:01,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 117 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:54:01,797 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 51 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:01,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 390 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:54:01,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-11-16 06:54:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 874. [2024-11-16 06:54:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.0618556701030928) internal successors, (927), 873 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:01,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 927 transitions. [2024-11-16 06:54:01,930 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 927 transitions. Word has length 67 [2024-11-16 06:54:01,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:01,930 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 927 transitions. [2024-11-16 06:54:01,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:01,930 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 927 transitions. [2024-11-16 06:54:01,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 06:54:01,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:01,931 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:01,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-16 06:54:02,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-16 06:54:02,135 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:02,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:02,136 INFO L85 PathProgramCache]: Analyzing trace with hash 876616511, now seen corresponding path program 60 times [2024-11-16 06:54:02,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:02,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740239283] [2024-11-16 06:54:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:02,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 06:54:02,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:02,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740239283] [2024-11-16 06:54:02,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740239283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:02,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502930703] [2024-11-16 06:54:02,222 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:54:02,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:02,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:02,224 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:02,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-16 06:54:02,312 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-16 06:54:02,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:02,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 06:54:02,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 06:54:02,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:02,513 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 06:54:02,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502930703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:02,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:02,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-16 06:54:02,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144537690] [2024-11-16 06:54:02,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:02,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 06:54:02,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:02,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 06:54:02,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2024-11-16 06:54:02,516 INFO L87 Difference]: Start difference. First operand 874 states and 927 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:02,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:02,771 INFO L93 Difference]: Finished difference Result 901 states and 954 transitions. [2024-11-16 06:54:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 06:54:02,771 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-16 06:54:02,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:02,773 INFO L225 Difference]: With dead ends: 901 [2024-11-16 06:54:02,773 INFO L226 Difference]: Without dead ends: 894 [2024-11-16 06:54:02,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 117 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=304, Invalid=566, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:54:02,774 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 57 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:02,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 266 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:54:02,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2024-11-16 06:54:02,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 876. [2024-11-16 06:54:02,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 1.0617142857142856) internal successors, (929), 875 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 929 transitions. [2024-11-16 06:54:02,917 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 929 transitions. Word has length 67 [2024-11-16 06:54:02,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:02,917 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 929 transitions. [2024-11-16 06:54:02,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:02,917 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 929 transitions. [2024-11-16 06:54:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 06:54:02,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:02,918 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:02,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-16 06:54:03,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-16 06:54:03,122 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:03,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:03,123 INFO L85 PathProgramCache]: Analyzing trace with hash 312453054, now seen corresponding path program 61 times [2024-11-16 06:54:03,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:03,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935719277] [2024-11-16 06:54:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:03,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:54:03,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:03,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935719277] [2024-11-16 06:54:03,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935719277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:03,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777280943] [2024-11-16 06:54:03,514 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:54:03,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:03,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:03,516 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:03,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-16 06:54:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:03,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-16 06:54:03,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:04,106 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:54:04,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:54:04,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777280943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:04,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:04,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 47 [2024-11-16 06:54:04,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561783284] [2024-11-16 06:54:04,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:04,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-16 06:54:04,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:04,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-16 06:54:04,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=2049, Unknown=0, NotChecked=0, Total=2162 [2024-11-16 06:54:04,267 INFO L87 Difference]: Start difference. First operand 876 states and 929 transitions. Second operand has 47 states, 47 states have (on average 2.297872340425532) internal successors, (108), 47 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:05,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:05,211 INFO L93 Difference]: Finished difference Result 977 states and 1036 transitions. [2024-11-16 06:54:05,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 06:54:05,211 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.297872340425532) internal successors, (108), 47 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 06:54:05,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:05,214 INFO L225 Difference]: With dead ends: 977 [2024-11-16 06:54:05,214 INFO L226 Difference]: Without dead ends: 965 [2024-11-16 06:54:05,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=3598, Unknown=0, NotChecked=0, Total=3782 [2024-11-16 06:54:05,215 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 140 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:05,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 3299 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 06:54:05,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2024-11-16 06:54:05,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 891. [2024-11-16 06:54:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 890 states have (on average 1.0617977528089888) internal successors, (945), 890 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:05,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 945 transitions. [2024-11-16 06:54:05,380 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 945 transitions. Word has length 69 [2024-11-16 06:54:05,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:05,381 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 945 transitions. [2024-11-16 06:54:05,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.297872340425532) internal successors, (108), 47 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:05,381 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 945 transitions. [2024-11-16 06:54:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 06:54:05,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:05,382 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:05,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:05,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:05,582 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:05,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:05,582 INFO L85 PathProgramCache]: Analyzing trace with hash -188784642, now seen corresponding path program 62 times [2024-11-16 06:54:05,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:05,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760404656] [2024-11-16 06:54:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:05,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:06,047 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:54:06,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:06,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760404656] [2024-11-16 06:54:06,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760404656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:06,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625564923] [2024-11-16 06:54:06,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:54:06,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:06,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:06,049 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:06,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-16 06:54:06,139 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:54:06,139 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:06,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-16 06:54:06,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:06,530 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:54:06,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:54:06,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625564923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:06,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:06,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 45 [2024-11-16 06:54:06,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644641378] [2024-11-16 06:54:06,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:06,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-16 06:54:06,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:06,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-16 06:54:06,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1868, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 06:54:06,697 INFO L87 Difference]: Start difference. First operand 891 states and 945 transitions. Second operand has 45 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 45 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:07,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:07,414 INFO L93 Difference]: Finished difference Result 921 states and 974 transitions. [2024-11-16 06:54:07,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-16 06:54:07,414 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 45 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 06:54:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:07,417 INFO L225 Difference]: With dead ends: 921 [2024-11-16 06:54:07,417 INFO L226 Difference]: Without dead ends: 876 [2024-11-16 06:54:07,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=182, Invalid=3240, Unknown=0, NotChecked=0, Total=3422 [2024-11-16 06:54:07,418 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 105 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:07,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2303 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 06:54:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-11-16 06:54:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2024-11-16 06:54:07,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 1.0617142857142856) internal successors, (929), 875 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:07,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 929 transitions. [2024-11-16 06:54:07,663 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 929 transitions. Word has length 69 [2024-11-16 06:54:07,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:07,663 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 929 transitions. [2024-11-16 06:54:07,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 45 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:07,664 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 929 transitions. [2024-11-16 06:54:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 06:54:07,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:07,665 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:07,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:07,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2024-11-16 06:54:07,866 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:07,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:07,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2014709822, now seen corresponding path program 63 times [2024-11-16 06:54:07,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:07,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919978976] [2024-11-16 06:54:07,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:07,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:54:08,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:08,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919978976] [2024-11-16 06:54:08,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919978976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:08,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394426225] [2024-11-16 06:54:08,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:54:08,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:08,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:08,197 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:08,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-16 06:54:08,285 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-16 06:54:08,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:08,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-16 06:54:08,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:54:08,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:54:08,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394426225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:08,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:08,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 43 [2024-11-16 06:54:08,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119721031] [2024-11-16 06:54:08,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:08,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-16 06:54:08,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:08,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-16 06:54:08,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1695, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 06:54:08,858 INFO L87 Difference]: Start difference. First operand 876 states and 929 transitions. Second operand has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:09,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:09,547 INFO L93 Difference]: Finished difference Result 904 states and 956 transitions. [2024-11-16 06:54:09,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 06:54:09,547 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 06:54:09,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:09,550 INFO L225 Difference]: With dead ends: 904 [2024-11-16 06:54:09,550 INFO L226 Difference]: Without dead ends: 857 [2024-11-16 06:54:09,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=180, Invalid=2900, Unknown=0, NotChecked=0, Total=3080 [2024-11-16 06:54:09,551 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 83 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:09,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1997 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 06:54:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-11-16 06:54:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 857. [2024-11-16 06:54:09,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 1.0619158878504673) internal successors, (909), 856 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 909 transitions. [2024-11-16 06:54:09,691 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 909 transitions. Word has length 69 [2024-11-16 06:54:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:09,691 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 909 transitions. [2024-11-16 06:54:09,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 43 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 909 transitions. [2024-11-16 06:54:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 06:54:09,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:09,692 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:09,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:09,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:09,893 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:09,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash -341335938, now seen corresponding path program 64 times [2024-11-16 06:54:09,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:09,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829598047] [2024-11-16 06:54:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:09,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:54:10,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:10,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829598047] [2024-11-16 06:54:10,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829598047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:10,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046525642] [2024-11-16 06:54:10,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:54:10,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:10,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:10,193 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:10,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-16 06:54:10,281 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:54:10,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:10,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-16 06:54:10,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:54:10,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:54:10,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046525642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:10,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:10,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 41 [2024-11-16 06:54:10,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235809358] [2024-11-16 06:54:10,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:10,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 06:54:10,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:10,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 06:54:10,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 06:54:10,800 INFO L87 Difference]: Start difference. First operand 857 states and 909 transitions. Second operand has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:11,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:11,448 INFO L93 Difference]: Finished difference Result 883 states and 934 transitions. [2024-11-16 06:54:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 06:54:11,448 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 06:54:11,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:11,453 INFO L225 Difference]: With dead ends: 883 [2024-11-16 06:54:11,453 INFO L226 Difference]: Without dead ends: 834 [2024-11-16 06:54:11,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=2578, Unknown=0, NotChecked=0, Total=2756 [2024-11-16 06:54:11,454 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 59 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:11,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1626 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:54:11,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2024-11-16 06:54:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2024-11-16 06:54:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 833 states have (on average 1.0624249699879953) internal successors, (885), 833 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 885 transitions. [2024-11-16 06:54:11,588 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 885 transitions. Word has length 69 [2024-11-16 06:54:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:11,588 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 885 transitions. [2024-11-16 06:54:11,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 885 transitions. [2024-11-16 06:54:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 06:54:11,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:11,589 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:11,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-16 06:54:11,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:11,790 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:11,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash 762849470, now seen corresponding path program 65 times [2024-11-16 06:54:11,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:11,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027972369] [2024-11-16 06:54:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:11,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 06:54:12,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027972369] [2024-11-16 06:54:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027972369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195506580] [2024-11-16 06:54:12,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:54:12,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:12,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:12,056 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:12,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-16 06:54:12,140 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-16 06:54:12,140 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:12,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-16 06:54:12,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 06:54:12,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 06:54:12,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195506580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:12,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:12,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 22] total 44 [2024-11-16 06:54:12,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546708087] [2024-11-16 06:54:12,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:12,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 06:54:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:12,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 06:54:12,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1763, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 06:54:12,829 INFO L87 Difference]: Start difference. First operand 834 states and 885 transitions. Second operand has 44 states, 44 states have (on average 2.3636363636363638) internal successors, (104), 44 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:13,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:13,381 INFO L93 Difference]: Finished difference Result 878 states and 932 transitions. [2024-11-16 06:54:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 06:54:13,381 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.3636363636363638) internal successors, (104), 44 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 06:54:13,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:13,389 INFO L225 Difference]: With dead ends: 878 [2024-11-16 06:54:13,389 INFO L226 Difference]: Without dead ends: 871 [2024-11-16 06:54:13,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=196, Invalid=2774, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 06:54:13,390 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 40 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:13,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1272 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:54:13,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2024-11-16 06:54:13,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 857. [2024-11-16 06:54:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 1.0630841121495327) internal successors, (910), 856 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:13,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 910 transitions. [2024-11-16 06:54:13,537 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 910 transitions. Word has length 69 [2024-11-16 06:54:13,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:13,538 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 910 transitions. [2024-11-16 06:54:13,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.3636363636363638) internal successors, (104), 44 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:13,538 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 910 transitions. [2024-11-16 06:54:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 06:54:13,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:13,539 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:13,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-11-16 06:54:13,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2024-11-16 06:54:13,740 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:13,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:13,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1004925695, now seen corresponding path program 66 times [2024-11-16 06:54:13,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:13,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44581802] [2024-11-16 06:54:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:13,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 20 proven. 180 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:54:14,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:14,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44581802] [2024-11-16 06:54:14,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44581802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:14,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368779898] [2024-11-16 06:54:14,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:54:14,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:14,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:14,086 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:14,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-11-16 06:54:14,175 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-16 06:54:14,176 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:14,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 06:54:14,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 20 proven. 