./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de32.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/in-de32.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 be02771c62bfe2ce14e3e1aa527948281d29318788bbe261fd0d537b1dc5e291 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:21:02,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:21:02,799 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:21:02,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:21:02,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:21:02,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:21:02,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:21:02,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:21:02,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:21:02,829 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:21:02,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:21:02,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:21:02,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:21:02,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:21:02,831 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:21:02,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:21:02,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:21:02,832 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:21:02,832 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:21:02,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:21:02,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:21:02,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:21:02,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:21:02,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:21:02,834 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:21:02,835 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:21:02,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:21:02,835 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:21:02,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:21:02,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:21:02,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:21:02,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:21:02,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:21:02,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:21:02,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:21:02,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:21:02,837 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:21:02,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:21:02,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:21:02,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:21:02,838 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:21:02,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:21:02,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be02771c62bfe2ce14e3e1aa527948281d29318788bbe261fd0d537b1dc5e291 [2024-11-18 13:21:03,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:21:03,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:21:03,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:21:03,078 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:21:03,078 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:21:03,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/in-de32.c [2024-11-18 13:21:04,381 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:21:04,553 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:21:04,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de32.c [2024-11-18 13:21:04,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3e4e40a7/17b3d253aeef49b38ffdd2b15349422d/FLAGeaec2455f [2024-11-18 13:21:04,569 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3e4e40a7/17b3d253aeef49b38ffdd2b15349422d [2024-11-18 13:21:04,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:21:04,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:21:04,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:21:04,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:21:04,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:21:04,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c1c122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04, skipping insertion in model container [2024-11-18 13:21:04,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,592 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:21:04,720 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/in-de32.c[368,381] [2024-11-18 13:21:04,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:21:04,737 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:21:04,745 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/in-de32.c[368,381] [2024-11-18 13:21:04,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:21:04,759 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:21:04,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04 WrapperNode [2024-11-18 13:21:04,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:21:04,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:21:04,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:21:04,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:21:04,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,783 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-18 13:21:04,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:21:04,784 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:21:04,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:21:04,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:21:04,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,793 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,801 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]. [2024-11-18 13:21:04,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,807 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,811 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:21:04,812 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:21:04,812 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:21:04,812 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:21:04,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (1/1) ... [2024-11-18 13:21:04,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:21:04,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:04,842 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) [2024-11-18 13:21:04,846 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 [2024-11-18 13:21:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:21:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:21:04,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:21:04,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:21:04,949 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:21:04,951 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:21:05,060 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-18 13:21:05,060 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:21:05,071 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:21:05,072 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-18 13:21:05,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:21:05 BoogieIcfgContainer [2024-11-18 13:21:05,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:21:05,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:21:05,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:21:05,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:21:05,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:21:04" (1/3) ... [2024-11-18 13:21:05,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508cad06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:21:05, skipping insertion in model container [2024-11-18 13:21:05,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:04" (2/3) ... [2024-11-18 13:21:05,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508cad06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:21:05, skipping insertion in model container [2024-11-18 13:21:05,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:21:05" (3/3) ... [2024-11-18 13:21:05,080 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de32.c [2024-11-18 13:21:05,093 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:21:05,094 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:21:05,136 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:21:05,141 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;@6141d36a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:21:05,141 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:21:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:05,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-18 13:21:05,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:05,152 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:05,152 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:05,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:05,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1157484939, now seen corresponding path program 1 times [2024-11-18 13:21:05,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:05,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680330394] [2024-11-18 13:21:05,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:05,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:05,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:05,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680330394] [2024-11-18 13:21:05,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680330394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:21:05,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:21:05,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:21:05,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140484574] [2024-11-18 13:21:05,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:21:05,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:21:05,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:05,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:21:05,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:21:05,470 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 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 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:05,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:05,518 INFO L93 Difference]: Finished difference Result 29 states and 44 transitions. [2024-11-18 13:21:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:21:05,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-18 13:21:05,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:05,526 INFO L225 Difference]: With dead ends: 29 [2024-11-18 13:21:05,528 INFO L226 Difference]: Without dead ends: 12 [2024-11-18 13:21:05,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:21:05,535 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:05,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:05,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-18 13:21:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-18 13:21:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2024-11-18 13:21:05,559 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 9 [2024-11-18 13:21:05,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:05,560 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2024-11-18 13:21:05,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2024-11-18 13:21:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:21:05,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:05,563 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:05,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:21:05,564 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:05,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1520629346, now seen corresponding path program 1 times [2024-11-18 13:21:05,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:05,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295796745] [2024-11-18 13:21:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:05,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:05,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:05,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295796745] [2024-11-18 13:21:05,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295796745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:21:05,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:21:05,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:21:05,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098109510] [2024-11-18 13:21:05,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:21:05,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:21:05,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:05,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:21:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 13:21:05,664 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:05,685 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2024-11-18 13:21:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:21:05,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-18 13:21:05,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:05,687 INFO L225 Difference]: With dead ends: 23 [2024-11-18 13:21:05,688 INFO L226 Difference]: Without dead ends: 17 [2024-11-18 13:21:05,688 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 [2024-11-18 13:21:05,689 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 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 [2024-11-18 13:21:05,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-18 13:21:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-18 13:21:05,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:05,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-18 13:21:05,698 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 10 [2024-11-18 13:21:05,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:05,699 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-18 13:21:05,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:05,699 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-11-18 13:21:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:21:05,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:05,700 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:05,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:21:05,700 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:05,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:05,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1475376817, now seen corresponding path program 1 times [2024-11-18 13:21:05,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:05,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449125813] [2024-11-18 13:21:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:05,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:05,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:05,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449125813] [2024-11-18 13:21:05,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449125813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:21:05,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:21:05,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:21:05,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641394285] [2024-11-18 13:21:05,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:21:05,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:21:05,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:21:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:21:05,814 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:05,849 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2024-11-18 13:21:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:21:05,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-18 13:21:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:05,850 INFO L225 Difference]: With dead ends: 21 [2024-11-18 13:21:05,850 INFO L226 Difference]: Without dead ends: 13 [2024-11-18 13:21:05,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:21:05,851 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 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 [2024-11-18 13:21:05,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-18 13:21:05,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-18 13:21:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:05,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2024-11-18 13:21:05,860 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 10 [2024-11-18 13:21:05,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:05,860 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-11-18 13:21:05,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:05,861 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2024-11-18 13:21:05,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 13:21:05,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:05,862 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:05,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 13:21:05,863 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:05,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:05,866 INFO L85 PathProgramCache]: Analyzing trace with hash 925156739, now seen corresponding path program 1 times [2024-11-18 13:21:05,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:05,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238705424] [2024-11-18 13:21:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:05,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:05,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:05,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238705424] [2024-11-18 13:21:05,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238705424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:05,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856508827] [2024-11-18 13:21:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:05,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:05,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:05,963 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) [2024-11-18 13:21:05,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:21:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:06,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 13:21:06,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:06,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:06,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:06,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856508827] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:06,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:21:06,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-11-18 13:21:06,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952435911] [2024-11-18 13:21:06,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:21:06,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:21:06,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:06,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:21:06,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:21:06,088 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:06,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:06,107 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2024-11-18 13:21:06,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:21:06,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-18 13:21:06,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:06,108 INFO L225 Difference]: With dead ends: 18 [2024-11-18 13:21:06,108 INFO L226 Difference]: Without dead ends: 12 [2024-11-18 13:21:06,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:21:06,109 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:06,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-18 13:21:06,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-18 13:21:06,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:06,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-18 13:21:06,117 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 11 [2024-11-18 13:21:06,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:06,117 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-18 13:21:06,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:06,117 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-18 13:21:06,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 13:21:06,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:06,118 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:06,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:21:06,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:06,327 