./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de32.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de32.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be02771c62bfe2ce14e3e1aa527948281d29318788bbe261fd0d537b1dc5e291 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:35:53,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:35:53,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:35:53,330 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:35:53,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:35:53,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:35:53,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:35:53,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:35:53,353 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:35:53,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:35:53,354 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:35:53,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:35:53,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:35:53,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:35:53,355 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:35:53,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:35:53,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:35:53,356 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:35:53,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:35:53,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:35:53,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:35:53,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:35:53,362 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:35:53,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:35:53,362 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:35:53,362 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:35:53,363 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:35:53,363 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:35:53,363 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:35:53,364 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:35:53,364 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:35:53,364 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:35:53,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:35:53,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:35:53,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:35:53,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:35:53,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:35:53,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:35:53,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:35:53,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:35:53,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:35:53,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:35:53,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be02771c62bfe2ce14e3e1aa527948281d29318788bbe261fd0d537b1dc5e291 [2024-10-12 18:35:53,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:35:53,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:35:53,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:35:53,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:35:53,687 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:35:53,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de32.c [2024-10-12 18:35:55,079 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:35:55,282 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:35:55,283 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de32.c [2024-10-12 18:35:55,289 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/078ea5915/4369698da5574d9881337369cb44660a/FLAGa49e6a891 [2024-10-12 18:35:55,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/078ea5915/4369698da5574d9881337369cb44660a [2024-10-12 18:35:55,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:35:55,315 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:35:55,316 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:35:55,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:35:55,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:35:55,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7539d1d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55, skipping insertion in model container [2024-10-12 18:35:55,325 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,349 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:35:55,526 WARN L248 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] [2024-10-12 18:35:55,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:35:55,554 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:35:55,563 WARN L248 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] [2024-10-12 18:35:55,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:35:55,580 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:35:55,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55 WrapperNode [2024-10-12 18:35:55,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:35:55,582 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:35:55,582 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:35:55,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:35:55,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,611 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-10-12 18:35:55,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:35:55,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:35:55,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:35:55,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:35:55,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,623 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,632 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]. [2024-10-12 18:35:55,632 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,632 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,638 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:35:55,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:35:55,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:35:55,642 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:35:55,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (1/1) ... [2024-10-12 18:35:55,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:35:55,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:55,678 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) [2024-10-12 18:35:55,682 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 [2024-10-12 18:35:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:35:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:35:55,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:35:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:35:55,794 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:35:55,798 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:35:55,963 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-10-12 18:35:55,963 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:35:55,994 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:35:55,994 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-12 18:35:55,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:35:55 BoogieIcfgContainer [2024-10-12 18:35:55,995 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:35:55,998 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:35:55,998 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:35:56,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:35:56,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:35:55" (1/3) ... [2024-10-12 18:35:56,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533810f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:35:56, skipping insertion in model container [2024-10-12 18:35:56,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:55" (2/3) ... [2024-10-12 18:35:56,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533810f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:35:56, skipping insertion in model container [2024-10-12 18:35:56,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:35:55" (3/3) ... [2024-10-12 18:35:56,005 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de32.c [2024-10-12 18:35:56,050 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:35:56,055 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:35:56,162 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:35:56,170 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;@7d78de1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:35:56,172 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:35:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:56,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-12 18:35:56,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:56,185 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:56,186 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:56,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:56,191 INFO L85 PathProgramCache]: Analyzing trace with hash -593791358, now seen corresponding path program 1 times [2024-10-12 18:35:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:56,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965945051] [2024-10-12 18:35:56,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:56,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:56,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:56,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965945051] [2024-10-12 18:35:56,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965945051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:35:56,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:35:56,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 18:35:56,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173795790] [2024-10-12 18:35:56,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:35:56,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:35:56,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:35:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:35:56,563 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:56,611 INFO L93 Difference]: Finished difference Result 24 states and 39 transitions. [2024-10-12 18:35:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:35:56,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-12 18:35:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:56,619 INFO L225 Difference]: With dead ends: 24 [2024-10-12 18:35:56,619 INFO L226 Difference]: Without dead ends: 11 [2024-10-12 18:35:56,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:35:56,625 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:56,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:35:56,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-10-12 18:35:56,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-10-12 18:35:56,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-10-12 18:35:56,657 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2024-10-12 18:35:56,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:56,657 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-10-12 18:35:56,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:56,658 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2024-10-12 18:35:56,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-12 18:35:56,658 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:56,658 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:56,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:35:56,659 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:56,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:56,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1225997519, now seen corresponding path program 1 times [2024-10-12 18:35:56,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:56,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927576355] [2024-10-12 18:35:56,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:56,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:56,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:56,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927576355] [2024-10-12 