180 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:54:14,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 20 proven. 180 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:54:15,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368779898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:15,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:15,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2024-11-16 06:54:15,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002003544] [2024-11-16 06:54:15,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:15,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-16 06:54:15,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:15,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-16 06:54:15,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2706, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 06:54:15,403 INFO L87 Difference]: Start difference. First operand 857 states and 910 transitions. Second operand has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 54 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:16,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:16,330 INFO L93 Difference]: Finished difference Result 1243 states and 1311 transitions. [2024-11-16 06:54:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 06:54:16,330 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 54 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 06:54:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:16,332 INFO L225 Difference]: With dead ends: 1243 [2024-11-16 06:54:16,332 INFO L226 Difference]: Without dead ends: 1168 [2024-11-16 06:54:16,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 102 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=534, Invalid=4578, Unknown=0, NotChecked=0, Total=5112 [2024-11-16 06:54:16,333 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 48 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:16,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1025 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:54:16,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-16 06:54:16,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 944. [2024-11-16 06:54:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 943 states have (on average 1.0625662778366913) internal successors, (1002), 943 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1002 transitions. [2024-11-16 06:54:16,489 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1002 transitions. Word has length 71 [2024-11-16 06:54:16,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:16,490 INFO L471 AbstractCegarLoop]: Abstraction has 944 states and 1002 transitions. [2024-11-16 06:54:16,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 54 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1002 transitions. [2024-11-16 06:54:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 06:54:16,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:16,491 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:16,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-11-16 06:54:16,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:16,695 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:16,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:16,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1156706461, now seen corresponding path program 67 times [2024-11-16 06:54:16,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:16,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984824120] [2024-11-16 06:54:16,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:16,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:54:17,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:17,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984824120] [2024-11-16 06:54:17,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984824120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:17,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502383860] [2024-11-16 06:54:17,031 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:54:17,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:17,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:17,032 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:17,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-16 06:54:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:17,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 06:54:17,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:54:17,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 20 proven. 180 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:54:18,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502383860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:18,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:18,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2024-11-16 06:54:18,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808983267] [2024-11-16 06:54:18,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:18,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-16 06:54:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:18,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-16 06:54:18,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2714, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 06:54:18,381 INFO L87 Difference]: Start difference. First operand 944 states and 1002 transitions. Second operand has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 54 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:19,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:19,645 INFO L93 Difference]: Finished difference Result 988 states and 1051 transitions. [2024-11-16 06:54:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 06:54:19,645 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 54 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 06:54:19,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:19,647 INFO L225 Difference]: With dead ends: 988 [2024-11-16 06:54:19,647 INFO L226 Difference]: Without dead ends: 954 [2024-11-16 06:54:19,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 101 SyntacticMatches, 10 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=314, Invalid=4656, Unknown=0, NotChecked=0, Total=4970 [2024-11-16 06:54:19,648 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:19,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1739 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 06:54:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2024-11-16 06:54:19,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 954. [2024-11-16 06:54:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 953 states have (on average 1.061909758656873) internal successors, (1012), 953 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:19,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1012 transitions. [2024-11-16 06:54:19,810 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1012 transitions. Word has length 71 [2024-11-16 06:54:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:19,810 INFO L471 AbstractCegarLoop]: Abstraction has 954 states and 1012 transitions. [2024-11-16 06:54:19,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 54 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1012 transitions. [2024-11-16 06:54:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 06:54:19,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:19,811 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:19,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-11-16 06:54:20,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:20,012 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:20,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:20,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1193094531, now seen corresponding path program 68 times [2024-11-16 06:54:20,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:20,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407244211] [2024-11-16 06:54:20,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:20,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 40 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 06:54:20,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:20,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407244211] [2024-11-16 06:54:20,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407244211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:20,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477109040] [2024-11-16 06:54:20,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:54:20,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:20,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:20,116 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:20,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-11-16 06:54:20,202 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:54:20,202 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:20,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 06:54:20,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 06:54:20,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 06:54:20,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477109040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:20,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:20,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2024-11-16 