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:06,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:06,328 INFO L85 PathProgramCache]: Analyzing trace with hash 970409268, now seen corresponding path program 1 times [2024-11-18 13:21:06,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:06,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82396843] [2024-11-18 13:21:06,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:06,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:06,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:06,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82396843] [2024-11-18 13:21:06,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82396843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:06,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116592872] [2024-11-18 13:21:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:06,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:06,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:06,407 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) [2024-11-18 13:21:06,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:21:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:06,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 13:21:06,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:06,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:06,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116592872] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:06,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:21:06,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2024-11-18 13:21:06,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396762079] [2024-11-18 13:21:06,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:21:06,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:21:06,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:21:06,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:21:06,521 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:06,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:06,532 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2024-11-18 13:21:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:21:06,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-18 13:21:06,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:06,533 INFO L225 Difference]: With dead ends: 17 [2024-11-18 13:21:06,533 INFO L226 Difference]: Without dead ends: 13 [2024-11-18 13:21:06,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:21:06,534 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 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 [2024-11-18 13:21:06,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:06,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-18 13:21:06,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-18 13:21:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-11-18 13:21:06,538 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 11 [2024-11-18 13:21:06,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:06,538 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-18 13:21:06,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-11-18 13:21:06,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-18 13:21:06,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:06,539 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:06,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:21:06,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:06,747 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:06,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:06,747 INFO L85 PathProgramCache]: Analyzing trace with hash 19581631, now seen corresponding path program 1 times [2024-11-18 13:21:06,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:06,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553058775] [2024-11-18 13:21:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:06,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:06,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:06,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553058775] [2024-11-18 13:21:06,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553058775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:06,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039098998] [2024-11-18 13:21:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:06,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:06,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:06,874 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) [2024-11-18 13:21:06,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:21:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:06,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 13:21:06,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:06,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:06,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039098998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:06,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:06,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-18 13:21:06,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783286718] [2024-11-18 13:21:06,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:06,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:21:06,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:06,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:21:06,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:21:06,989 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:07,014 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2024-11-18 13:21:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:21:07,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-18 13:21:07,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:07,015 INFO L225 Difference]: With dead ends: 20 [2024-11-18 13:21:07,015 INFO L226 Difference]: Without dead ends: 16 [2024-11-18 13:21:07,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:21:07,016 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:07,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-18 13:21:07,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-18 13:21:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:07,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-11-18 13:21:07,022 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 12 [2024-11-18 13:21:07,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:07,022 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-11-18 13:21:07,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:07,023 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-11-18 13:21:07,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 13:21:07,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:07,023 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:07,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:07,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:07,227 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:07,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:07,227 INFO L85 PathProgramCache]: Analyzing trace with hash 608695956, now seen corresponding path program 2 times [2024-11-18 13:21:07,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:07,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312558248] [2024-11-18 13:21:07,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:07,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:07,241 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:07,241 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:07,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:07,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312558248] [2024-11-18 13:21:07,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312558248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:07,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864636682] [2024-11-18 13:21:07,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:07,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:07,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:07,314 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) [2024-11-18 13:21:07,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:21:07,347 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:07,347 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:07,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 13:21:07,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:07,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:07,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:07,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864636682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:07,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:07,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-11-18 13:21:07,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461365881] [2024-11-18 13:21:07,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:07,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 13:21:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:07,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 13:21:07,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:21:07,467 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:07,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:07,516 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2024-11-18 13:21:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:21:07,516 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 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 13 [2024-11-18 13:21:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:07,517 INFO L225 Difference]: With dead ends: 29 [2024-11-18 13:21:07,517 INFO L226 Difference]: Without dead ends: 15 [2024-11-18 13:21:07,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:21:07,518 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:07,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-18 13:21:07,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-18 13:21:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-18 13:21:07,521 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 13 [2024-11-18 13:21:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:07,522 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-18 13:21:07,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:07,522 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-18 13:21:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-18 13:21:07,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:07,523 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:07,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 13:21:07,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:07,728 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:07,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash 304605950, now seen corresponding path program 3 times [2024-11-18 13:21:07,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:07,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533494777] [2024-11-18 13:21:07,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:07,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:07,739 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 13:21:07,739 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:21:07,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:07,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533494777] [2024-11-18 13:21:07,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533494777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:07,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650808277] [2024-11-18 13:21:07,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:07,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:07,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:07,802 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) [2024-11-18 13:21:07,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:21:07,844 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 13:21:07,845 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:07,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 13:21:07,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:07,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:21:07,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650808277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:07,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:07,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 12 [2024-11-18 13:21:07,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567649291] [2024-11-18 13:21:07,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:07,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 13:21:07,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 13:21:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:21:07,936 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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) [2024-11-18 13:21:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:08,003 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2024-11-18 13:21:08,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 13:21:08,004 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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 14 [2024-11-18 13:21:08,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:08,004 INFO L225 Difference]: With dead ends: 40 [2024-11-18 13:21:08,004 INFO L226 Difference]: Without dead ends: 35 [2024-11-18 13:21:08,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:21:08,005 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:08,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 37 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:08,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-18 13:21:08,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2024-11-18 13:21:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 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) [2024-11-18 13:21:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-18 13:21:08,014 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2024-11-18 13:21:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:08,014 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-18 13:21:08,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 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) [2024-11-18 13:21:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-18 13:21:08,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 13:21:08,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:08,015 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:08,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 13:21:08,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:08,220 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:08,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:08,220 INFO L85 PathProgramCache]: Analyzing trace with hash 854515253, now seen corresponding path program 4 times [2024-11-18 13:21:08,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:08,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28884754] [2024-11-18 13:21:08,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:08,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:08,239 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:08,240 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:21:08,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:08,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28884754] [2024-11-18 13:21:08,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28884754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:08,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615097166] [2024-11-18 13:21:08,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:08,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:08,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:08,332 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) [2024-11-18 13:21:08,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:21:08,369 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:08,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:08,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 13:21:08,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:21:08,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:21:08,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615097166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:08,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:08,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-18 13:21:08,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27703008] [2024-11-18 13:21:08,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:08,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:21:08,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:08,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:21:08,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:21:08,459 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:08,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:08,493 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2024-11-18 13:21:08,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:21:08,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-18 13:21:08,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:08,494 INFO L225 Difference]: With dead ends: 36 [2024-11-18 13:21:08,494 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 13:21:08,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:21:08,495 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:08,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:08,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 13:21:08,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-18 13:21:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:08,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-18 13:21:08,503 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 15 [2024-11-18 13:21:08,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:08,503 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-18 13:21:08,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-18 13:21:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 13:21:08,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:08,504 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:08,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:08,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:08,709 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:08,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:08,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1259841871, now seen corresponding path program 5 times [2024-11-18 13:21:08,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:08,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012693372] [2024-11-18 13:21:08,710 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:21:08,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:08,723 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-18 13:21:08,723 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:21:08,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:08,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012693372] [2024-11-18 13:21:08,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012693372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:08,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218775067] [2024-11-18 13:21:08,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:21:08,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:08,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:08,799 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) [2024-11-18 13:21:08,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:21:08,842 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-18 13:21:08,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:08,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 13:21:08,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:21:08,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:21:09,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218775067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:09,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:09,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-18 13:21:09,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293836520] [2024-11-18 13:21:09,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:09,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 13:21:09,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:09,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 