./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 023d838f 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.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:20:15,436 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:20:15,510 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:20:15,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:20:15,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:20:15,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:20:15,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:20:15,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:20:15,535 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:20:15,536 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:20:15,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:20:15,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:20:15,537 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:20:15,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:20:15,538 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:20:15,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:20:15,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:20:15,539 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:20:15,539 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:20:15,540 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:20:15,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:20:15,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:20:15,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:20:15,541 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:20:15,542 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:20:15,542 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:20:15,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:20:15,546 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:20:15,546 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:20:15,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:20:15,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:20:15,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:20:15,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:20:15,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:20:15,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:20:15,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:20:15,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:20:15,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:20:15,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:20:15,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:20:15,552 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:20:15,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:20:15,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be02771c62bfe2ce14e3e1aa527948281d29318788bbe261fd0d537b1dc5e291 [2024-11-09 22:20:15,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:20:15,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:20:15,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:20:15,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:20:15,794 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:20:15,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/in-de32.c [2024-11-09 22:20:17,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:20:17,435 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:20:17,436 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de32.c [2024-11-09 22:20:17,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6b826ba/0a2a824ca4b2484a828e3571efeed78d/FLAG4b5f75544 [2024-11-09 22:20:17,453 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6b826ba/0a2a824ca4b2484a828e3571efeed78d [2024-11-09 22:20:17,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:20:17,456 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:20:17,458 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:20:17,458 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:20:17,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:20:17,464 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77fc01e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17, skipping insertion in model container [2024-11-09 22:20:17,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,485 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:20:17,636 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] [2024-11-09 22:20:17,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:20:17,659 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:20:17,669 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] [2024-11-09 22:20:17,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:20:17,686 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:20:17,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17 WrapperNode [2024-11-09 22:20:17,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:20:17,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:20:17,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:20:17,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:20:17,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,703 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,716 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2024-11-09 22:20:17,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:20:17,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:20:17,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:20:17,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:20:17,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,728 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,738 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]. [2024-11-09 22:20:17,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,738 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,741 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,745 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:20:17,748 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:20:17,748 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:20:17,748 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:20:17,749 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (1/1) ... [2024-11-09 22:20:17,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:20:17,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:17,792 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) [2024-11-09 22:20:17,796 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 [2024-11-09 22:20:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:20:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:20:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:20:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:20:17,920 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:20:17,922 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:20:18,059 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-09 22:20:18,060 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:20:18,078 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:20:18,080 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:20:18,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:20:18 BoogieIcfgContainer [2024-11-09 22:20:18,081 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:20:18,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:20:18,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:20:18,087 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:20:18,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:20:17" (1/3) ... [2024-11-09 22:20:18,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb350bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:20:18, skipping insertion in model container [2024-11-09 22:20:18,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:17" (2/3) ... [2024-11-09 22:20:18,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb350bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:20:18, skipping insertion in model container [2024-11-09 22:20:18,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:20:18" (3/3) ... [2024-11-09 22:20:18,092 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de32.c [2024-11-09 22:20:18,108 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:20:18,109 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:20:18,180 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:20:18,186 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;@3dcf63fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:20:18,187 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:20:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:18,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 22:20:18,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:18,208 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:18,208 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:18,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:18,212 INFO L85 PathProgramCache]: Analyzing trace with hash 896569361, now seen corresponding path program 1 times [2024-11-09 22:20:18,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:18,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862388930] [2024-11-09 22:20:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:18,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:20:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862388930] [2024-11-09 22:20:18,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862388930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:20:18,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:20:18,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:20:18,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891759195] [2024-11-09 22:20:18,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:20:18,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:20:18,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:18,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:20:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:20:18,377 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2024-11-09 22:20:18,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:18,390 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2024-11-09 22:20:18,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:20:18,392 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2024-11-09 22:20:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:18,399 INFO L225 Difference]: With dead ends: 33 [2024-11-09 22:20:18,399 INFO L226 Difference]: Without dead ends: 14 [2024-11-09 22:20:18,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:20:18,405 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:18,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:20:18,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-09 22:20:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-09 22:20:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2024-11-09 22:20:18,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-09 22:20:18,435 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2024-11-09 22:20:18,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:18,436 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-09 22:20:18,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2024-11-09 22:20:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-09 22:20:18,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 22:20:18,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:18,438 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:18,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:20:18,439 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:18,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:18,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2027017585, now seen corresponding path program 1 times [2024-11-09 22:20:18,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:18,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389885872] [2024-11-09 22:20:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:18,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:20:18,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:18,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389885872] [2024-11-09 22:20:18,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389885872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:20:18,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:20:18,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 22:20:18,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340939957] [2024-11-09 22:20:18,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:20:18,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:20:18,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:18,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:20:18,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:20:18,713 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:18,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:18,748 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-11-09 22:20:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:20:18,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 [2024-11-09 22:20:18,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:18,753 INFO L225 Difference]: With dead ends: 23 [2024-11-09 22:20:18,753 INFO L226 Difference]: Without dead ends: 18 [2024-11-09 22:20:18,754 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 [2024-11-09 22:20:18,755 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:18,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:20:18,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-09 22:20:18,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-09 22:20:18,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-09 22:20:18,761 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2024-11-09 22:20:18,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:18,762 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-09 22:20:18,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:18,762 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-09 22:20:18,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 22:20:18,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:18,764 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:18,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:20:18,765 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:18,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:18,765 INFO L85 PathProgramCache]: Analyzing trace with hash -29314480, now seen corresponding path program 1 times [2024-11-09 22:20:18,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:18,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867233488] [2024-11-09 22:20:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:18,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:20:18,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:18,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867233488] [2024-11-09 22:20:18,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867233488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:20:18,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:20:18,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 22:20:18,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928181870] [2024-11-09 22:20:18,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:20:18,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 22:20:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 22:20:18,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 22:20:18,868 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2024-11-09 22:20:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:18,892 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2024-11-09 22:20:18,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 22:20:18,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) Word has length 15 [2024-11-09 22:20:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:18,893 INFO L225 Difference]: With dead ends: 36 [2024-11-09 22:20:18,893 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 22:20:18,894 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 [2024-11-09 22:20:18,895 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 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 [2024-11-09 22:20:18,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:20:18,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 22:20:18,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 22:20:18,907 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) [2024-11-09 22:20:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-09 22:20:18,908 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 15 [2024-11-09 22:20:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:18,909 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-09 22:20:18,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2024-11-09 22:20:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-09 22:20:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 22:20:18,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:18,910 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:18,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 22:20:18,910 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:18,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1772718736, now seen corresponding path program 1 times [2024-11-09 22:20:18,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:18,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449291525] [2024-11-09 22:20:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:20:19,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:19,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449291525] [2024-11-09 22:20:19,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449291525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:20:19,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:20:19,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 22:20:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698438041] [2024-11-09 22:20:19,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:20:19,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:20:19,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:19,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:20:19,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:20:19,015 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2024-11-09 22:20:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:19,050 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2024-11-09 22:20:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:20:19,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) Word has length 15 [2024-11-09 22:20:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:19,052 INFO L225 Difference]: With dead ends: 32 [2024-11-09 22:20:19,052 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 22:20:19,052 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 [2024-11-09 22:20:19,054 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 36 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 [2024-11-09 22:20:19,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 36 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:20:19,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 22:20:19,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 22:20:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:19,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-09 22:20:19,059 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2024-11-09 22:20:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:19,059 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-09 22:20:19,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2024-11-09 22:20:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-09 22:20:19,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 22:20:19,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:19,061 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:19,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 22:20:19,061 