06:54:20,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251184076] [2024-11-16 06:54:20,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:20,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 06:54:20,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:20,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 06:54:20,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-11-16 06:54:20,398 INFO L87 Difference]: Start difference. First operand 954 states and 1012 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:20,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:20,743 INFO L93 Difference]: Finished difference Result 1075 states and 1146 transitions. [2024-11-16 06:54:20,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 06:54:20,743 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 06:54:20,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:20,745 INFO L225 Difference]: With dead ends: 1075 [2024-11-16 06:54:20,745 INFO L226 Difference]: Without dead ends: 1049 [2024-11-16 06:54:20,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 124 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 06:54:20,746 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 41 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:20,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 353 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:54:20,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2024-11-16 06:54:20,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1021. [2024-11-16 06:54:20,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1020 states have (on average 1.0686274509803921) internal successors, (1090), 1020 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1090 transitions. [2024-11-16 06:54:20,958 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1090 transitions. Word has length 71 [2024-11-16 06:54:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:20,958 INFO L471 AbstractCegarLoop]: Abstraction has 1021 states and 1090 transitions. [2024-11-16 06:54:20,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1090 transitions. [2024-11-16 06:54:20,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 06:54:20,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:20,959 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:20,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:21,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:21,170 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:21,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash -449552033, now seen corresponding path program 69 times [2024-11-16 06:54:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:21,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892428674] [2024-11-16 06:54:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:21,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 40 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 06:54:21,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:21,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892428674] [2024-11-16 06:54:21,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892428674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:21,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571877735] [2024-11-16 06:54:21,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:54:21,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:21,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:21,274 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:21,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-11-16 06:54:21,403 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-16 06:54:21,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:21,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 06:54:21,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 06:54:21,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-16 06:54:21,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571877735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:21,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:21,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2024-11-16 06:54:21,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494550193] [2024-11-16 06:54:21,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:21,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 06:54:21,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:21,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 06:54:21,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-11-16 06:54:21,579 INFO L87 Difference]: Start difference. First operand 1021 states and 1090 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:21,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:21,939 INFO L93 Difference]: Finished difference Result 1472 states and 1594 transitions. [2024-11-16 06:54:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 06:54:21,939 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 06:54:21,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:21,941 INFO L225 Difference]: With dead ends: 1472 [2024-11-16 06:54:21,941 INFO L226 Difference]: Without dead ends: 1175 [2024-11-16 06:54:21,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 124 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 06:54:21,942 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 50 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:21,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 273 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:54:21,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2024-11-16 06:54:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2024-11-16 06:54:22,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 1.0689948892674617) internal successors, (1255), 1174 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1255 transitions. [2024-11-16 06:54:22,163 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1255 transitions. Word has length 71 [2024-11-16 06:54:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:22,163 INFO L471 AbstractCegarLoop]: Abstraction has 1175 states and 1255 transitions. [2024-11-16 06:54:22,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:22,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1255 transitions. [2024-11-16 06:54:22,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 06:54:22,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:22,165 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:22,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:22,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-11-16 06:54:22,369 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:22,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:22,370 INFO L85 PathProgramCache]: Analyzing trace with hash 583630878, now seen corresponding path program 70 times [2024-11-16 06:54:22,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:22,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522478770] [2024-11-16 06:54:22,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:22,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:54:22,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:22,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522478770] [2024-11-16 06:54:22,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522478770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:22,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333356846] [2024-11-16 06:54:22,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:54:22,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:22,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:22,849 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:22,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-11-16 06:54:22,938 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:54:22,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:22,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-16 06:54:22,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:54:23,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:54:23,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333356846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:23,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:23,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 50 [2024-11-16 06:54:23,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945111409] [2024-11-16 06:54:23,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:23,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-16 06:54:23,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:23,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-16 06:54:23,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2330, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 06:54:23,566 INFO L87 Difference]: Start difference. First operand 1175 states and 1255 transitions. Second operand has 50 states, 50 states have (on average 2.28) internal successors, (114), 50 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:24,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:24,611 INFO L93 Difference]: Finished difference Result 1293 states and 1380 transitions. [2024-11-16 06:54:24,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-16 06:54:24,612 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.28) internal successors, (114), 50 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 06:54:24,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:24,614 INFO L225 Difference]: With dead ends: 1293 [2024-11-16 06:54:24,614 INFO L226 Difference]: Without dead ends: 1281 [2024-11-16 06:54:24,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=195, Invalid=4095, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 