13:21:09,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:21:09,011 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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) [2024-11-18 13:21:09,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:09,131 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2024-11-18 13:21:09,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 13:21:09,132 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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 16 [2024-11-18 13:21:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:09,133 INFO L225 Difference]: With dead ends: 60 [2024-11-18 13:21:09,133 INFO L226 Difference]: Without dead ends: 48 [2024-11-18 13:21:09,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-18 13:21:09,134 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:09,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 85 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:09,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-18 13:21:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 18. [2024-11-18 13:21:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-18 13:21:09,139 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 16 [2024-11-18 13:21:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:09,140 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-18 13:21:09,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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) [2024-11-18 13:21:09,140 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-18 13:21:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 13:21:09,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:09,140 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:09,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:09,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:09,344 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:09,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1966551549, now seen corresponding path program 6 times [2024-11-18 13:21:09,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:09,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271149324] [2024-11-18 13:21:09,345 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:21:09,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:09,354 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 13:21:09,354 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:09,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:09,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271149324] [2024-11-18 13:21:09,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271149324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:09,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632682371] [2024-11-18 13:21:09,434 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:21:09,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:09,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:09,436 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) [2024-11-18 13:21:09,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 13:21:09,470 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 13:21:09,471 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:09,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 13:21:09,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:09,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:09,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632682371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:09,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:09,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18 [2024-11-18 13:21:09,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221736047] [2024-11-18 13:21:09,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:09,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 13:21:09,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:09,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 13:21:09,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:21:09,642 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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) [2024-11-18 13:21:09,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:09,767 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2024-11-18 13:21:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 13:21:09,768 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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 17 [2024-11-18 13:21:09,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:09,768 INFO L225 Difference]: With dead ends: 43 [2024-11-18 13:21:09,768 INFO L226 Difference]: Without dead ends: 32 [2024-11-18 13:21:09,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-18 13:21:09,769 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:09,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 51 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-18 13:21:09,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-18 13:21:09,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:09,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2024-11-18 13:21:09,776 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 17 [2024-11-18 13:21:09,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:09,777 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2024-11-18 13:21:09,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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) [2024-11-18 13:21:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2024-11-18 13:21:09,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 13:21:09,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:09,777 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:09,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 13:21:09,981 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,SelfDestructingSolverStorable10 [2024-11-18 13:21:09,982 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:09,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:09,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1333529985, now seen corresponding path program 7 times [2024-11-18 13:21:09,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:09,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554866013] [2024-11-18 13:21:09,982 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:21:09,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:10,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:10,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554866013] [2024-11-18 13:21:10,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554866013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:10,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508233339] [2024-11-18 13:21:10,120 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:21:10,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:10,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:10,122 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) [2024-11-18 13:21:10,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 13:21:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:10,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 13:21:10,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:10,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:10,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508233339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:10,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:10,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-11-18 13:21:10,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35136075] [2024-11-18 13:21:10,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:10,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:21:10,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:10,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:21:10,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:21:10,251 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:10,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:10,299 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-11-18 13:21:10,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:21:10,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2024-11-18 13:21:10,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:10,300 INFO L225 Difference]: With dead ends: 45 [2024-11-18 13:21:10,300 INFO L226 Difference]: Without dead ends: 37 [2024-11-18 13:21:10,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:21:10,301 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:10,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:10,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-18 13:21:10,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2024-11-18 13:21:10,311 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) [2024-11-18 13:21:10,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-18 13:21:10,311 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 18 [2024-11-18 13:21:10,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:10,311 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-18 13:21:10,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:10,312 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-18 13:21:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-18 13:21:10,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:10,312 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:10,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 13:21:10,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:10,517 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:10,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:10,517 INFO L85 PathProgramCache]: Analyzing trace with hash 159423631, now seen corresponding path program 8 times [2024-11-18 13:21:10,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:10,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79183094] [2024-11-18 13:21:10,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:10,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:10,537 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:10,538 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:21:10,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:10,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79183094] [2024-11-18 13:21:10,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79183094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:10,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536053273] [2024-11-18 13:21:10,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:10,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:10,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:10,671 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) [2024-11-18 13:21:10,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 13:21:10,711 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:10,711 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:10,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 13:21:10,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:21:10,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:10,910 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:21:10,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536053273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:10,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:10,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2024-11-18 13:21:10,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990590450] [2024-11-18 13:21:10,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:10,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 13:21:10,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:10,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 13:21:10,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-18 13:21:10,912 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:11,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:11,200 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2024-11-18 13:21:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-18 13:21:11,201 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-18 13:21:11,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:11,201 INFO L225 Difference]: With dead ends: 62 [2024-11-18 13:21:11,201 INFO L226 Difference]: Without dead ends: 49 [2024-11-18 13:21:11,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2024-11-18 13:21:11,202 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:11,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 100 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:21:11,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-18 13:21:11,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-11-18 13:21:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 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) [2024-11-18 13:21:11,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2024-11-18 13:21:11,219 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 20 [2024-11-18 13:21:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:11,219 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2024-11-18 13:21:11,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2024-11-18 13:21:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 13:21:11,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:11,221 INFO L215 NwaCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:11,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 13:21:11,421 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,SelfDestructingSolverStorable12 [2024-11-18 13:21:11,422 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:11,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1297347325, now seen corresponding path program 9 times [2024-11-18 13:21:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:11,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108662819] [2024-11-18 13:21:11,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:11,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:11,447 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 13:21:11,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:11,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:11,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108662819] [2024-11-18 13:21:11,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108662819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:11,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697885278] [2024-11-18 13:21:11,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:11,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:11,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:11,579 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) [2024-11-18 13:21:11,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 13:21:11,618 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 13:21:11,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:11,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 13:21:11,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:11,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:11,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697885278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:11,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:11,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-18 13:21:11,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450952023] [2024-11-18 13:21:11,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:11,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 13:21:11,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:11,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 13:21:11,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2024-11-18 13:21:11,861 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:12,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:12,797 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2024-11-18 13:21:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-18 13:21:12,798 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-18 13:21:12,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:12,798 INFO L225 Difference]: With dead ends: 95 [2024-11-18 13:21:12,798 INFO L226 Difference]: Without dead ends: 75 [2024-11-18 13:21:12,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=494, Invalid=3166, Unknown=0, NotChecked=0, Total=3660 [2024-11-18 13:21:12,800 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 85 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:12,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 108 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:21:12,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-18 13:21:12,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 54. [2024-11-18 13:21:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 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) [2024-11-18 13:21:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2024-11-18 13:21:12,818 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 21 [2024-11-18 13:21:12,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:12,818 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2024-11-18 13:21:12,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:12,818 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2024-11-18 13:21:12,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 13:21:12,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:12,819 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:12,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:13,023 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,SelfDestructingSolverStorable13 [2024-11-18 13:21:13,024 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:13,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:13,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2017092107, now seen corresponding path program 10 times [2024-11-18 13:21:13,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:13,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959867084] [2024-11-18 13:21:13,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:13,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:13,036 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:13,036 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:21:13,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:13,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959867084] [2024-11-18 13:21:13,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959867084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:13,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60621206] [2024-11-18 13:21:13,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:13,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:13,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:13,148 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) [2024-11-18 13:21:13,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 13:21:13,183 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:13,183 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:13,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 13:21:13,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:21:13,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:21:13,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60621206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:13,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:13,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2024-11-18 13:21:13,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119685399] [2024-11-18 13:21:13,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:13,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:21:13,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:13,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:21:13,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:21:13,278 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:13,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:13,346 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2024-11-18 13:21:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:21:13,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 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 21 [2024-11-18 13:21:13,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:13,347 INFO L225 Difference]: With dead ends: 76 [2024-11-18 13:21:13,347 INFO L226 Difference]: Without dead ends: 67 [2024-11-18 13:21:13,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 11 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:21:13,347 