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:19,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:19,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1639906609, now seen corresponding path program 1 times [2024-11-09 22:20:19,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:19,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413355119] [2024-11-09 22:20:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:19,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:19,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:19,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413355119] [2024-11-09 22:20:19,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413355119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:19,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359512637] [2024-11-09 22:20:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:19,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:19,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:19,185 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) [2024-11-09 22:20:19,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:20:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:19,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 22:20:19,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:19,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:19,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359512637] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:19,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:20:19,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-11-09 22:20:19,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743775427] [2024-11-09 22:20:19,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:20:19,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:20:19,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:19,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:20:19,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:20:19,365 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2024-11-09 22:20:19,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:19,395 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-11-09 22:20:19,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:20:19,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) Word has length 17 [2024-11-09 22:20:19,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:19,398 INFO L225 Difference]: With dead ends: 27 [2024-11-09 22:20:19,398 INFO L226 Difference]: Without dead ends: 18 [2024-11-09 22:20:19,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:20:19,399 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:19,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:20:19,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-09 22:20:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-09 22:20:19,406 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) [2024-11-09 22:20:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-09 22:20:19,407 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 17 [2024-11-09 22:20:19,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:19,409 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-09 22:20:19,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2024-11-09 22:20:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-09 22:20:19,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 22:20:19,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:19,410 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:19,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:19,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:19,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:19,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:19,615 INFO L85 PathProgramCache]: Analyzing trace with hash -853027471, now seen corresponding path program 1 times [2024-11-09 22:20:19,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:19,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793266834] [2024-11-09 22:20:19,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:19,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:19,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:19,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793266834] [2024-11-09 22:20:19,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793266834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:19,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800282854] [2024-11-09 22:20:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:19,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:19,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:19,697 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) [2024-11-09 22:20:19,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:20:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:19,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 22:20:19,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:20:19,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:19,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800282854] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:19,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:20:19,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2024-11-09 22:20:19,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980295097] [2024-11-09 22:20:19,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:20:19,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:20:19,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:19,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:20:19,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:20:19,850 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2024-11-09 22:20:19,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:19,867 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-11-09 22:20:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:20:19,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) Word has length 17 [2024-11-09 22:20:19,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:19,869 INFO L225 Difference]: With dead ends: 25 [2024-11-09 22:20:19,869 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 22:20:19,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:20:19,870 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 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 [2024-11-09 22:20:19,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:20:19,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 22:20:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 22:20:19,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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) [2024-11-09 22:20:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-11-09 22:20:19,877 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2024-11-09 22:20:19,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:19,877 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-11-09 22:20:19,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2024-11-09 22:20:19,878 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-11-09 22:20:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:20:19,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:19,879 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:19,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:20:20,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 22:20:20,084 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:20,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:20,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1793674672, now seen corresponding path program 1 times [2024-11-09 22:20:20,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:20,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818475410] [2024-11-09 22:20:20,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:20,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:20,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:20,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818475410] [2024-11-09 22:20:20,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818475410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:20,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883968660] [2024-11-09 22:20:20,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:20,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:20,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:20,251 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) [2024-11-09 22:20:20,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:20:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:20,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 22:20:20,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:20,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:20,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883968660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:20,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:20,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-09 22:20:20,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445785627] [2024-11-09 22:20:20,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:20,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:20:20,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:20,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:20:20,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:20:20,529 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2024-11-09 22:20:20,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:20,565 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-11-09 22:20:20,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:20:20,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) Word has length 19 [2024-11-09 22:20:20,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:20,567 INFO L225 Difference]: With dead ends: 31 [2024-11-09 22:20:20,567 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 22:20:20,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:20:20,570 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:20,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:20:20,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 22:20:20,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-09 22:20:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 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) [2024-11-09 22:20:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-09 22:20:20,579 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 19 [2024-11-09 22:20:20,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:20,579 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-09 22:20:20,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2024-11-09 22:20:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-09 22:20:20,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 22:20:20,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:20,582 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:20,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:20,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:20,786 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:20,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:20,786 INFO L85 PathProgramCache]: Analyzing trace with hash 482464623, now seen corresponding path program 2 times [2024-11-09 22:20:20,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:20,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838589046] [2024-11-09 22:20:20,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:20,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:20,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:20,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838589046] [2024-11-09 22:20:20,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838589046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:20,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639884989] [2024-11-09 22:20:20,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:20:20,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:20,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:20,864 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) [2024-11-09 22:20:20,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:20:20,905 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:20:20,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:20,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:20:20,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:20,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:21,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639884989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:21,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:21,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 8 [2024-11-09 22:20:21,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348395758] [2024-11-09 22:20:21,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:21,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 22:20:21,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:21,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 22:20:21,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:20:21,014 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:21,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:21,092 INFO L93 Difference]: Finished difference Result 97 states and 116 transitions. [2024-11-09 22:20:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 22:20:21,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 [2024-11-09 22:20:21,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:21,094 INFO L225 Difference]: With dead ends: 97 [2024-11-09 22:20:21,094 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 22:20:21,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:20:21,095 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:21,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 109 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:20:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 22:20:21,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2024-11-09 22:20:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 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) [2024-11-09 22:20:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2024-11-09 22:20:21,112 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 21 [2024-11-09 22:20:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:21,112 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2024-11-09 22:20:21,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:21,112 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2024-11-09 22:20:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 22:20:21,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:21,113 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:21,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:21,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:21,318 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:21,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:21,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1364564911, now seen corresponding path program 3 times [2024-11-09 22:20:21,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:21,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903586074] [2024-11-09 22:20:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:21,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:21,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:21,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903586074] [2024-11-09 22:20:21,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903586074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:21,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876438258] [2024-11-09 22:20:21,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:20:21,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:21,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:21,401 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) [2024-11-09 22:20:21,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 22:20:21,450 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 22:20:21,450 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:21,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 22:20:21,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:21,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:20:21,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876438258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:21,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:21,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 22:20:21,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643982378] [2024-11-09 22:20:21,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:21,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 22:20:21,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:21,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 22:20:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:20:21,590 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 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) [2024-11-09 22:20:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:21,670 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2024-11-09 22:20:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 22:20:21,673 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 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 21 [2024-11-09 22:20:21,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:21,674 INFO L225 Difference]: With dead ends: 83 [2024-11-09 22:20:21,674 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 22:20:21,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:20:21,675 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 22 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:21,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 88 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:20:21,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 22:20:21,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 37. [2024-11-09 22:20:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-11-09 22:20:21,688 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-11-09 22:20:21,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:21,688 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-11-09 22:20:21,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 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) [2024-11-09 22:20:21,689 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-11-09 22:20:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 22:20:21,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:21,690 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:21,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 22:20:21,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:21,895 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:21,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1966780816, now seen corresponding path program 4 times [2024-11-09 22:20:21,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:21,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390520860] [2024-11-09 22:20:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:21,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:20:21,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:21,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390520860] [2024-11-09 22:20:21,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390520860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:21,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947037172] [2024-11-09 22:20:21,979 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:20:21,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:21,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:21,981 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) [2024-11-09 22:20:21,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 22:20:22,023 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:20:22,023 