06:54:24,615 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 158 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:24,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 3379 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 06:54:24,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2024-11-16 06:54:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1190. [2024-11-16 06:54:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 1.0689655172413792) internal successors, (1271), 1189 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1271 transitions. [2024-11-16 06:54:24,838 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1271 transitions. Word has length 73 [2024-11-16 06:54:24,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:24,838 INFO L471 AbstractCegarLoop]: Abstraction has 1190 states and 1271 transitions. [2024-11-16 06:54:24,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.28) internal successors, (114), 50 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:24,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1271 transitions. [2024-11-16 06:54:24,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 06:54:24,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:24,843 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:24,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-11-16 06:54:25,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:25,044 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:25,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:25,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1792753698, now seen corresponding path program 71 times [2024-11-16 06:54:25,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:25,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667444251] [2024-11-16 06:54:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:25,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:54:25,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:25,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667444251] [2024-11-16 06:54:25,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667444251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:25,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755899052] [2024-11-16 06:54:25,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:54:25,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:25,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:25,469 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:25,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-11-16 06:54:25,558 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-16 06:54:25,558 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:25,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-16 06:54:25,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:54:25,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:54:26,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755899052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:26,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:26,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 48 [2024-11-16 06:54:26,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310783282] [2024-11-16 06:54:26,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:26,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-16 06:54:26,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:26,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-16 06:54:26,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=2137, Unknown=0, NotChecked=0, Total=2256 [2024-11-16 06:54:26,162 INFO L87 Difference]: Start difference. First operand 1190 states and 1271 transitions. Second operand has 48 states, 48 states have (on average 2.3125) internal successors, (111), 48 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:27,031 INFO L93 Difference]: Finished difference Result 1222 states and 1302 transitions. [2024-11-16 06:54:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 06:54:27,031 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.3125) internal successors, (111), 48 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 06:54:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:27,034 INFO L225 Difference]: With dead ends: 1222 [2024-11-16 06:54:27,034 INFO L226 Difference]: Without dead ends: 1175 [2024-11-16 06:54:27,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=193, Invalid=3713, Unknown=0, NotChecked=0, Total=3906 [2024-11-16 06:54:27,035 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 119 mSDsluCounter, 2941 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:27,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 3034 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 06:54:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2024-11-16 06:54:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2024-11-16 06:54:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1174 states have (on average 1.0689948892674617) internal successors, (1255), 1174 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1255 transitions. [2024-11-16 06:54:27,282 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1255 transitions. Word has length 73 [2024-11-16 06:54:27,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:27,282 INFO L471 AbstractCegarLoop]: Abstraction has 1175 states and 1255 transitions. [2024-11-16 06:54:27,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.3125) internal successors, (111), 48 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:27,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1255 transitions. [2024-11-16 06:54:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 06:54:27,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:27,283 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:27,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-11-16 06:54:27,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:27,488 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:27,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:27,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1947529314, now seen corresponding path program 72 times [2024-11-16 06:54:27,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:27,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386292078] [2024-11-16 06:54:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:27,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:54:27,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:27,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386292078] [2024-11-16 06:54:27,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386292078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:27,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407950037] [2024-11-16 06:54:27,957 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:54:27,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:27,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:27,958 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:27,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-11-16 06:54:28,047 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-16 06:54:28,048 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:28,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-16 06:54:28,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:54:28,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 06:54:28,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407950037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:28,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:28,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 46 [2024-11-16 06:54:28,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236344437] [2024-11-16 06:54:28,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:28,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-16 06:54:28,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:28,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-16 06:54:28,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1952, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 06:54:28,681 INFO L87 Difference]: Start difference. First operand 1175 states and 1255 transitions. Second operand has 46 states, 46 states have (on average 2.3260869565217392) internal successors, (107), 46 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:29,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:29,479 INFO L93 Difference]: Finished difference Result 1205 states and 1284 transitions. [2024-11-16 06:54:29,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-16 06:54:29,479 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.3260869565217392) internal successors, (107), 46 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 06:54:29,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:29,481 INFO L225 Difference]: With dead ends: 1205 [2024-11-16 06:54:29,482 INFO L226 Difference]: Without dead ends: 1156 [2024-11-16 06:54:29,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=191, Invalid=3349, Unknown=0, NotChecked=0, Total=3540 [2024-11-16 06:54:29,482 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 101 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:29,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 2322 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 06:54:29,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2024-11-16 06:54:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1156. [2024-11-16 06:54:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.0692640692640694) internal successors, (1235), 1155 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1235 transitions. [2024-11-16 