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:13,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:13,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-18 13:21:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2024-11-18 13:21:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.203125) internal successors, (77), 64 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) [2024-11-18 13:21:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2024-11-18 13:21:13,373 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 21 [2024-11-18 13:21:13,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:13,373 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2024-11-18 13:21:13,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:13,373 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2024-11-18 13:21:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 13:21:13,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:13,374 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:13,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 13:21:13,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 13:21:13,575 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:13,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1802340255, now seen corresponding path program 11 times [2024-11-18 13:21:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:13,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106982181] [2024-11-18 13:21:13,575 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:21:13,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:13,601 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 13:21:13,604 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:21:13,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:13,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106982181] [2024-11-18 13:21:13,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106982181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:13,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433228675] [2024-11-18 13:21:13,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:21:13,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:13,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:13,715 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) [2024-11-18 13:21:13,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 13:21:13,774 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 13:21:13,774 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:13,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-18 13:21:13,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:13,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 13:21:13,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433228675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:13,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:13,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 10] total 21 [2024-11-18 13:21:13,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744750281] [2024-11-18 13:21:13,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:13,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 13:21:13,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:13,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 13:21:13,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2024-11-18 13:21:13,963 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 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) [2024-11-18 13:21:14,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:14,212 INFO L93 Difference]: Finished difference Result 114 states and 138 transitions. [2024-11-18 13:21:14,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 13:21:14,212 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 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) Word has length 22 [2024-11-18 13:21:14,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:14,213 INFO L225 Difference]: With dead ends: 114 [2024-11-18 13:21:14,213 INFO L226 Difference]: Without dead ends: 109 [2024-11-18 13:21:14,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=515, Unknown=0, NotChecked=0, Total=756 [2024-11-18 13:21:14,214 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 40 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:14,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 97 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-18 13:21:14,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 67. [2024-11-18 13:21:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2024-11-18 13:21:14,246 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 22 [2024-11-18 13:21:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:14,247 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2024-11-18 13:21:14,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 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) [2024-11-18 13:21:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2024-11-18 13:21:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 13:21:14,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:14,247 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:14,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:14,451 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,SelfDestructingSolverStorable15 [2024-11-18 13:21:14,452 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:14,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1230457407, now seen corresponding path program 12 times [2024-11-18 13:21:14,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:14,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801023756] [2024-11-18 13:21:14,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:21:14,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:14,473 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:21:14,473 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:21:14,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:14,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801023756] [2024-11-18 13:21:14,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801023756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:14,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192399000] [2024-11-18 13:21:14,660 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:21:14,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:14,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:14,661 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) [2024-11-18 13:21:14,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 13:21:14,703 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:21:14,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:14,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 13:21:14,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:21:14,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:21:16,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192399000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:16,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:16,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-11-18 13:21:16,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624845701] [2024-11-18 13:21:16,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:16,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 13:21:16,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:16,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 13:21:16,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:21:16,197 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:16,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:16,301 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2024-11-18 13:21:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 13:21:16,301 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 24 [2024-11-18 13:21:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:16,302 INFO L225 Difference]: With dead ends: 90 [2024-11-18 13:21:16,302 INFO L226 Difference]: Without dead ends: 80 [2024-11-18 13:21:16,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 15 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:21:16,303 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:16,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:16,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-18 13:21:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2024-11-18 13:21:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 72 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) [2024-11-18 13:21:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2024-11-18 13:21:16,347 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 24 [2024-11-18 13:21:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:16,347 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2024-11-18 13:21:16,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2024-11-18 13:21:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 13:21:16,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:16,348 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:16,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:16,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:16,552 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:16,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:16,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2022250174, now seen corresponding path program 13 times [2024-11-18 13:21:16,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:16,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844706039] [2024-11-18 13:21:16,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:21:16,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:21:16,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:16,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844706039] [2024-11-18 13:21:16,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844706039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:16,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135322956] [2024-11-18 13:21:16,700 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:21:16,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:16,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:16,702 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) [2024-11-18 13:21:16,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 13:21:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:16,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-18 13:21:16,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:21:16,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 13:21:17,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135322956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:17,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:17,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 29 [2024-11-18 13:21:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338630925] [2024-11-18 13:21:17,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:17,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 13:21:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:17,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 13:21:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2024-11-18 13:21:17,004 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:17,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:17,567 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2024-11-18 13:21:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-18 13:21:17,571 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 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 24 [2024-11-18 13:21:17,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:17,572 INFO L225 Difference]: With dead ends: 107 [2024-11-18 13:21:17,572 INFO L226 Difference]: Without dead ends: 86 [2024-11-18 13:21:17,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=287, Invalid=1693, Unknown=0, NotChecked=0, Total=1980 [2024-11-18 13:21:17,574 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:17,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 136 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:21:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-18 13:21:17,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2024-11-18 13:21:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 79 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) [2024-11-18 13:21:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2024-11-18 13:21:17,601 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 24 [2024-11-18 13:21:17,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:17,601 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2024-11-18 13:21:17,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:17,601 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2024-11-18 13:21:17,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-18 13:21:17,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:17,602 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:17,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:17,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 13:21:17,802 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:17,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:17,803 INFO L85 PathProgramCache]: Analyzing trace with hash -622680971, now seen corresponding path program 14 times [2024-11-18 13:21:17,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:17,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390332307] [2024-11-18 13:21:17,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:17,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:17,819 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:17,820 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:21:17,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:17,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390332307] [2024-11-18 13:21:17,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390332307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:17,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206766601] [2024-11-18 13:21:17,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:17,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:17,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:17,996 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) [2024-11-18 13:21:17,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 13:21:18,032 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:18,033 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:18,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-18 13:21:18,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:21:18,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:21:18,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206766601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:18,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:18,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-18 13:21:18,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831761003] [2024-11-18 13:21:18,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:18,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-18 13:21:18,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:18,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-18 13:21:18,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=758, Unknown=0, NotChecked=0, Total=930 [2024-11-18 13:21:18,316 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 31 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:20,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:20,187 INFO L93 Difference]: Finished difference Result 151 states and 181 transitions. [2024-11-18 13:21:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-18 13:21:20,188 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2024-11-18 13:21:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:20,188 INFO L225 Difference]: With dead ends: 151 [2024-11-18 13:21:20,188 INFO L226 Difference]: Without dead ends: 126 [2024-11-18 13:21:20,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1875 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=998, Invalid=7012, Unknown=0, NotChecked=0, Total=8010 [2024-11-18 13:21:20,190 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 168 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:20,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 99 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:21:20,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-18 13:21:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 90. [2024-11-18 13:21:20,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.202247191011236) internal successors, (107), 89 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) [2024-11-18 13:21:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2024-11-18 13:21:20,224 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 25 [2024-11-18 13:21:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:20,224 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2024-11-18 13:21:20,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:20,225 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2024-11-18 13:21:20,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-18 13:21:20,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:20,226 INFO L215 NwaCegarLoop]: trace histogram [7, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:20,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:20,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:20,430 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:20,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:20,431 INFO L85 PathProgramCache]: Analyzing trace with hash -351478508, now seen corresponding path program 15 times [2024-11-18 13:21:20,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:20,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647097838] [2024-11-18 13:21:20,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:20,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:20,444 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 13:21:20,444 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:20,589 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:21:20,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:20,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647097838] [2024-11-18 13:21:20,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647097838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:20,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014983435] [2024-11-18 13:21:20,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:20,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:20,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:20,592 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) [2024-11-18 13:21:20,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 13:21:20,631 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 13:21:20,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:20,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 13:21:20,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:21:20,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:20,879 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:21:20,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014983435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:20,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:20,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 22 [2024-11-18 13:21:20,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564827498] [2024-11-18 13:21:20,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:20,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 13:21:20,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:20,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 13:21:20,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-11-18 13:21:20,880 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 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) [2024-11-18 13:21:21,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:21,330 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2024-11-18 13:21:21,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 13:21:21,330 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 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 25 [2024-11-18 13:21:21,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:21,331 INFO L225 Difference]: With dead ends: 103 [2024-11-18 13:21:21,331 INFO L226 Difference]: Without dead ends: 99 [2024-11-18 