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:22,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 22:20:22,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:20:22,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:20:22,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947037172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:22,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:22,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-09 22:20:22,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309141059] [2024-11-09 22:20:22,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:22,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 22:20:22,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:22,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 22:20:22,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:20:22,168 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:22,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:22,275 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2024-11-09 22:20:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 22:20:22,276 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 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 23 [2024-11-09 22:20:22,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:22,278 INFO L225 Difference]: With dead ends: 77 [2024-11-09 22:20:22,278 INFO L226 Difference]: Without dead ends: 58 [2024-11-09 22:20:22,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:20:22,279 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:22,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 103 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:20:22,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-09 22:20:22,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-09 22:20:22,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2024-11-09 22:20:22,304 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 23 [2024-11-09 22:20:22,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:22,305 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2024-11-09 22:20:22,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:22,306 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2024-11-09 22:20:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 22:20:22,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:22,307 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:22,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 22:20:22,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:22,512 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:22,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash -492455185, now seen corresponding path program 5 times [2024-11-09 22:20:22,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:22,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777428230] [2024-11-09 22:20:22,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:22,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:20:22,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:22,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777428230] [2024-11-09 22:20:22,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777428230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:22,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134736281] [2024-11-09 22:20:22,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:20:22,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:22,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:22,684 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) [2024-11-09 22:20:22,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 22:20:22,727 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 22:20:22,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:22,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 22:20:22,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:20:22,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:20:22,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134736281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:22,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:22,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-11-09 22:20:22,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083245661] [2024-11-09 22:20:22,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:22,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:20:22,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:22,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:20:22,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:20:22,835 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:22,881 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2024-11-09 22:20:22,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:20:22,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 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 [2024-11-09 22:20:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:22,882 INFO L225 Difference]: With dead ends: 85 [2024-11-09 22:20:22,882 INFO L226 Difference]: Without dead ends: 74 [2024-11-09 22:20:22,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:20:22,883 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:22,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:20:22,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-09 22:20:22,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2024-11-09 22:20:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.152542372881356) internal successors, (68), 59 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:22,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-09 22:20:22,896 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 25 [2024-11-09 22:20:22,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:22,896 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-09 22:20:22,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-09 22:20:22,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 22:20:22,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:22,897 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:22,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 22:20:23,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:23,102 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:23,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:23,102 INFO L85 PathProgramCache]: Analyzing trace with hash -445830547, now seen corresponding path program 6 times [2024-11-09 22:20:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:23,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004632319] [2024-11-09 22:20:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:23,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 22:20:23,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:23,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004632319] [2024-11-09 22:20:23,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004632319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:23,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273219800] [2024-11-09 22:20:23,199 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:20:23,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:23,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:23,201 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) [2024-11-09 22:20:23,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 22:20:23,257 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-09 22:20:23,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:23,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 22:20:23,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:20:23,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:20:23,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273219800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:23,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:23,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 18 [2024-11-09 22:20:23,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653968527] [2024-11-09 22:20:23,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:23,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 22:20:23,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:23,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 22:20:23,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-09 22:20:23,521 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 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) [2024-11-09 22:20:24,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:24,023 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2024-11-09 22:20:24,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 22:20:24,024 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 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 29 [2024-11-09 22:20:24,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:24,024 INFO L225 Difference]: With dead ends: 123 [2024-11-09 22:20:24,024 INFO L226 Difference]: Without dead ends: 93 [2024-11-09 22:20:24,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 22:20:24,026 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 84 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:24,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 164 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:20:24,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-09 22:20:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2024-11-09 22:20:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2024-11-09 22:20:24,040 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 29 [2024-11-09 22:20:24,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:24,040 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2024-11-09 22:20:24,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 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) [2024-11-09 22:20:24,040 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2024-11-09 22:20:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:20:24,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:24,041 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:24,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 22:20:24,241 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,SelfDestructingSolverStorable11 [2024-11-09 22:20:24,242 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:24,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:24,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1547149134, now seen corresponding path program 7 times [2024-11-09 22:20:24,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:24,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50982034] [2024-11-09 22:20:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:24,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:20:24,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50982034] [2024-11-09 22:20:24,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50982034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247583255] [2024-11-09 22:20:24,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:20:24,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:24,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:24,438 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) [2024-11-09 22:20:24,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 22:20:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:24,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 22:20:24,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:20:24,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:20:24,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247583255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:24,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:24,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-11-09 22:20:24,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735663254] [2024-11-09 22:20:24,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:24,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 22:20:24,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:24,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 22:20:24,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:20:24,622 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 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) [2024-11-09 22:20:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:24,687 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2024-11-09 22:20:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:20:24,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-09 22:20:24,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:24,689 INFO L225 Difference]: With dead ends: 99 [2024-11-09 22:20:24,689 INFO L226 Difference]: Without dead ends: 94 [2024-11-09 22:20:24,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 8 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:20:24,691 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:24,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 121 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:20:24,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-09 22:20:24,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2024-11-09 22:20:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 78 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2024-11-09 22:20:24,713 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 31 [2024-11-09 22:20:24,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:24,714 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2024-11-09 22:20:24,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 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) [2024-11-09 22:20:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2024-11-09 22:20:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:20:24,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:24,716 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:24,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 22:20:24,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 22:20:24,916 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:24,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1345954096, now seen corresponding path program 8 times [2024-11-09 22:20:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:24,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136125683] [2024-11-09 22:20:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:20:25,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:25,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136125683] [2024-11-09 22:20:25,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136125683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:25,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867657333] [2024-11-09 22:20:25,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:20:25,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:25,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:25,053 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) [2024-11-09 22:20:25,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 22:20:25,099 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:20:25,099 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:25,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 22:20:25,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:20:25,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 22:20:25,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867657333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:25,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:25,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 19 [2024-11-09 22:20:25,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555845236] [2024-11-09 22:20:25,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:25,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 22:20:25,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:25,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 22:20:25,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:20:25,316 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:25,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:25,542 INFO L93 Difference]: Finished difference Result 126 states and 144 transitions. [2024-11-09 22:20:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 22:20:25,542 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-09 22:20:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:25,543 INFO L225 Difference]: With dead ends: 126 [2024-11-09 22:20:25,543 INFO L226 Difference]: Without dead ends: 99 [2024-11-09 22:20:25,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2024-11-09 22:20:25,544 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:25,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 211 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:20:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-09 22:20:25,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2024-11-09 22:20:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.1304347826086956) internal successors, (104), 92 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2024-11-09 22:20:25,571 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 31 [2024-11-09 22:20:25,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:25,572 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2024-11-09 22:20:25,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:25,572 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2024-11-09 22:20:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 22:20:25,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:25,575 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:25,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:25,778 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,SelfDestructingSolverStorable13 [2024-11-09 22:20:25,779 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:25,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1249935375, now seen corresponding path program 9 times [2024-11-09 22:20:25,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:25,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165499118] [2024-11-09 22:20:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:25,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 22:20:25,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:25,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165499118] [2024-11-09 22:20:25,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165499118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:25,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389675583] [2024-11-09 22:20:25,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:20:25,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:25,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:25,953 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) [2024-11-09 22:20:25,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 22:20:25,993 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 22:20:25,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:25,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 22:20:25,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:20:26,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:20:26,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389675583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:26,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:26,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 21 [2024-11-09 22:20:26,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941871669] [2024-11-09 22:20:26,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:26,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 22:20:26,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:26,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 22:20:26,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:20:26,309 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:26,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:26,835 INFO L93 Difference]: Finished difference Result 147 states and 168 transitions. [2024-11-09 