06:54:29,710 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1235 transitions. Word has length 73 [2024-11-16 06:54:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:29,710 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1235 transitions. [2024-11-16 06:54:29,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.3260869565217392) internal successors, (107), 46 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1235 transitions. [2024-11-16 06:54:29,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 06:54:29,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:29,711 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:29,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:29,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2024-11-16 06:54:29,915 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:29,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash -141004962, now seen corresponding path program 73 times [2024-11-16 06:54:29,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:29,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003970141] [2024-11-16 06:54:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:29,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:54:30,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:30,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003970141] [2024-11-16 06:54:30,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003970141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:30,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643239281] [2024-11-16 06:54:30,240 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:54:30,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:30,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:30,242 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:30,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-11-16 06:54:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:30,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-16 06:54:30,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:54:30,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-16 06:54:31,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643239281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:31,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:31,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 44 [2024-11-16 06:54:31,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505011754] [2024-11-16 06:54:31,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:31,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 06:54:31,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:31,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 06:54:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1775, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 06:54:31,002 INFO L87 Difference]: Start difference. First operand 1156 states and 1235 transitions. Second operand has 44 states, 44 states have (on average 2.340909090909091) internal successors, (103), 44 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:31,663 INFO L93 Difference]: Finished difference Result 1184 states and 1262 transitions. [2024-11-16 06:54:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 06:54:31,663 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.340909090909091) internal successors, (103), 44 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 06:54:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:31,665 INFO L225 Difference]: With dead ends: 1184 [2024-11-16 06:54:31,665 INFO L226 Difference]: Without dead ends: 1133 [2024-11-16 06:54:31,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=189, Invalid=3003, Unknown=0, NotChecked=0, Total=3192 [2024-11-16 06:54:31,666 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 77 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:31,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1811 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:54:31,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2024-11-16 06:54:31,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2024-11-16 06:54:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1132 states have (on average 1.0697879858657244) internal successors, (1211), 1132 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1211 transitions. [2024-11-16 06:54:31,880 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1211 transitions. Word has length 73 [2024-11-16 06:54:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:31,880 INFO L471 AbstractCegarLoop]: Abstraction has 1133 states and 1211 transitions. [2024-11-16 06:54:31,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.340909090909091) internal successors, (103), 44 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1211 transitions. [2024-11-16 06:54:31,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 06:54:31,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:31,882 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:31,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:32,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:32,087 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:32,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:32,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1355582, now seen corresponding path program 74 times [2024-11-16 06:54:32,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:32,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199001984] [2024-11-16 06:54:32,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:32,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 62 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 06:54:32,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199001984] [2024-11-16 06:54:32,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199001984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572468079] [2024-11-16 06:54:32,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:54:32,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:32,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:32,295 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:32,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-11-16 06:54:32,386 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:54:32,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:32,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 06:54:32,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-16 06:54:32,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-16 06:54:32,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572468079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:32,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:32,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2024-11-16 06:54:32,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971051964] [2024-11-16 06:54:32,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:32,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 06:54:32,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:32,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 06:54:32,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:54:32,854 INFO L87 Difference]: Start difference. First operand 1133 states and 1211 transitions. Second operand has 35 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 35 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:33,390 INFO L93 Difference]: Finished difference Result 1362 states and 1460 transitions. [2024-11-16 06:54:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 06:54:33,390 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 35 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 06:54:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:33,392 INFO L225 Difference]: With dead ends: 1362 [2024-11-16 06:54:33,392 INFO L226 Difference]: Without dead ends: 1246 [2024-11-16 06:54:33,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=246, Invalid=1734, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 06:54:33,393 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:33,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 575 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:54:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2024-11-16 06:54:33,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1246. [2024-11-16 06:54:33,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 1.0626506024096385) internal successors, (1323), 1245 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1323 transitions. [2024-11-16 06:54:33,640 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1323 transitions. Word has length 73 [2024-11-16 06:54:33,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:33,641 INFO L471 AbstractCegarLoop]: Abstraction has 1246 states and 1323 transitions. [2024-11-16 06:54:33,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.7142857142857144) internal successors, (95), 35 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:33,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1323 transitions. [2024-11-16 06:54:33,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 06:54:33,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:33,643 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:33,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:33,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:33,847 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:33,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:33,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1504239390, now seen corresponding path program 75 times [2024-11-16 06:54:33,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:33,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720104557] [2024-11-16 