13:21:21,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=246, Invalid=1014, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 13:21:21,331 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:21,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 73 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:21,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-18 13:21:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2024-11-18 13:21:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 89 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2024-11-18 13:21:21,364 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 25 [2024-11-18 13:21:21,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:21,364 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2024-11-18 13:21:21,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 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) [2024-11-18 13:21:21,364 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2024-11-18 13:21:21,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-18 13:21:21,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:21,365 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:21,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 13:21:21,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:21,566 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:21,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:21,566 INFO L85 PathProgramCache]: Analyzing trace with hash 881225141, now seen corresponding path program 16 times [2024-11-18 13:21:21,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:21,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542109302] [2024-11-18 13:21:21,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:21,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:21,597 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:21,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 13:21:21,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542109302] [2024-11-18 13:21:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542109302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329280942] [2024-11-18 13:21:21,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:21,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:21,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:21,744 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) [2024-11-18 13:21:21,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 13:21:21,808 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:21,808 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:21,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-18 13:21:21,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 13:21:21,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 13:21:21,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329280942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:21,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:21,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-11-18 13:21:21,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164041720] [2024-11-18 13:21:21,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:21,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 13:21:21,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:21,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 13:21:21,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:21:21,934 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:22,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:22,047 INFO L93 Difference]: Finished difference Result 113 states and 132 transitions. [2024-11-18 13:21:22,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:21:22,048 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2024-11-18 13:21:22,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:22,048 INFO L225 Difference]: With dead ends: 113 [2024-11-18 13:21:22,048 INFO L226 Difference]: Without dead ends: 102 [2024-11-18 13:21:22,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 15 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:21:22,049 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:22,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 73 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:22,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-18 13:21:22,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2024-11-18 13:21:22,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 97 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2024-11-18 13:21:22,084 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 27 [2024-11-18 13:21:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:22,084 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2024-11-18 13:21:22,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:22,084 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2024-11-18 13:21:22,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 13:21:22,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:22,085 INFO L215 NwaCegarLoop]: trace histogram [9, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:22,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:22,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:22,285 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:22,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:22,286 INFO L85 PathProgramCache]: Analyzing trace with hash 768351039, now seen corresponding path program 17 times [2024-11-18 13:21:22,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:22,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215064735] [2024-11-18 13:21:22,286 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:21:22,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:22,308 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 13:21:22,309 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:21:22,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:22,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215064735] [2024-11-18 13:21:22,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215064735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:22,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669768494] [2024-11-18 13:21:22,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:21:22,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:22,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:22,514 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) [2024-11-18 13:21:22,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 13:21:22,588 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 13:21:22,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:22,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-18 13:21:22,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 13:21:22,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 13:21:22,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669768494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:22,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:22,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 36 [2024-11-18 13:21:22,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165474416] [2024-11-18 13:21:22,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:22,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-18 13:21:22,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:22,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-18 13:21:22,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 13:21:22,944 INFO L87 Difference]: Start difference. First operand 98 states and 116 transitions. Second operand has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:23,584 INFO L93 Difference]: Finished difference Result 184 states and 212 transitions. [2024-11-18 13:21:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-18 13:21:23,585 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 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 28 [2024-11-18 13:21:23,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:23,585 INFO L225 Difference]: With dead ends: 184 [2024-11-18 13:21:23,585 INFO L226 Difference]: Without dead ends: 163 [2024-11-18 13:21:23,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=457, Invalid=2093, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 13:21:23,586 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 80 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:23,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 156 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:23,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-18 13:21:23,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 81. [2024-11-18 13:21:23,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2) internal successors, (96), 80 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) [2024-11-18 13:21:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2024-11-18 13:21:23,621 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 28 [2024-11-18 13:21:23,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:23,621 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2024-11-18 13:21:23,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 36 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:23,621 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2024-11-18 13:21:23,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 13:21:23,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:23,621 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:23,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:23,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:23,822 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:23,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:23,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1728096780, now seen corresponding path program 18 times [2024-11-18 13:21:23,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:23,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512252722] [2024-11-18 13:21:23,823 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:21:23,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:23,833 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-18 13:21:23,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:21:23,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:23,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512252722] [2024-11-18 13:21:23,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512252722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:23,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999320584] [2024-11-18 13:21:23,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:21:23,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:23,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:23,944 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) [2024-11-18 13:21:23,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 13:21:23,987 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-18 13:21:23,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:23,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-18 13:21:23,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:24,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:21:24,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999320584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:24,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:24,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 16] total 32 [2024-11-18 13:21:24,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308957133] [2024-11-18 13:21:24,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:24,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 13:21:24,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:24,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 13:21:24,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2024-11-18 13:21:24,331 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 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) [2024-11-18 13:21:25,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:25,515 INFO L93 Difference]: Finished difference Result 258 states and 300 transitions. [2024-11-18 13:21:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-18 13:21:25,515 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 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 29 [2024-11-18 13:21:25,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:25,516 INFO L225 Difference]: With dead ends: 258 [2024-11-18 13:21:25,516 INFO L226 Difference]: Without dead ends: 225 [2024-11-18 13:21:25,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1148, Invalid=3012, Unknown=0, NotChecked=0, Total=4160 [2024-11-18 13:21:25,517 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 208 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:25,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 117 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:21:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-18 13:21:25,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 71. [2024-11-18 13:21:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 70 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) [2024-11-18 13:21:25,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2024-11-18 13:21:25,546 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 29 [2024-11-18 13:21:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:25,546 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2024-11-18 13:21:25,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 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) [2024-11-18 13:21:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2024-11-18 13:21:25,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-18 13:21:25,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:25,547 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:25,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:25,748 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,SelfDestructingSolverStorable22 [2024-11-18 13:21:25,748 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:25,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:25,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2029727233, now seen corresponding path program 19 times [2024-11-18 13:21:25,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:25,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205984539] [2024-11-18 13:21:25,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:21:25,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:21:25,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205984539] [2024-11-18 13:21:25,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205984539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660552853] [2024-11-18 13:21:25,939 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:21:25,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:25,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:25,940 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) [2024-11-18 13:21:25,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-18 13:21:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:25,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-18 13:21:25,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:21:26,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:21:26,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660552853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:26,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:26,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-11-18 13:21:26,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323612684] [2024-11-18 13:21:26,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:26,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 13:21:26,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:26,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 13:21:26,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:21:26,156 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:26,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:26,296 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2024-11-18 13:21:26,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 13:21:26,296 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 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 30 [2024-11-18 13:21:26,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:26,297 INFO L225 Difference]: With dead ends: 106 [2024-11-18 13:21:26,297 INFO L226 Difference]: Without dead ends: 94 [2024-11-18 13:21:26,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 16 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:21:26,298 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:26,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 81 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:26,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-18 13:21:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 74. [2024-11-18 13:21:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 73 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) [2024-11-18 13:21:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2024-11-18 13:21:26,334 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 30 [2024-11-18 13:21:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:26,334 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2024-11-18 13:21:26,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2024-11-18 13:21:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-18 13:21:26,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:26,335 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:26,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-18 13:21:26,535 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,SelfDestructingSolverStorable23 [2024-11-18 13:21:26,535 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:26,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:26,536 INFO L85 PathProgramCache]: Analyzing trace with hash -143767810, now seen corresponding path program 20 times [2024-11-18 13:21:26,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:26,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570223703] [2024-11-18 13:21:26,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:26,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:26,551 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:26,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:26,753 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:21:26,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:26,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570223703] [2024-11-18 13:21:26,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570223703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:26,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579336032] [2024-11-18 13:21:26,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:26,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:26,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:26,755 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) [2024-11-18 13:21:26,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-18 13:21:26,798 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:26,798 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:26,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-18 13:21:26,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:26,895 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:21:26,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 13:21:27,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579336032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:27,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:27,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 16] total 37 [2024-11-18 13:21:27,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017235000] [2024-11-18 13:21:27,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:27,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-18 13:21:27,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:27,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-18 13:21:27,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1148, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 13:21:27,243 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 37 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:28,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:28,087 INFO L93 Difference]: Finished difference Result 112 states and 135 transitions. [2024-11-18 13:21:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-18 13:21:28,088 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 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 30 [2024-11-18 13:21:28,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:28,088 INFO L225 Difference]: With dead ends: 112 [2024-11-18 13:21:28,088 INFO L226 Difference]: Without dead ends: 91 [2024-11-18 13:21:28,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=352, Invalid=2198, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 13:21:28,089 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:28,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 131 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:21:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-18 13:21:28,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2024-11-18 13:21:28,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1585365853658536) internal successors, (95), 82 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) [2024-11-18 13:21:28,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2024-11-18 13:21:28,132 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 30 [2024-11-18 13:21:28,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:28,133 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2024-11-18 13:21:28,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:28,133 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2024-11-18 13:21:28,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 13:21:28,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:28,133 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:28,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:28,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:28,336 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:28,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:28,337 INFO L85 PathProgramCache]: Analyzing trace with hash -61185409, now seen corresponding path program 21 times [2024-11-18 13:21:28,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:28,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603963639] [2024-11-18 13:21:28,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:28,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:28,355 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 13:21:28,355 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:21:28,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603963639] [2024-11-18 13:21:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603963639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125990239] [2024-11-18 13:21:28,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:28,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:28,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:28,562 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) [2024-11-18 13:21:28,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-18 13:21:28,622 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 13:21:28,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:28,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 13:21:28,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 16 proven. 