22:20:26,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 22:20:26,835 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-09 22:20:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:26,836 INFO L225 Difference]: With dead ends: 147 [2024-11-09 22:20:26,836 INFO L226 Difference]: Without dead ends: 132 [2024-11-09 22:20:26,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=360, Invalid=1362, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 22:20:26,838 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 165 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:26,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 307 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:20:26,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-09 22:20:26,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 95. [2024-11-09 22:20:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.1170212765957446) internal successors, (105), 94 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:26,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2024-11-09 22:20:26,861 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 33 [2024-11-09 22:20:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:26,862 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2024-11-09 22:20:26,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:26,862 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2024-11-09 22:20:26,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 22:20:26,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:26,864 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:26,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 22:20:27,068 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,SelfDestructingSolverStorable14 [2024-11-09 22:20:27,069 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:27,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:27,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1273911476, now seen corresponding path program 10 times [2024-11-09 22:20:27,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:27,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67359293] [2024-11-09 22:20:27,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:27,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 22:20:27,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:27,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67359293] [2024-11-09 22:20:27,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67359293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:27,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857134712] [2024-11-09 22:20:27,183 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:20:27,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:27,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:27,184 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) [2024-11-09 22:20:27,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 22:20:27,231 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:20:27,232 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:27,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 22:20:27,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:20:27,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:20:27,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857134712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:27,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:27,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 22 [2024-11-09 22:20:27,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22801120] [2024-11-09 22:20:27,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:27,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 22:20:27,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:27,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 22:20:27,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:20:27,540 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:28,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:28,511 INFO L93 Difference]: Finished difference Result 186 states and 207 transitions. [2024-11-09 22:20:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-09 22:20:28,511 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 22:20:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:28,512 INFO L225 Difference]: With dead ends: 186 [2024-11-09 22:20:28,512 INFO L226 Difference]: Without dead ends: 152 [2024-11-09 22:20:28,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=399, Invalid=2463, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 22:20:28,514 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 172 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:28,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 368 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:20:28,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-09 22:20:28,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 110. [2024-11-09 22:20:28,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.128440366972477) internal successors, (123), 109 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2024-11-09 22:20:28,537 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 35 [2024-11-09 22:20:28,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:28,537 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2024-11-09 22:20:28,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2024-11-09 22:20:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 22:20:28,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:28,538 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:28,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 22:20:28,738 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,SelfDestructingSolverStorable15 [2024-11-09 22:20:28,738 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:28,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:28,739 INFO L85 PathProgramCache]: Analyzing trace with hash -50262163, now seen corresponding path program 11 times [2024-11-09 22:20:28,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:28,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933260246] [2024-11-09 22:20:28,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:28,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 22:20:28,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:28,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933260246] [2024-11-09 22:20:28,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933260246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:28,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61065152] [2024-11-09 22:20:28,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:20:28,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:28,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:28,924 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) [2024-11-09 22:20:28,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 22:20:28,989 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-09 22:20:28,989 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:28,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 22:20:28,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 22:20:29,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 22:20:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61065152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:29,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:29,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-11-09 22:20:29,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397577551] [2024-11-09 22:20:29,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:29,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 22:20:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:29,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 22:20:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-09 22:20:29,149 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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) [2024-11-09 22:20:29,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:29,219 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2024-11-09 22:20:29,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 22:20:29,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 22:20:29,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:29,220 INFO L225 Difference]: With dead ends: 144 [2024-11-09 22:20:29,220 INFO L226 Difference]: Without dead ends: 129 [2024-11-09 22:20:29,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 66 SyntacticMatches, 11 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-09 22:20:29,221 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 131 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 [2024-11-09 22:20:29,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 131 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:20:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-09 22:20:29,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 120. [2024-11-09 22:20:29,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.1260504201680672) internal successors, (134), 119 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:29,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2024-11-09 22:20:29,245 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 37 [2024-11-09 22:20:29,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:29,246 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2024-11-09 22:20:29,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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) [2024-11-09 22:20:29,246 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2024-11-09 22:20:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 22:20:29,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:29,247 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:29,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:29,450 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,SelfDestructingSolverStorable16 [2024-11-09 22:20:29,451 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:29,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:29,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2128430576, now seen corresponding path program 12 times [2024-11-09 22:20:29,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:29,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684602558] [2024-11-09 22:20:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:29,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 22:20:29,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:29,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684602558] [2024-11-09 22:20:29,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684602558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:29,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450984552] [2024-11-09 22:20:29,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:20:29,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:29,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:29,617 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) [2024-11-09 22:20:29,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 22:20:29,668 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 22:20:29,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:29,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 22:20:29,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 22:20:29,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 22:20:29,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450984552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:29,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:29,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 25 [2024-11-09 22:20:29,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463256419] [2024-11-09 22:20:29,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:29,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 22:20:29,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:29,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 22:20:29,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2024-11-09 22:20:29,935 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:30,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:30,354 INFO L93 Difference]: Finished difference Result 163 states and 184 transitions. [2024-11-09 22:20:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 22:20:30,355 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 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 [2024-11-09 22:20:30,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:30,356 INFO L225 Difference]: With dead ends: 163 [2024-11-09 22:20:30,358 INFO L226 Difference]: Without dead ends: 140 [2024-11-09 22:20:30,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 22:20:30,359 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 48 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:30,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 486 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:20:30,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-09 22:20:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2024-11-09 22:20:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.110236220472441) internal successors, (141), 127 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2024-11-09 22:20:30,383 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 39 [2024-11-09 22:20:30,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:30,384 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2024-11-09 22:20:30,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2024-11-09 22:20:30,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 22:20:30,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:30,385 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:30,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:30,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:30,586 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:30,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:30,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1261842453, now seen corresponding path program 13 times [2024-11-09 22:20:30,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:30,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414769523] [2024-11-09 22:20:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:30,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 20 proven. 40 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 22:20:30,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414769523] [2024-11-09 22:20:30,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414769523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582413190] [2024-11-09 22:20:30,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:20:30,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:30,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:30,741 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) [2024-11-09 22:20:30,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 22:20:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:30,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 22:20:30,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 22:20:30,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:31,130 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 22:20:31,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582413190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:31,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:31,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 26 [2024-11-09 22:20:31,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524323109] [2024-11-09 22:20:31,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:31,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 22:20:31,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:31,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 22:20:31,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2024-11-09 22:20:31,132 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 26 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) [2024-11-09 22:20:32,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:32,691 INFO L93 Difference]: Finished difference Result 259 states and 292 transitions. [2024-11-09 22:20:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-09 22:20:32,691 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 26 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 41 [2024-11-09 22:20:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:32,692 INFO L225 Difference]: With dead ends: 259 [2024-11-09 22:20:32,692 INFO L226 Difference]: Without dead ends: 211 [2024-11-09 22:20:32,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=732, Invalid=4818, Unknown=0, NotChecked=0, Total=5550 [2024-11-09 22:20:32,695 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 297 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:32,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 443 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:20:32,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-09 22:20:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 147. [2024-11-09 22:20:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.1164383561643836) internal successors, (163), 146 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 163 transitions. [2024-11-09 22:20:32,732 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 163 transitions. Word has length 41 [2024-11-09 22:20:32,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:32,732 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 163 transitions. [2024-11-09 22:20:32,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 26 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) [2024-11-09 22:20:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 163 transitions. [2024-11-09 22:20:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 22:20:32,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:32,734 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:32,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:32,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:32,937 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:32,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:32,938 INFO L85 PathProgramCache]: Analyzing trace with hash 330480460, now seen corresponding path program 14 times [2024-11-09 22:20:32,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:32,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234568248] [2024-11-09 22:20:32,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:32,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:20:33,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:33,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234568248] [2024-11-09 22:20:33,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234568248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:33,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012210733] [2024-11-09 22:20:33,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:20:33,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:33,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:33,156 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) [2024-11-09 22:20:33,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 22:20:33,200 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:20:33,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:33,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 22:20:33,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:33,275 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:20:33,276 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:20:33,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012210733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:33,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:33,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-11-09 22:20:33,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223814393] [2024-11-09 