18:35:56,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927576355] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:35:56,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:35:56,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:35:56,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328958475] [2024-10-12 18:35:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:35:56,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 18:35:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 18:35:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:35:56,760 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:56,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:56,789 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2024-10-12 18:35:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 18:35:56,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-12 18:35:56,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:56,791 INFO L225 Difference]: With dead ends: 22 [2024-10-12 18:35:56,791 INFO L226 Difference]: Without dead ends: 16 [2024-10-12 18:35:56,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 18:35:56,794 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:56,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:35:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-12 18:35:56,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-12 18:35:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 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) [2024-10-12 18:35:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2024-10-12 18:35:56,803 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 9 [2024-10-12 18:35:56,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:56,803 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2024-10-12 18:35:56,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2024-10-12 18:35:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-12 18:35:56,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:56,807 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:56,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 18:35:56,808 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:56,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1180744990, now seen corresponding path program 1 times [2024-10-12 18:35:56,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:56,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048511969] [2024-10-12 18:35:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:56,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:56,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:56,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048511969] [2024-10-12 18:35:56,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048511969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:35:56,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:35:56,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:35:56,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638925557] [2024-10-12 18:35:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:35:56,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:35:56,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:35:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:35:56,953 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:56,999 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2024-10-12 18:35:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:35:57,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-12 18:35:57,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:57,003 INFO L225 Difference]: With dead ends: 20 [2024-10-12 18:35:57,003 INFO L226 Difference]: Without dead ends: 12 [2024-10-12 18:35:57,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:35:57,007 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 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 [2024-10-12 18:35:57,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:35:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-12 18:35:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-12 18:35:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2024-10-12 18:35:57,015 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 9 [2024-10-12 18:35:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:57,015 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2024-10-12 18:35:57,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2024-10-12 18:35:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-12 18:35:57,016 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:57,016 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:57,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 18:35:57,017 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:57,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:57,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1468808784, now seen corresponding path program 1 times [2024-10-12 18:35:57,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:57,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303744575] [2024-10-12 18:35:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:57,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:57,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:57,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303744575] [2024-10-12 18:35:57,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303744575] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:57,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25647718] [2024-10-12 18:35:57,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:57,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:57,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:57,166 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) [2024-10-12 18:35:57,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 18:35:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:57,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 18:35:57,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:57,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:57,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25647718] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:57,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:35:57,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-10-12 18:35:57,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821565583] [2024-10-12 18:35:57,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:35:57,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:35:57,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:57,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:35:57,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:35:57,349 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:57,371 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2024-10-12 18:35:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:35:57,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-12 18:35:57,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:57,374 INFO L225 Difference]: With dead ends: 17 [2024-10-12 18:35:57,374 INFO L226 Difference]: Without dead ends: 11 [2024-10-12 18:35:57,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:35:57,377 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:57,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:35:57,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-10-12 18:35:57,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-10-12 18:35:57,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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) [2024-10-12 18:35:57,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2024-10-12 18:35:57,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 10 [2024-10-12 18:35:57,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:57,386 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-10-12 18:35:57,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2024-10-12 18:35:57,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-12 18:35:57,387 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:57,387 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:57,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 18:35:57,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:57,592 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:57,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1514061313, now seen corresponding path program 1 times [2024-10-12 18:35:57,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:57,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929350497] [2024-10-12 18:35:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:57,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:57,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:57,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929350497] [2024-10-12 18:35:57,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929350497] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:57,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158821077] [2024-10-12 18:35:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:57,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:57,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:57,670 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) [2024-10-12 18:35:57,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 18:35:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:57,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 18:35:57,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:57,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:57,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158821077] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:57,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:35:57,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 8 [2024-10-12 18:35:57,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642322927] [2024-10-12 18:35:57,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:35:57,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:35:57,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:57,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:35:57,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:35:57,805 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:57,825 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-10-12 18:35:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:35:57,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-12 18:35:57,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:57,827 INFO L225 Difference]: With dead ends: 16 [2024-10-12 18:35:57,827 INFO L226 Difference]: Without dead ends: 12 [2024-10-12 18:35:57,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:35:57,828 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:57,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:35:57,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-12 18:35:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-12 18:35:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-10-12 18:35:57,834 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 10 [2024-10-12 18:35:57,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:57,834 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-10-12 18:35:57,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:57,834 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-10-12 18:35:57,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-12 18:35:57,834 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:57,834 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:57,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 18:35:58,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:58,036 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:58,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:58,036 INFO L85 PathProgramCache]: Analyzing trace with hash -307074158, now seen corresponding path program 1 times [2024-10-12 18:35:58,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:58,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770974634] [2024-10-12 18:35:58,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:58,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:58,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770974634] [2024-10-12 