06:54:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:33,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 06:54:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:34,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720104557] [2024-11-16 06:54:34,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720104557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:34,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833516390] [2024-11-16 06:54:34,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:54:34,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:34,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:34,216 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:34,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-11-16 06:54:34,309 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-16 06:54:34,309 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:34,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-16 06:54:34,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 06:54:34,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-16 06:54:34,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833516390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:34,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:34,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 42 [2024-11-16 06:54:34,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874978393] [2024-11-16 06:54:34,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:34,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-16 06:54:34,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:34,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-16 06:54:34,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1606, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 06:54:34,869 INFO L87 Difference]: Start difference. First operand 1246 states and 1323 transitions. Second operand has 42 states, 42 states have (on average 2.3333333333333335) internal successors, (98), 42 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:35,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:35,532 INFO L93 Difference]: Finished difference Result 1313 states and 1394 transitions. [2024-11-16 06:54:35,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 06:54:35,532 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.3333333333333335) internal successors, (98), 42 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 06:54:35,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:35,534 INFO L225 Difference]: With dead ends: 1313 [2024-11-16 06:54:35,534 INFO L226 Difference]: Without dead ends: 1260 [2024-11-16 06:54:35,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=187, Invalid=2675, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 06:54:35,535 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 61 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:35,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1321 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:54:35,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2024-11-16 06:54:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1239. [2024-11-16 06:54:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 1.0638126009693054) internal successors, (1317), 1238 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1317 transitions. [2024-11-16 06:54:35,768 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1317 transitions. Word has length 73 [2024-11-16 06:54:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:35,768 INFO L471 AbstractCegarLoop]: Abstraction has 1239 states and 1317 transitions. [2024-11-16 06:54:35,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.3333333333333335) internal successors, (98), 42 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1317 transitions. [2024-11-16 06:54:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 06:54:35,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:35,769 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:35,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-11-16 06:54:35,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:35,970 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:35,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:35,971 INFO L85 PathProgramCache]: Analyzing trace with hash 934672062, now seen corresponding path program 76 times [2024-11-16 06:54:35,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:35,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129867480] [2024-11-16 06:54:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:35,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 06:54:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129867480] [2024-11-16 06:54:36,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129867480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79274625] [2024-11-16 06:54:36,168 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:54:36,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:36,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:36,169 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:36,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-11-16 06:54:36,261 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:54:36,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:36,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 06:54:36,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-16 06:54:36,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-16 06:54:36,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79274625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:36,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:36,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2024-11-16 06:54:36,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128560196] [2024-11-16 06:54:36,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:36,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 06:54:36,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:36,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 06:54:36,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1089, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:54:36,868 INFO L87 Difference]: Start difference. First operand 1239 states and 1317 transitions. Second operand has 35 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:37,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:37,565 INFO L93 Difference]: Finished difference Result 1301 states and 1379 transitions. [2024-11-16 06:54:37,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 06:54:37,566 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 06:54:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:37,568 INFO L225 Difference]: With dead ends: 1301 [2024-11-16 06:54:37,568 INFO L226 Difference]: Without dead ends: 1239 [2024-11-16 06:54:37,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 121 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 06:54:37,569 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:37,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 909 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:54:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2024-11-16 06:54:37,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1239. [2024-11-16 06:54:37,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 1.055735056542811) internal successors, (1307), 1238 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1307 transitions. [2024-11-16 06:54:37,797 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1307 transitions. Word has length 73 [2024-11-16 06:54:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:37,797 INFO L471 AbstractCegarLoop]: Abstraction has 1239 states and 1307 transitions. [2024-11-16 06:54:37,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1307 transitions. [2024-11-16 06:54:37,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-16 06:54:37,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:37,799 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:37,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:38,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2024-11-16 06:54:38,003 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:38,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash -386190497, now seen corresponding path program 77 times [2024-11-16 06:54:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151751937] [2024-11-16 06:54:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 22 proven. 220 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:54:38,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:38,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151751937] [2024-11-16 06:54:38,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151751937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:38,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478534149] [2024-11-16 06:54:38,391 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:54:38,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:38,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:38,392 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:38,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-11-16 06:54:38,487 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-16 06:54:38,487 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:38,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 06:54:38,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 22 proven. 220 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 06:54:39,292 INFO L311 TraceCheckSpWp]: Computing backward predicates...