22:20:33,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:33,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 22:20:33,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 22:20:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:20:33,399 INFO L87 Difference]: Start difference. First operand 147 states and 163 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) [2024-11-09 22:20:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:33,489 INFO L93 Difference]: Finished difference Result 182 states and 201 transitions. [2024-11-09 22:20:33,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 22:20:33,490 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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 43 [2024-11-09 22:20:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:33,491 INFO L225 Difference]: With dead ends: 182 [2024-11-09 22:20:33,491 INFO L226 Difference]: Without dead ends: 165 [2024-11-09 22:20:33,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 77 SyntacticMatches, 13 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:20:33,492 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:33,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 197 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:20:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-09 22:20:33,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2024-11-09 22:20:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.1153846153846154) internal successors, (174), 156 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:33,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 174 transitions. [2024-11-09 22:20:33,521 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 174 transitions. Word has length 43 [2024-11-09 22:20:33,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:33,522 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 174 transitions. [2024-11-09 22:20:33,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) [2024-11-09 22:20:33,522 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 174 transitions. [2024-11-09 22:20:33,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 22:20:33,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:33,522 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:33,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:33,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:33,723 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:33,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:33,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1499586002, now seen corresponding path program 15 times [2024-11-09 22:20:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:33,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730189555] [2024-11-09 22:20:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:33,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:20:33,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:33,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730189555] [2024-11-09 22:20:33,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730189555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:33,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796642619] [2024-11-09 22:20:33,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:20:33,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:33,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:33,946 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) [2024-11-09 22:20:33,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 22:20:33,992 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 22:20:33,992 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:33,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 22:20:33,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:20:34,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:20:34,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796642619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:34,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:34,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 10] total 28 [2024-11-09 22:20:34,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8262631] [2024-11-09 22:20:34,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:34,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 22:20:34,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:34,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 22:20:34,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:20:34,365 INFO L87 Difference]: Start difference. First operand 157 states and 174 transitions. Second operand has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 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) [2024-11-09 22:20:35,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:35,310 INFO L93 Difference]: Finished difference Result 241 states and 272 transitions. [2024-11-09 22:20:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-09 22:20:35,311 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 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 43 [2024-11-09 22:20:35,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:35,312 INFO L225 Difference]: With dead ends: 241 [2024-11-09 22:20:35,312 INFO L226 Difference]: Without dead ends: 224 [2024-11-09 22:20:35,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=732, Invalid=3174, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 22:20:35,313 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 153 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:35,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 727 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:20:35,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-09 22:20:35,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 169. [2024-11-09 22:20:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.1071428571428572) internal successors, (186), 168 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 186 transitions. [2024-11-09 22:20:35,354 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 186 transitions. Word has length 43 [2024-11-09 22:20:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:35,354 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 186 transitions. [2024-11-09 22:20:35,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 28 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) [2024-11-09 22:20:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 186 transitions. [2024-11-09 22:20:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 22:20:35,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:35,355 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:35,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 22:20:35,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:35,556 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:35,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:35,557 INFO L85 PathProgramCache]: Analyzing trace with hash -328313782, now seen corresponding path program 16 times [2024-11-09 22:20:35,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:35,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367718455] [2024-11-09 22:20:35,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:35,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 24 proven. 60 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 22:20:35,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367718455] [2024-11-09 22:20:35,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367718455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693895331] [2024-11-09 22:20:35,745 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:20:35,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:35,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:35,746 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) [2024-11-09 22:20:35,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 22:20:35,794 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:20:35,794 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:35,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 22:20:35,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:20:35,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:20:36,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693895331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:36,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:36,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 30 [2024-11-09 22:20:36,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974433269] [2024-11-09 22:20:36,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:36,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 22:20:36,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:36,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 22:20:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2024-11-09 22:20:36,258 INFO L87 Difference]: Start difference. First operand 169 states and 186 transitions. Second operand has 30 states, 30 states have (on average 2.4) internal successors, (72), 30 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:39,046 INFO L93 Difference]: Finished difference Result 352 states and 390 transitions. [2024-11-09 22:20:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-09 22:20:39,047 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 30 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-09 22:20:39,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:39,048 INFO L225 Difference]: With dead ends: 352 [2024-11-09 22:20:39,048 INFO L226 Difference]: Without dead ends: 292 [2024-11-09 22:20:39,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2546 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1260, Invalid=8442, Unknown=0, NotChecked=0, Total=9702 [2024-11-09 22:20:39,051 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 477 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:39,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 630 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 22:20:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-09 22:20:39,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 188. [2024-11-09 22:20:39,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.1176470588235294) internal successors, (209), 187 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 209 transitions. [2024-11-09 22:20:39,087 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 209 transitions. Word has length 47 [2024-11-09 22:20:39,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:39,087 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 209 transitions. [2024-11-09 22:20:39,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 30 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:39,087 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 209 transitions. [2024-11-09 22:20:39,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 22:20:39,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:39,088 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:39,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:39,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:39,288 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:39,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1434014443, now seen corresponding path program 17 times [2024-11-09 22:20:39,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:39,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193653116] [2024-11-09 22:20:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:39,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 22:20:39,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:39,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193653116] [2024-11-09 22:20:39,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193653116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:39,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804595607] [2024-11-09 22:20:39,525 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:20:39,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:39,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:39,527 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) [2024-11-09 22:20:39,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 22:20:39,610 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-09 22:20:39,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:39,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 22:20:39,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 22:20:39,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 22:20:39,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804595607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:39,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:39,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 11 [2024-11-09 22:20:39,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250669730] [2024-11-09 22:20:39,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:39,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 22:20:39,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:39,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 22:20:39,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:20:39,825 INFO L87 Difference]: Start difference. First operand 188 states and 209 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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) [2024-11-09 22:20:39,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:39,978 INFO L93 Difference]: Finished difference Result 233 states and 257 transitions. [2024-11-09 22:20:39,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 22:20:39,979 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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 49 [2024-11-09 22:20:39,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:39,980 INFO L225 Difference]: With dead ends: 233 [2024-11-09 22:20:39,980 INFO L226 Difference]: Without dead ends: 214 [2024-11-09 22:20:39,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 89 SyntacticMatches, 14 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:20:39,981 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 247 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 [2024-11-09 22:20:39,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 247 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:20:39,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-09 22:20:40,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 200. [2024-11-09 22:20:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.1155778894472361) internal successors, (222), 199 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:40,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2024-11-09 22:20:40,039 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 49 [2024-11-09 22:20:40,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:40,039 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2024-11-09 22:20:40,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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) [2024-11-09 22:20:40,039 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2024-11-09 22:20:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 22:20:40,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:40,040 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:40,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:40,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:40,244 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:40,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:40,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1417759281, now seen corresponding path program 18 times [2024-11-09 22:20:40,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:40,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033882007] [2024-11-09 22:20:40,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:40,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:20:40,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:40,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033882007] [2024-11-09 22:20:40,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033882007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:40,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040417584] [2024-11-09 22:20:40,481 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:20:40,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:40,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:40,484 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) [2024-11-09 22:20:40,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 22:20:40,563 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-09 22:20:40,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:40,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 22:20:40,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:20:40,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 22:20:40,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040417584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:40,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:40,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 12] total 32 [2024-11-09 22:20:40,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462627697] [2024-11-09 22:20:40,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:40,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 22:20:40,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:40,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 22:20:40,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2024-11-09 22:20:40,939 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 32 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:41,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:41,744 INFO L93 Difference]: Finished difference Result 253 states and 283 transitions. [2024-11-09 22:20:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-09 22:20:41,745 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 32 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-09 22:20:41,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:41,746 INFO L225 Difference]: With dead ends: 253 [2024-11-09 22:20:41,746 INFO L226 Difference]: Without dead ends: 226 [2024-11-09 22:20:41,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=405, Invalid=2787, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 22:20:41,747 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 79 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:41,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 763 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:20:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-09 22:20:41,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 208. [2024-11-09 22:20:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0966183574879227) internal successors, (227), 207 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 227 transitions. [2024-11-09 22:20:41,794 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 227 transitions. Word has length 49 [2024-11-09 22:20:41,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:41,794 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 227 transitions. [2024-11-09 22:20:41,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 32 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:41,794 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 227 transitions. [2024-11-09 22:20:41,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 22:20:41,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:41,795 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:41,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:41,995 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,SelfDestructingSolverStorable23 [2024-11-09 22:20:41,995 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:41,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:41,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1231407854, now seen corresponding path program 19 times [2024-11-09 22:20:41,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:41,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194555581] [2024-11-09 