56 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 13:21:28,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 16 proven. 56 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 13:21:29,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125990239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:29,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:29,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 42 [2024-11-18 13:21:29,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530374085] [2024-11-18 13:21:29,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:29,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-18 13:21:29,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:29,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-18 13:21:29,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1436, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 13:21:29,110 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:30,664 INFO L93 Difference]: Finished difference Result 265 states and 301 transitions. [2024-11-18 13:21:30,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-18 13:21:30,664 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-18 13:21:30,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:30,665 INFO L225 Difference]: With dead ends: 265 [2024-11-18 13:21:30,665 INFO L226 Difference]: Without dead ends: 242 [2024-11-18 13:21:30,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=972, Invalid=3858, Unknown=0, NotChecked=0, Total=4830 [2024-11-18 13:21:30,667 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 242 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:30,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 165 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:21:30,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-18 13:21:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 70. [2024-11-18 13:21:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.144927536231884) internal successors, (79), 69 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:30,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2024-11-18 13:21:30,709 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 32 [2024-11-18 13:21:30,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:30,709 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2024-11-18 13:21:30,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:30,709 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2024-11-18 13:21:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 13:21:30,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:30,709 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:30,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-18 13:21:30,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:30,910 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:30,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:30,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1961547967, now seen corresponding path program 22 times [2024-11-18 13:21:30,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:30,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721781490] [2024-11-18 13:21:30,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:30,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:30,932 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:30,932 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 13:21:31,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:31,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721781490] [2024-11-18 13:21:31,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721781490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:31,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238275382] [2024-11-18 13:21:31,145 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:31,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:31,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:31,147 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) [2024-11-18 13:21:31,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-18 13:21:31,191 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:31,191 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:31,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-18 13:21:31,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 13:21:31,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 13:21:31,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238275382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:31,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:31,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 14] total 34 [2024-11-18 13:21:31,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382626315] [2024-11-18 13:21:31,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:31,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 13:21:31,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:31,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 13:21:31,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 13:21:31,522 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 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) [2024-11-18 13:21:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:32,209 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2024-11-18 13:21:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-18 13:21:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 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) Word has length 32 [2024-11-18 13:21:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:32,209 INFO L225 Difference]: With dead ends: 104 [2024-11-18 13:21:32,210 INFO L226 Difference]: Without dead ends: 84 [2024-11-18 13:21:32,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=288, Invalid=1782, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 13:21:32,210 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:32,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 131 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:21:32,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-18 13:21:32,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2024-11-18 13:21:32,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 74 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) [2024-11-18 13:21:32,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2024-11-18 13:21:32,253 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 32 [2024-11-18 13:21:32,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:32,254 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2024-11-18 13:21:32,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 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) [2024-11-18 13:21:32,254 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2024-11-18 13:21:32,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 13:21:32,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:32,254 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:32,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-18 13:21:32,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-18 13:21:32,455 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:32,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:32,455 INFO L85 PathProgramCache]: Analyzing trace with hash 254889333, now seen corresponding path program 23 times [2024-11-18 13:21:32,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:32,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627293656] [2024-11-18 13:21:32,455 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:21:32,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:32,474 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 13:21:32,474 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 28 proven. 79 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:32,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627293656] [2024-11-18 13:21:32,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627293656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632351039] [2024-11-18 13:21:32,862 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:21:32,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:32,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:32,864 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) [2024-11-18 13:21:32,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-18 13:21:33,011 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 13:21:33,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:33,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-18 13:21:33,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 13:21:33,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 13:21:33,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632351039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:33,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:33,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 12] total 20 [2024-11-18 13:21:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757081097] [2024-11-18 13:21:33,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:33,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 13:21:33,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:33,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 13:21:33,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2024-11-18 13:21:33,292 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:33,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:33,513 INFO L93 Difference]: Finished difference Result 134 states and 157 transitions. [2024-11-18 13:21:33,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 13:21:33,513 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-18 13:21:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:33,514 INFO L225 Difference]: With dead ends: 134 [2024-11-18 13:21:33,514 INFO L226 Difference]: Without dead ends: 121 [2024-11-18 13:21:33,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 55 SyntacticMatches, 19 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2024-11-18 13:21:33,515 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:33,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 79 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:33,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-18 13:21:33,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 78. [2024-11-18 13:21:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.12987012987013) internal successors, (87), 77 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) [2024-11-18 13:21:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2024-11-18 13:21:33,563 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 33 [2024-11-18 13:21:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:33,563 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2024-11-18 13:21:33,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2024-11-18 13:21:33,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-18 13:21:33,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:33,563 INFO L215 NwaCegarLoop]: trace histogram [10, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:33,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:33,764 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,SelfDestructingSolverStorable27 [2024-11-18 13:21:33,764 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:33,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:33,764 INFO L85 PathProgramCache]: Analyzing trace with hash -97767121, now seen corresponding path program 24 times [2024-11-18 13:21:33,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:33,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228835852] [2024-11-18 13:21:33,764 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:21:33,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:33,778 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-18 13:21:33,778 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 13:21:34,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:34,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228835852] [2024-11-18 13:21:34,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228835852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:34,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698643226] [2024-11-18 13:21:34,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:21:34,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:34,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:34,037 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) [2024-11-18 13:21:34,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-18 13:21:34,112 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-18 13:21:34,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:34,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-18 13:21:34,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 13:21:34,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-18 13:21:34,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698643226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:34,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:34,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 18] total 43 [2024-11-18 13:21:34,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533926591] [2024-11-18 13:21:34,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:34,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-18 13:21:34,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:34,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-18 13:21:34,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1575, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 13:21:34,635 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 43 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:36,177 INFO L93 Difference]: Finished difference Result 130 states and 153 transitions. [2024-11-18 13:21:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-18 13:21:36,178 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-18 13:21:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:36,178 INFO L225 Difference]: With dead ends: 130 [2024-11-18 13:21:36,178 INFO L226 Difference]: Without dead ends: 108 [2024-11-18 13:21:36,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=604, Invalid=4508, Unknown=0, NotChecked=0, Total=5112 [2024-11-18 13:21:36,180 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:36,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 211 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:21:36,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-18 13:21:36,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 98. [2024-11-18 13:21:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 97 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2024-11-18 13:21:36,253 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 34 [2024-11-18 13:21:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:36,253 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2024-11-18 13:21:36,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2024-11-18 13:21:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 13:21:36,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:36,253 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:36,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:36,454 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,SelfDestructingSolverStorable28 [2024-11-18 13:21:36,454 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:36,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:36,454 INFO L85 PathProgramCache]: Analyzing trace with hash -638809665, now seen corresponding path program 25 times [2024-11-18 13:21:36,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:36,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452973107] [2024-11-18 13:21:36,454 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:21:36,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 13:21:36,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:36,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452973107] [2024-11-18 13:21:36,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452973107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:36,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864771331] [2024-11-18 13:21:36,700 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:21:36,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:36,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:36,703 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) [2024-11-18 13:21:36,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-18 13:21:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:36,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-18 13:21:36,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:36,865 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 13:21:36,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 13:21:37,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864771331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:37,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:37,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2024-11-18 13:21:37,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075262895] [2024-11-18 13:21:37,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:37,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 13:21:37,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 13:21:37,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:21:37,013 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 