22:20:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:41,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 22:20:42,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194555581] [2024-11-09 22:20:42,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194555581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708645353] [2024-11-09 22:20:42,252 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:20:42,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:42,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:42,253 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) [2024-11-09 22:20:42,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 22:20:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:42,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 22:20:42,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:20:42,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 22:20:42,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708645353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:42,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:42,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 12] total 34 [2024-11-09 22:20:42,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596767603] [2024-11-09 22:20:42,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:42,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 22:20:42,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 22:20:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 22:20:42,682 INFO L87 Difference]: Start difference. First operand 208 states and 227 transitions. Second operand has 34 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:43,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:43,503 INFO L93 Difference]: Finished difference Result 391 states and 435 transitions. [2024-11-09 22:20:43,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-09 22:20:43,504 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-09 22:20:43,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:43,506 INFO L225 Difference]: With dead ends: 391 [2024-11-09 22:20:43,506 INFO L226 Difference]: Without dead ends: 372 [2024-11-09 22:20:43,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=850, Invalid=2572, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 22:20:43,507 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 311 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:43,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 744 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:20:43,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-09 22:20:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 210. [2024-11-09 22:20:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.0909090909090908) internal successors, (228), 209 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 228 transitions. [2024-11-09 22:20:43,568 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 228 transitions. Word has length 51 [2024-11-09 22:20:43,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:43,568 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 228 transitions. [2024-11-09 22:20:43,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.764705882352941) internal successors, (94), 34 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:43,568 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 228 transitions. [2024-11-09 22:20:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 22:20:43,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:43,569 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:43,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 22:20:43,770 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,SelfDestructingSolverStorable24 [2024-11-09 22:20:43,770 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:43,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1470897047, now seen corresponding path program 20 times [2024-11-09 22:20:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:43,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709835357] [2024-11-09 22:20:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:43,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:43,990 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 28 proven. 84 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 22:20:43,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:43,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709835357] [2024-11-09 22:20:43,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709835357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:43,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128667078] [2024-11-09 22:20:43,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:20:43,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:43,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:43,993 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) [2024-11-09 22:20:43,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 22:20:44,047 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:20:44,047 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:44,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 22:20:44,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 22:20:44,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 22:20:44,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128667078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:44,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:44,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 34 [2024-11-09 22:20:44,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320040154] [2024-11-09 22:20:44,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:44,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 22:20:44,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:44,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 22:20:44,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 22:20:44,557 INFO L87 Difference]: Start difference. First operand 210 states and 228 transitions. Second operand has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 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) [2024-11-09 22:20:49,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:49,312 INFO L93 Difference]: Finished difference Result 441 states and 482 transitions. [2024-11-09 22:20:49,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-09 22:20:49,313 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 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) Word has length 53 [2024-11-09 22:20:49,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:49,314 INFO L225 Difference]: With dead ends: 441 [2024-11-09 22:20:49,314 INFO L226 Difference]: Without dead ends: 371 [2024-11-09 22:20:49,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4584 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2042, Invalid=13708, Unknown=0, NotChecked=0, Total=15750 [2024-11-09 22:20:49,318 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 665 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:49,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 620 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 22:20:49,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-09 22:20:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 235. [2024-11-09 22:20:49,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.1025641025641026) internal successors, (258), 234 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:49,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 258 transitions. [2024-11-09 22:20:49,372 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 258 transitions. Word has length 53 [2024-11-09 22:20:49,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:49,372 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 258 transitions. [2024-11-09 22:20:49,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 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) [2024-11-09 22:20:49,373 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 258 transitions. [2024-11-09 22:20:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 22:20:49,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:49,373 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:49,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:49,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 22:20:49,577 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:49,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:49,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1325562294, now seen corresponding path program 21 times [2024-11-09 22:20:49,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:49,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425365946] [2024-11-09 22:20:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:49,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 22:20:49,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:49,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425365946] [2024-11-09 22:20:49,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425365946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:49,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488149294] [2024-11-09 22:20:49,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:20:49,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:49,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:49,833 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) [2024-11-09 22:20:49,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 22:20:49,932 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-09 22:20:49,933 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:49,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 22:20:49,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 22:20:49,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 22:20:50,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488149294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:50,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:50,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-11-09 22:20:50,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139436407] [2024-11-09 22:20:50,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:50,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 22:20:50,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:50,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 22:20:50,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:20:50,131 INFO L87 Difference]: Start difference. First operand 235 states and 258 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:50,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:50,278 INFO L93 Difference]: Finished difference Result 286 states and 312 transitions. [2024-11-09 22:20:50,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 22:20:50,279 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-09 22:20:50,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:50,279 INFO L225 Difference]: With dead ends: 286 [2024-11-09 22:20:50,280 INFO L226 Difference]: Without dead ends: 265 [2024-11-09 22:20:50,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 17 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:20:50,280 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:50,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 264 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:20:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-09 22:20:50,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 249. [2024-11-09 22:20:50,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.1008064516129032) internal successors, (273), 248 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 273 transitions. [2024-11-09 22:20:50,336 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 273 transitions. Word has length 55 [2024-11-09 22:20:50,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:50,336 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 273 transitions. [2024-11-09 22:20:50,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:50,337 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 273 transitions. [2024-11-09 22:20:50,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 22:20:50,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:50,338 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:50,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:50,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:50,541 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:50,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:50,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1283747727, now seen corresponding path program 22 times [2024-11-09 22:20:50,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:50,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071726775] [2024-11-09 22:20:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:50,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 22:20:50,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:50,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071726775] [2024-11-09 22:20:50,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071726775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:50,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258236606] [2024-11-09 22:20:50,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:20:50,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:50,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:50,835 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) [2024-11-09 22:20:50,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 22:20:50,892 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:20:50,892 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:50,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 22:20:50,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 22:20:51,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 22:20:51,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258236606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:51,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:51,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 14] total 38 [2024-11-09 22:20:51,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25857759] [2024-11-09 22:20:51,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:51,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 22:20:51,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:51,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 22:20:51,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1221, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 22:20:51,410 INFO L87 Difference]: Start difference. First operand 249 states and 273 transitions. Second operand has 38 states, 38 states have (on average 2.3157894736842106) internal successors, (88), 38 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) [2024-11-09 22:20:53,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:53,009 INFO L93 Difference]: Finished difference Result 336 states and 371 transitions. [2024-11-09 22:20:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-09 22:20:53,010 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.3157894736842106) internal successors, (88), 38 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-09 22:20:53,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:53,011 INFO L225 Difference]: With dead ends: 336 [2024-11-09 22:20:53,011 INFO L226 Difference]: Without dead ends: 283 [2024-11-09 22:20:53,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=645, Invalid=5207, Unknown=0, NotChecked=0, Total=5852 [2024-11-09 22:20:53,012 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 114 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:53,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1388 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 22:20:53,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-09 22:20:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2024-11-09 22:20:53,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.0846153846153845) internal successors, (282), 260 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 282 transitions. [2024-11-09 22:20:53,102 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 282 transitions. Word has length 57 [2024-11-09 22:20:53,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:53,102 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 282 transitions. [2024-11-09 22:20:53,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.3157894736842106) internal successors, (88), 38 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) [2024-11-09 22:20:53,102 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 282 transitions. [2024-11-09 22:20:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 22:20:53,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:53,103 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:53,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-09 22:20:53,303 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,SelfDestructingSolverStorable27 [2024-11-09 22:20:53,303 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:53,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:53,304 INFO L85 PathProgramCache]: Analyzing trace with hash -783601592, now seen corresponding path program 23 times [2024-11-09 22:20:53,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:53,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103061135] [2024-11-09 22:20:53,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:53,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:53,548 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 32 proven. 112 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 22:20:53,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:53,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103061135] [2024-11-09 22:20:53,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103061135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:53,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149485525] [2024-11-09 22:20:53,549 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:20:53,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:53,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:53,551 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) [2024-11-09 22:20:53,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 22:20:53,747 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-09 22:20:53,748 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:53,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 22:20:53,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 32 proven. 112 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 22:20:53,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 32 proven. 112 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 22:20:54,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149485525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:54,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:54,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 42 [2024-11-09 22:20:54,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39355358] [2024-11-09 22:20:54,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:54,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-09 22:20:54,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:54,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-09 22:20:54,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 22:20:54,366 INFO L87 Difference]: Start difference. First operand 261 states and 282 transitions. Second operand has 42 states, 42 states have (on average 2.4285714285714284) internal successors, (102), 42 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:55,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:55,720 INFO L93 Difference]: Finished difference Result 502 states and 545 transitions. [2024-11-09 22:20:55,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-09 22:20:55,720 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.4285714285714284) internal successors, (102), 42 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-09 22:20:55,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:55,722 INFO L225 Difference]: With dead ends: 502 [2024-11-09 22:20:55,722 INFO L226 Difference]: Without dead ends: 460 [2024-11-09 22:20:55,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=975, Invalid=3855, Unknown=0, NotChecked=0, Total=4830 [2024-11-09 22:20:55,723 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 186 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:55,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 546 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:20:55,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-09 22:20:55,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 265. [2024-11-09 22:20:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.0871212121212122) internal successors, (287), 264 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 287 transitions. [2024-11-09 22:20:55,801 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 287 transitions. Word has length 59 [2024-11-09 22:20:55,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:55,801 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 287 transitions. [2024-11-09 22:20:55,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.4285714285714284) internal successors, (102), 42 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:55,801 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 287 transitions. [2024-11-09 22:20:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 22:20:55,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:55,802 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:55,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:56,002 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,SelfDestructingSolverStorable28 [2024-11-09 22:20:56,002 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:56,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:56,003 INFO L85 PathProgramCache]: Analyzing trace with hash -513538711, now seen corresponding path program 24 times [2024-11-09 22:20:56,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:56,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334325861] [2024-11-09 22:20:56,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:56,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:20:56,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334325861] [2024-11-09 22:20:56,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334325861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535500385] [2024-11-09 22:20:56,309 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:20:56,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:56,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:56,311 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) [2024-11-09 22:20:56,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 22:20:56,413 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-09 22:20:56,413 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:20:56,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 22:20:56,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:20:56,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:20:56,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535500385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:56,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:56,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 13 [2024-11-09 22:20:56,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402599525] [2024-11-09 22:20:56,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:56,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 22:20:56,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:56,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 22:20:56,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:20:56,627 INFO L87 Difference]: Start difference. First operand 265 states and 287 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 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) [2024-11-09 22:20:56,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:20:56,831 INFO L93 Difference]: Finished difference Result 403 states and 438 transitions. [2024-11-09 22:20:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 22:20:56,831 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 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 61 [2024-11-09 22:20:56,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:20:56,832 INFO L225 Difference]: With dead ends: 403 [2024-11-09 22:20:56,833 INFO L226 Difference]: Without dead ends: 380 [2024-11-09 22:20:56,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 111 SyntacticMatches, 18 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:20:56,833 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:20:56,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 355 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:20:56,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-09 22:20:56,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 301. [2024-11-09 22:20:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.1) internal successors, (330), 300 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:20:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 330 transitions. [2024-11-09 22:20:56,919 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 330 transitions. Word has length 61 [2024-11-09 22:20:56,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:20:56,919 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 330 transitions. [2024-11-09 22:20:56,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 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) [2024-11-09 22:20:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 330 transitions. [2024-11-09 22:20:56,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 22:20:56,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:20:56,921 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:20:56,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 22:20:57,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:57,121 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:20:57,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:20:57,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1539892088, now seen corresponding path program 25 times [2024-11-09 22:20:57,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:20:57,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952077304] [2024-11-09 22:20:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:20:57,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:20:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 18 proven. 144 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:20:57,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:20:57,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952077304] [2024-11-09 22:20:57,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952077304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:20:57,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54830984] [2024-11-09 22:20:57,397 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:20:57,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:20:57,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:20:57,398 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) [2024-11-09 22:20:57,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 22:20:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:20:57,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 22:20:57,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:20:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:20:57,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:20:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:20:57,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54830984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:20:57,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:20:57,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 40 [2024-11-09 22:20:57,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497815162] [2024-11-09 22:20:57,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:20:57,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 22:20:57,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:20:57,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 22:20:57,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 22:20:57,986 INFO L87 Difference]: Start difference. First operand 301 states and 330 transitions. Second operand has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:09,711 INFO L93 Difference]: Finished difference Result 611 states and 679 transitions. [2024-11-09 22:21:09,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2024-11-09 22:21:09,711 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-09 22:21:09,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:09,712 INFO L225 Difference]: With dead ends: 611 [2024-11-09 22:21:09,721 INFO L226 Difference]: Without dead ends: 499 [2024-11-09 22:21:09,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9887 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=4521, Invalid=25235, Unknown=0, NotChecked=0, Total=29756 [2024-11-09 22:21:09,723 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 1227 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:09,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 644 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 22:21:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-09 22:21:09,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 318. [2024-11-09 22:21:09,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.0946372239747635) internal successors, (347), 317 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:09,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 347 transitions. [2024-11-09 22:21:09,808 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 347 transitions. Word has length 63 [2024-11-09 22:21:09,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:09,809 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 347 transitions. [2024-11-09 22:21:09,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:09,809 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 347 transitions. [2024-11-09 22:21:09,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 22:21:09,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:09,810 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:09,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-09 22:21:10,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:10,010 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:10,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:10,011 INFO L85 PathProgramCache]: Analyzing trace with hash -842758731, now seen corresponding path program 26 times [2024-11-09 22:21:10,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:10,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511750414] [2024-11-09 22:21:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:10,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:21:10,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:10,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511750414] [2024-11-09 22:21:10,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511750414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:10,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622212022] [2024-11-09 22:21:10,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:21:10,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:10,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:10,424 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) [2024-11-09 22:21:10,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 22:21:10,486 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:21:10,487 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:10,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 22:21:10,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:21:10,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-09 22:21:11,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622212022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:11,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:11,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 14] total 43 [2024-11-09 22:21:11,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508120508] [2024-11-09 22:21:11,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:11,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 22:21:11,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:11,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 22:21:11,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1441, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 22:21:11,052 INFO L87 Difference]: Start difference. First operand 318 states and 347 transitions. Second operand has 43 states, 43 states have (on average 2.6511627906976742) internal successors, (114), 43 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:12,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:12,351 INFO L93 Difference]: Finished difference Result 618 states and 680 transitions. [2024-11-09 22:21:12,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-09 22:21:12,351 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.6511627906976742) internal successors, (114), 43 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-09 22:21:12,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:12,353 INFO L225 Difference]: With dead ends: 618 [2024-11-09 22:21:12,353 INFO L226 Difference]: Without dead ends: 595 [2024-11-09 22:21:12,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1528, Invalid=4792, Unknown=0, NotChecked=0, Total=6320 [2024-11-09 22:21:12,354 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 463 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:12,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1361 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 22:21:12,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2024-11-09 22:21:12,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 345. [2024-11-09 22:21:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.0843023255813953) internal successors, (373), 344 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 373 transitions. [2024-11-09 22:21:12,471 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 373 transitions. Word has length 65 [2024-11-09 22:21:12,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:12,471 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 373 transitions. [2024-11-09 22:21:12,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.6511627906976742) internal successors, (114), 43 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:12,471 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 373 transitions. [2024-11-09 22:21:12,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 22:21:12,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:12,472 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:12,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-09 22:21:12,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:12,673 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:12,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:12,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1051885496, now seen corresponding path program 27 times [2024-11-09 22:21:12,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:12,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931807908] [2024-11-09 22:21:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:12,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 22:21:13,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931807908] [2024-11-09 22:21:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931807908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159003355] [2024-11-09 22:21:13,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:21:13,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:13,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:13,016 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) [2024-11-09 22:21:13,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 22:21:13,179 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-09 22:21:13,179 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:13,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 22:21:13,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 22:21:13,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 22:21:13,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159003355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:13,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:13,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2024-11-09 22:21:13,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083244951] [2024-11-09 22:21:13,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:13,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 22:21:13,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:13,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 22:21:13,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-09 22:21:13,437 INFO L87 Difference]: Start difference. First operand 345 states and 373 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:13,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:13,659 INFO L93 Difference]: Finished difference Result 415 states and 448 transitions. [2024-11-09 22:21:13,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 22:21:13,660 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-09 22:21:13,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:13,661 INFO L225 Difference]: With dead ends: 415 [2024-11-09 22:21:13,661 INFO L226 Difference]: Without dead ends: 390 [2024-11-09 22:21:13,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 122 SyntacticMatches, 20 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-09 22:21:13,662 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:13,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 386 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:21:13,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-09 22:21:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 363. [2024-11-09 22:21:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.0856353591160222) internal successors, (393), 362 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 393 transitions. [2024-11-09 22:21:13,815 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 393 transitions. Word has length 67 [2024-11-09 22:21:13,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:13,816 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 393 transitions. [2024-11-09 22:21:13,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 393 transitions. [2024-11-09 22:21:13,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 22:21:13,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:13,818 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:13,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-09 22:21:14,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:14,021 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:14,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:14,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1527231577, now seen corresponding path program 28 times [2024-11-09 22:21:14,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:14,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073886151] [2024-11-09 22:21:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:14,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 20 proven. 