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) [2024-11-18 13:21:37,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:37,267 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2024-11-18 13:21:37,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 13:21:37,268 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 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 36 [2024-11-18 13:21:37,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:37,268 INFO L225 Difference]: With dead ends: 132 [2024-11-18 13:21:37,268 INFO L226 Difference]: Without dead ends: 118 [2024-11-18 13:21:37,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 59 SyntacticMatches, 21 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:21:37,269 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:37,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 107 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:37,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-18 13:21:37,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2024-11-18 13:21:37,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.1214953271028036) internal successors, (120), 107 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:37,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2024-11-18 13:21:37,376 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 36 [2024-11-18 13:21:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:37,376 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2024-11-18 13:21:37,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 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) [2024-11-18 13:21:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2024-11-18 13:21:37,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 13:21:37,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:37,377 INFO L215 NwaCegarLoop]: trace histogram [11, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:37,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-18 13:21:37,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:37,578 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:37,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:37,578 INFO L85 PathProgramCache]: Analyzing trace with hash 843931363, now seen corresponding path program 26 times [2024-11-18 13:21:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:37,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705247984] [2024-11-18 13:21:37,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:37,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:37,595 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:37,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 13:21:37,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705247984] [2024-11-18 13:21:37,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705247984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93984010] [2024-11-18 13:21:37,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:37,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:37,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:37,785 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) [2024-11-18 13:21:37,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-18 13:21:37,831 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:37,831 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:37,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-18 13:21:37,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 13:21:37,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 13:21:38,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93984010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:38,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:38,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23, 20] total 42 [2024-11-18 13:21:38,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982233751] [2024-11-18 13:21:38,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:38,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-18 13:21:38,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:38,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-18 13:21:38,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 13:21:38,397 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 42 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 42 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) [2024-11-18 13:21:40,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:40,773 INFO L93 Difference]: Finished difference Result 196 states and 229 transitions. [2024-11-18 13:21:40,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-18 13:21:40,773 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 42 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 37 [2024-11-18 13:21:40,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:40,774 INFO L225 Difference]: With dead ends: 196 [2024-11-18 13:21:40,774 INFO L226 Difference]: Without dead ends: 155 [2024-11-18 13:21:40,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=859, Invalid=5147, Unknown=0, NotChecked=0, Total=6006 [2024-11-18 13:21:40,775 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 46 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:40,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 254 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:21:40,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-18 13:21:40,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2024-11-18 13:21:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.1171875) internal successors, (143), 128 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2024-11-18 13:21:40,871 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 37 [2024-11-18 13:21:40,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:40,871 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2024-11-18 13:21:40,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 42 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) [2024-11-18 13:21:40,871 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2024-11-18 13:21:40,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 13:21:40,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:40,872 INFO L215 NwaCegarLoop]: trace histogram [12, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:40,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:41,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:41,075 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:41,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:41,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2123930255, now seen corresponding path program 27 times [2024-11-18 13:21:41,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:41,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423991901] [2024-11-18 13:21:41,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:41,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:41,105 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 13:21:41,105 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 13:21:41,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:41,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423991901] [2024-11-18 13:21:41,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423991901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:41,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644117934] [2024-11-18 13:21:41,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:41,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:41,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:41,378 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) [2024-11-18 13:21:41,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-18 13:21:41,425 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 13:21:41,425 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:41,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-18 13:21:41,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 13:21:41,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 13:21:42,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644117934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:42,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:42,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 38 [2024-11-18 13:21:42,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360855965] [2024-11-18 13:21:42,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:42,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-18 13:21:42,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:42,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-18 13:21:42,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 13:21:42,074 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand has 38 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:43,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:43,989 INFO L93 Difference]: Finished difference Result 168 states and 188 transitions. [2024-11-18 13:21:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-18 13:21:43,989 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 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 38 [2024-11-18 13:21:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:43,990 INFO L225 Difference]: With dead ends: 168 [2024-11-18 13:21:43,990 INFO L226 Difference]: Without dead ends: 139 [2024-11-18 13:21:43,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 50 SyntacticMatches, 9 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=690, Invalid=3342, Unknown=0, NotChecked=0, Total=4032 [2024-11-18 13:21:43,991 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 60 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:43,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 132 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:21:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-18 13:21:44,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 113. [2024-11-18 13:21:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.1071428571428572) internal successors, (124), 112 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2024-11-18 13:21:44,083 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 38 [2024-11-18 13:21:44,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:44,084 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2024-11-18 13:21:44,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2024-11-18 13:21:44,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 13:21:44,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:44,084 INFO L215 NwaCegarLoop]: trace histogram [12, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:44,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:44,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:44,284 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:44,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:44,285 INFO L85 PathProgramCache]: Analyzing trace with hash 186783363, now seen corresponding path program 28 times [2024-11-18 13:21:44,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:44,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628773558] [2024-11-18 13:21:44,285 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:44,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:44,309 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:44,309 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 13:21:44,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:44,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628773558] [2024-11-18 13:21:44,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628773558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:44,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627011948] [2024-11-18 13:21:44,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:44,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:44,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:44,629 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) [2024-11-18 13:21:44,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-18 13:21:44,672 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:44,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:44,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 13:21:44,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 13:21:44,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 13:21:45,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627011948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:45,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:45,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 51 [2024-11-18 13:21:45,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777012846] [2024-11-18 13:21:45,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:45,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-18 13:21:45,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:45,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-18 13:21:45,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=2137, Unknown=0, NotChecked=0, Total=2550 [2024-11-18 13:21:45,301 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand has 51 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:22:06,018 INFO L93 Difference]: Finished difference Result 367 states and 426 transitions. [2024-11-18 13:22:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2024-11-18 13:22:06,019 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 0 states have call successors, (0), 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 [2024-11-18 13:22:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:22:06,020 INFO L225 Difference]: With dead ends: 367 [2024-11-18 13:22:06,020 INFO L226 Difference]: Without dead ends: 321 [2024-11-18 13:22:06,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20632 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=6802, Invalid=51520, Unknown=0, NotChecked=0, Total=58322 [2024-11-18 13:22:06,023 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 943 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 13:22:06,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 237 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 13:22:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-18 13:22:06,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 158. [2024-11-18 13:22:06,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.1528662420382165) internal successors, (181), 157 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 181 transitions. [2024-11-18 13:22:06,167 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 181 transitions. Word has length 39 [2024-11-18 13:22:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:22:06,167 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 181 transitions. [2024-11-18 13:22:06,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 181 transitions. [2024-11-18 13:22:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-18 13:22:06,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:22:06,168 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:22:06,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-18 13:22:06,368 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,SelfDestructingSolverStorable32 [2024-11-18 13:22:06,368 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:22:06,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:22:06,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1220951349, now seen corresponding path program 29 times [2024-11-18 13:22:06,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:22:06,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600336650] [2024-11-18 13:22:06,369 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:22:06,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:22:06,393 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 13:22:06,393 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 45 proven. 119 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:22:06,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:22:06,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600336650] [2024-11-18 13:22:06,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600336650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:22:06,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778525211] [2024-11-18 13:22:06,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:22:06,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:06,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:22:06,893 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) [2024-11-18 13:22:06,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-18 13:22:07,014 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 13:22:07,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:07,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-18 13:22:07,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:22:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-18 13:22:07,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:22:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-18 13:22:07,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778525211] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:22:07,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:22:07,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14, 14] total 24 [2024-11-18 13:22:07,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658770556] [2024-11-18 13:22:07,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:22:07,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 13:22:07,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:22:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 13:22:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2024-11-18 13:22:07,440 INFO L87 Difference]: Start difference. First operand 158 states and 181 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:07,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:22:07,863 INFO L93 Difference]: Finished difference Result 231 states and 271 transitions. [2024-11-18 13:22:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 13:22:07,864 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 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 [2024-11-18 13:22:07,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:22:07,865 INFO L225 Difference]: With dead ends: 231 [2024-11-18 13:22:07,865 INFO L226 Difference]: Without dead ends: 216 [2024-11-18 13:22:07,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 65 SyntacticMatches, 23 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2024-11-18 13:22:07,865 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:22:07,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 92 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:22:07,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-18 13:22:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 169. [2024-11-18 13:22:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.1488095238095237) internal successors, (193), 168 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2024-11-18 13:22:08,021 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 39 [2024-11-18 13:22:08,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:22:08,022 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2024-11-18 13:22:08,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:08,022 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2024-11-18 13:22:08,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:22:08,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:22:08,022 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:22:08,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-18 13:22:08,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:08,223 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:22:08,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:22:08,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1735291263, now seen corresponding path program 30 times [2024-11-18 13:22:08,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:22:08,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225637284] [2024-11-18 13:22:08,223 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:22:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:22:08,249 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-18 13:22:08,249 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 13:22:08,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:22:08,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225637284] [2024-11-18 13:22:08,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225637284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:22:08,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766013079] [2024-11-18 