180 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 22:21:14,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:14,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073886151] [2024-11-09 22:21:14,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073886151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:14,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901879965] [2024-11-09 22:21:14,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:21:14,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:14,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:14,332 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) [2024-11-09 22:21:14,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 22:21:14,386 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:21:14,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:14,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 22:21:14,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 22:21:14,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 22:21:15,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901879965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:15,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:15,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 44 [2024-11-09 22:21:15,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938839140] [2024-11-09 22:21:15,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:15,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 22:21:15,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:15,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 22:21:15,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1605, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 22:21:15,011 INFO L87 Difference]: Start difference. First operand 363 states and 393 transitions. Second operand has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:34,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:34,611 INFO L93 Difference]: Finished difference Result 780 states and 846 transitions. [2024-11-09 22:21:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2024-11-09 22:21:34,612 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-09 22:21:34,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:34,614 INFO L225 Difference]: With dead ends: 780 [2024-11-09 22:21:34,614 INFO L226 Difference]: Without dead ends: 672 [2024-11-09 22:21:34,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14933 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=6503, Invalid=36139, Unknown=0, NotChecked=0, Total=42642 [2024-11-09 22:21:34,617 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 1689 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:34,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 697 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 22:21:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-11-09 22:21:34,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 392. [2024-11-09 22:21:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.092071611253197) internal successors, (427), 391 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 427 transitions. [2024-11-09 22:21:34,752 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 427 transitions. Word has length 69 [2024-11-09 22:21:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:34,752 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 427 transitions. [2024-11-09 22:21:34,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:34,752 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 427 transitions. [2024-11-09 22:21:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 22:21:34,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:34,753 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:34,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 22:21:34,954 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,SelfDestructingSolverStorable33 [2024-11-09 22:21:34,954 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:34,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1574348519, now seen corresponding path program 29 times [2024-11-09 22:21:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:34,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292060782] [2024-11-09 22:21:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:34,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 22:21:35,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:35,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292060782] [2024-11-09 22:21:35,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292060782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:35,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692028723] [2024-11-09 22:21:35,308 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:21:35,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:35,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:35,310 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) [2024-11-09 22:21:35,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-09 22:21:35,479 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-09 22:21:35,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:35,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 22:21:35,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 22:21:35,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 22:21:35,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692028723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:35,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:35,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-11-09 22:21:35,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636245417] [2024-11-09 22:21:35,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:35,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 22:21:35,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:35,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 22:21:35,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:21:35,773 INFO L87 Difference]: Start difference. First operand 392 states and 427 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:36,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:36,061 INFO L93 Difference]: Finished difference Result 467 states and 508 transitions. [2024-11-09 22:21:36,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 22:21:36,061 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-09 22:21:36,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:36,063 INFO L225 Difference]: With dead ends: 467 [2024-11-09 22:21:36,063 INFO L226 Difference]: Without dead ends: 440 [2024-11-09 22:21:36,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 133 SyntacticMatches, 22 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:21:36,063 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:36,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 468 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:21:36,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-09 22:21:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 414. [2024-11-09 22:21:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.0944309927360776) internal successors, (452), 413 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:36,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 452 transitions. [2024-11-09 22:21:36,216 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 452 transitions. Word has length 73 [2024-11-09 22:21:36,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:36,216 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 452 transitions. [2024-11-09 22:21:36,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 452 transitions. [2024-11-09 22:21:36,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 22:21:36,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:36,226 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 9, 8, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:36,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-09 22:21:36,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:36,427 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:36,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:36,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2061355507, now seen corresponding path program 30 times [2024-11-09 22:21:36,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:36,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514892963] [2024-11-09 22:21:36,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:36,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 314 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:21:36,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:36,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514892963] [2024-11-09 22:21:36,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514892963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:36,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754530060] [2024-11-09 22:21:36,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:21:36,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:36,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:36,826 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) [2024-11-09 22:21:36,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-09 22:21:36,934 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-09 22:21:36,934 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:36,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-09 22:21:36,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 314 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:21:37,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 28 proven. 84 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-09 22:21:37,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754530060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:37,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:37,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 16] total 47 [2024-11-09 22:21:37,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011228035] [2024-11-09 22:21:37,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:37,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-09 22:21:37,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:37,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-09 22:21:37,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1926, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 22:21:37,610 INFO L87 Difference]: Start difference. First operand 414 states and 452 transitions. Second operand has 47 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 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) [2024-11-09 22:21:41,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:41,561 INFO L93 Difference]: Finished difference Result 539 states and 595 transitions. [2024-11-09 22:21:41,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-09 22:21:41,562 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 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) Word has length 73 [2024-11-09 22:21:41,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:41,564 INFO L225 Difference]: With dead ends: 539 [2024-11-09 22:21:41,564 INFO L226 Difference]: Without dead ends: 456 [2024-11-09 22:21:41,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3156 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1183, Invalid=12389, Unknown=0, NotChecked=0, Total=13572 [2024-11-09 22:21:41,566 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 191 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 2252 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 2316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:41,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 2406 Invalid, 2316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2252 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 22:21:41,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-09 22:21:41,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 424. [2024-11-09 22:21:41,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 1.08274231678487) internal successors, (458), 423 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:41,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 458 transitions. [2024-11-09 22:21:41,765 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 458 transitions. Word has length 73 [2024-11-09 22:21:41,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:41,765 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 458 transitions. [2024-11-09 22:21:41,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 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) [2024-11-09 22:21:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 458 transitions. [2024-11-09 22:21:41,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 22:21:41,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:41,767 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:41,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-09 22:21:41,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:41,968 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:41,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:41,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1356932597, now seen corresponding path program 31 times [2024-11-09 22:21:41,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:41,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559387861] [2024-11-09 22:21:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:41,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 362 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 22:21:42,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:42,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559387861] [2024-11-09 22:21:42,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559387861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:42,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555129568] [2024-11-09 22:21:42,458 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:21:42,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:42,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:42,460 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) [2024-11-09 22:21:42,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 22:21:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:42,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-09 22:21:42,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:21:42,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-11-09 22:21:43,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555129568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:43,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:43,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 16] total 49 [2024-11-09 22:21:43,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057067851] [2024-11-09 22:21:43,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:43,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 22:21:43,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:43,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 22:21:43,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=1886, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 22:21:43,225 INFO L87 Difference]: Start difference. First operand 424 states and 458 transitions. Second operand has 49 states, 49 states have (on average 2.6122448979591835) internal successors, (128), 49 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:21:45,327 INFO L93 Difference]: Finished difference Result 784 states and 859 transitions. [2024-11-09 22:21:45,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-09 22:21:45,327 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.6122448979591835) internal successors, (128), 49 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-09 22:21:45,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:21:45,330 INFO L225 Difference]: With dead ends: 784 [2024-11-09 22:21:45,330 INFO L226 Difference]: Without dead ends: 761 [2024-11-09 22:21:45,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2360, Invalid=7342, Unknown=0, NotChecked=0, Total=9702 [2024-11-09 22:21:45,331 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 554 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:21:45,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1971 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 22:21:45,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2024-11-09 22:21:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 422. [2024-11-09 22:21:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.0760095011876485) internal successors, (453), 421 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 453 transitions. [2024-11-09 22:21:45,495 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 453 transitions. Word has length 73 [2024-11-09 22:21:45,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:21:45,495 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 453 transitions. [2024-11-09 22:21:45,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.6122448979591835) internal successors, (128), 49 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:21:45,495 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 453 transitions. [2024-11-09 22:21:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 22:21:45,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:21:45,497 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:21:45,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-09 22:21:45,697 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,SelfDestructingSolverStorable36 [2024-11-09 22:21:45,697 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:21:45,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:21:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1843317114, now seen corresponding path program 32 times [2024-11-09 22:21:45,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:21:45,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99133314] [2024-11-09 22:21:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:21:45,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:21:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:21:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 22 proven. 220 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 22:21:46,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:21:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99133314] [2024-11-09 22:21:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99133314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:21:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340771461] [2024-11-09 22:21:46,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:21:46,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:21:46,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:21:46,098 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) [2024-11-09 22:21:46,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-09 22:21:46,159 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:21:46,159 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:21:46,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 22:21:46,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:21:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 22:21:46,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:21:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 22:21:46,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340771461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:21:46,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:21:46,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 48 [2024-11-09 22:21:46,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665636497] [2024-11-09 22:21:46,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:21:46,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-09 22:21:46,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:21:46,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-09 22:21:46,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=1919, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 22:21:46,925 INFO L87 Difference]: Start difference. First operand 422 states and 453 transitions. Second operand has 48 states, 48 states have (on average 2.2291666666666665) internal successors, (107), 48 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)