13:22:08,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:22:08,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:08,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:22:08,529 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) [2024-11-18 13:22:08,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-18 13:22:08,641 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-18 13:22:08,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:08,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-18 13:22:08,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:22:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 13:22:08,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:22:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 13:22:08,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766013079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:22:08,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:22:08,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2024-11-18 13:22:08,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921343271] [2024-11-18 13:22:08,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:22:08,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 13:22:08,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:22:08,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 13:22:08,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2024-11-18 13:22:08,990 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:22:09,355 INFO L93 Difference]: Finished difference Result 215 states and 242 transitions. [2024-11-18 13:22:09,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 13:22:09,355 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-18 13:22:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:22:09,356 INFO L225 Difference]: With dead ends: 215 [2024-11-18 13:22:09,356 INFO L226 Difference]: Without dead ends: 199 [2024-11-18 13:22:09,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 67 SyntacticMatches, 27 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2024-11-18 13:22:09,356 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:22:09,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 152 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:22:09,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-18 13:22:09,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 180. [2024-11-18 13:22:09,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.1452513966480447) internal successors, (205), 179 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 205 transitions. [2024-11-18 13:22:09,532 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 205 transitions. Word has length 42 [2024-11-18 13:22:09,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:22:09,532 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 205 transitions. [2024-11-18 13:22:09,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:09,532 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 205 transitions. [2024-11-18 13:22:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-18 13:22:09,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:22:09,532 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:22:09,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-18 13:22:09,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:09,733 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:22:09,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:22:09,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2143380830, now seen corresponding path program 31 times [2024-11-18 13:22:09,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:22:09,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827270136] [2024-11-18 13:22:09,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:22:09,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:22:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:22:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 13:22:09,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:22:09,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827270136] [2024-11-18 13:22:09,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827270136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:22:09,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355378382] [2024-11-18 13:22:09,937 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:22:09,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:09,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:22:09,938 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) [2024-11-18 13:22:09,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-18 13:22:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:22:09,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-18 13:22:09,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:22:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:22:10,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:22:10,592 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 13:22:10,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355378382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:22:10,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:22:10,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25, 22] total 46 [2024-11-18 13:22:10,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156938418] [2024-11-18 13:22:10,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:22:10,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-18 13:22:10,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:22:10,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-18 13:22:10,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=1498, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 13:22:10,593 INFO L87 Difference]: Start difference. First operand 180 states and 205 transitions. Second operand has 46 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 46 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) [2024-11-18 13:22:14,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:22:14,158 INFO L93 Difference]: Finished difference Result 470 states and 521 transitions. [2024-11-18 13:22:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-18 13:22:14,158 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 46 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 42 [2024-11-18 13:22:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:22:14,160 INFO L225 Difference]: With dead ends: 470 [2024-11-18 13:22:14,160 INFO L226 Difference]: Without dead ends: 465 [2024-11-18 13:22:14,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2968 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2534, Invalid=6778, Unknown=0, NotChecked=0, Total=9312 [2024-11-18 13:22:14,161 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 321 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:22:14,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 262 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:22:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2024-11-18 13:22:14,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 185. [2024-11-18 13:22:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.141304347826087) internal successors, (210), 184 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 210 transitions. [2024-11-18 13:22:14,356 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 210 transitions. Word has length 42 [2024-11-18 13:22:14,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:22:14,356 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 210 transitions. [2024-11-18 13:22:14,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 46 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) [2024-11-18 13:22:14,356 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 210 transitions. [2024-11-18 13:22:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 13:22:14,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:22:14,357 INFO L215 NwaCegarLoop]: trace histogram [16, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:22:14,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-18 13:22:14,557 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,SelfDestructingSolverStorable35 [2024-11-18 13:22:14,557 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:22:14,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:22:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash 838293237, now seen corresponding path program 32 times [2024-11-18 13:22:14,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:22:14,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202758491] [2024-11-18 13:22:14,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:22:14,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:22:14,583 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:22:14,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 191 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-18 13:22:15,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:22:15,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202758491] [2024-11-18 13:22:15,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202758491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:22:15,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087104441] [2024-11-18 13:22:15,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:22:15,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:15,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:22:15,031 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) [2024-11-18 13:22:15,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-18 13:22:15,091 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:22:15,092 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:15,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-18 13:22:15,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:22:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 66 proven. 110 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 13:22:15,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:22:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 66 proven. 110 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 13:22:16,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087104441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:22:16,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:22:16,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 24] total 63 [2024-11-18 13:22:16,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142672895] [2024-11-18 13:22:16,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:22:16,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-18 13:22:16,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:22:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-18 13:22:16,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=3393, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 13:22:16,091 INFO L87 Difference]: Start difference. First operand 185 states and 210 transitions. Second operand has 63 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 63 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) [2024-11-18 13:22:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:22:21,079 INFO L93 Difference]: Finished difference Result 453 states and 493 transitions. [2024-11-18 13:22:21,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-18 13:22:21,079 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 63 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 45 [2024-11-18 13:22:21,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:22:21,081 INFO L225 Difference]: With dead ends: 453 [2024-11-18 13:22:21,081 INFO L226 Difference]: Without dead ends: 420 [2024-11-18 13:22:21,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3327 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2493, Invalid=11313, Unknown=0, NotChecked=0, Total=13806 [2024-11-18 13:22:21,082 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 364 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 13:22:21,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 273 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 13:22:21,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-18 13:22:21,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 156. [2024-11-18 13:22:21,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.1483870967741936) internal successors, (178), 155 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 178 transitions. [2024-11-18 13:22:21,252 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 178 transitions. Word has length 45 [2024-11-18 13:22:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:22:21,252 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 178 transitions. [2024-11-18 13:22:21,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 63 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) [2024-11-18 13:22:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 178 transitions. [2024-11-18 13:22:21,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-18 13:22:21,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:22:21,253 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:22:21,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-18 13:22:21,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-18 13:22:21,453 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:22:21,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:22:21,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1833254133, now seen corresponding path program 33 times [2024-11-18 13:22:21,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:22:21,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415889126] [2024-11-18 13:22:21,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:22:21,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:22:21,478 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-18 13:22:21,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 13:22:21,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:22:21,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415889126] [2024-11-18 13:22:21,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415889126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:22:21,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732156947] [2024-11-18 13:22:21,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:22:21,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:21,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:22:21,745 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) [2024-11-18 13:22:21,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-18 13:22:21,861 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-18 13:22:21,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:21,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-18 13:22:21,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:22:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 13:22:21,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:22:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 13:22:22,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732156947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:22:22,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:22:22,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 17 [2024-11-18 13:22:22,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194384626] [2024-11-18 13:22:22,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:22:22,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 13:22:22,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:22:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 13:22:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:22:22,182 INFO L87 Difference]: Start difference. First operand 156 states and 178 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:22,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:22:22,635 INFO L93 Difference]: Finished difference Result 205 states and 230 transitions. [2024-11-18 13:22:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 13:22:22,635 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-18 13:22:22,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:22:22,636 INFO L225 Difference]: With dead ends: 205 [2024-11-18 13:22:22,636 INFO L226 Difference]: Without dead ends: 188 [2024-11-18 13:22:22,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 73 SyntacticMatches, 28 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:22:22,637 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:22:22,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 150 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:22:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-18 13:22:22,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 170. [2024-11-18 13:22:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.1479289940828403) internal successors, (194), 169 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:22,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 194 transitions. [2024-11-18 13:22:22,840 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 194 transitions. Word has length 45 [2024-11-18 13:22:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:22:22,840 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 194 transitions. [2024-11-18 13:22:22,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 194 transitions. [2024-11-18 13:22:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 13:22:22,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:22:22,841 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:22:22,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-18 13:22:23,041 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,SelfDestructingSolverStorable37 [2024-11-18 13:22:23,042 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:22:23,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:22:23,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1409332913, now seen corresponding path program 34 times [2024-11-18 13:22:23,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:22:23,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99840251] [2024-11-18 13:22:23,042 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:22:23,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:22:23,071 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:22:23,071 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 13 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 13:22:23,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:22:23,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99840251] [2024-11-18 13:22:23,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99840251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:22:23,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408010739] [2024-11-18 13:22:23,389 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:22:23,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:23,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:22:23,390 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) [2024-11-18 13:22:23,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-18 13:22:23,439 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:22:23,439 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:23,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-18 13:22:23,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:22:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 13:22:23,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:22:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 13:22:24,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408010739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:22:24,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:22:24,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 29] total 56 [2024-11-18 13:22:24,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567182816] [2024-11-18 13:22:24,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:22:24,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-18 13:22:24,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:22:24,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-18 13:22:24,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=2631, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 13:22:24,272 INFO L87 Difference]: Start difference. First operand 170 states and 194 transitions. Second operand has 56 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 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)