18:35:58,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770974634] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:58,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540613321] [2024-10-12 18:35:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:58,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:58,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:58,242 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) [2024-10-12 18:35:58,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 18:35:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:58,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 18:35:58,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:58,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:58,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540613321] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:58,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:58,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-10-12 18:35:58,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846195136] [2024-10-12 18:35:58,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:58,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 18:35:58,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:58,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 18:35:58,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:35:58,508 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2024-10-12 18:35:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:58,549 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2024-10-12 18:35:58,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:35:58,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 11 [2024-10-12 18:35:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:58,550 INFO L225 Difference]: With dead ends: 19 [2024-10-12 18:35:58,550 INFO L226 Difference]: Without dead ends: 15 [2024-10-12 18:35:58,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:35:58,553 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:58,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:35:58,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-12 18:35:58,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-10-12 18:35:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2024-10-12 18:35:58,559 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 11 [2024-10-12 18:35:58,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:58,560 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2024-10-12 18:35:58,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2024-10-12 18:35:58,560 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2024-10-12 18:35:58,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-12 18:35:58,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:58,561 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:58,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 18:35:58,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:58,765 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:58,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:58,765 INFO L85 PathProgramCache]: Analyzing trace with hash -927698911, now seen corresponding path program 2 times [2024-10-12 18:35:58,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:58,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376804364] [2024-10-12 18:35:58,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:58,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:58,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:58,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376804364] [2024-10-12 18:35:58,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376804364] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:58,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395631473] [2024-10-12 18:35:58,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:35:58,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:58,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:58,823 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) [2024-10-12 18:35:58,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 18:35:58,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:35:58,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:58,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 18:35:58,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:58,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:58,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395631473] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:58,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:58,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 7 [2024-10-12 18:35:58,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466063674] [2024-10-12 18:35:58,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:58,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 18:35:58,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:58,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 18:35:58,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:35:58,940 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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) [2024-10-12 18:35:59,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:59,027 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2024-10-12 18:35:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 18:35:59,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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) Word has length 12 [2024-10-12 18:35:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:59,029 INFO L225 Difference]: With dead ends: 54 [2024-10-12 18:35:59,029 INFO L226 Difference]: Without dead ends: 47 [2024-10-12 18:35:59,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:35:59,030 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:59,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 63 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:35:59,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-12 18:35:59,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2024-10-12 18:35:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 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) [2024-10-12 18:35:59,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2024-10-12 18:35:59,044 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 12 [2024-10-12 18:35:59,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:59,044 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2024-10-12 18:35:59,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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) [2024-10-12 18:35:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2024-10-12 18:35:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-12 18:35:59,045 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:59,045 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:59,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 18:35:59,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:59,250 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:59,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:59,250 INFO L85 PathProgramCache]: Analyzing trace with hash 475129488, now seen corresponding path program 3 times [2024-10-12 18:35:59,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:59,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897011184] [2024-10-12 18:35:59,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:59,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:59,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:59,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897011184] [2024-10-12 18:35:59,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897011184] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:59,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704080210] [2024-10-12 18:35:59,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:35:59,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:59,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:59,348 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) [2024-10-12 18:35:59,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 18:35:59,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 18:35:59,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:59,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 18:35:59,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:59,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:35:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704080210] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:59,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:59,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-10-12 18:35:59,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107535109] [2024-10-12 18:35:59,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:59,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 18:35:59,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 18:35:59,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:35:59,520 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 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) [2024-10-12 18:35:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:59,704 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2024-10-12 18:35:59,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 18:35:59,704 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 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) Word has length 12 [2024-10-12 18:35:59,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:59,705 INFO L225 Difference]: With dead ends: 50 [2024-10-12 18:35:59,705 INFO L226 Difference]: Without dead ends: 36 [2024-10-12 18:35:59,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-10-12 18:35:59,706 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:59,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 47 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-12 18:35:59,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-10-12 18:35:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2024-10-12 18:35:59,717 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 12 [2024-10-12 18:35:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:59,717 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2024-10-12 18:35:59,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 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) [2024-10-12 18:35:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2024-10-12 18:35:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-12 18:35:59,718 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:59,718 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:59,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 18:35:59,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:59,923 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:59,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:59,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1847797890, now seen corresponding path program 4 times [2024-10-12 18:35:59,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:59,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70586534] [2024-10-12 18:35:59,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:59,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:36:00,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:00,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70586534] [2024-10-12 18:36:00,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70586534] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617578395] [2024-10-12 18:36:00,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:36:00,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:00,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:00,089 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) [2024-10-12 18:36:00,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 18:36:00,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:36:00,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:00,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 18:36:00,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:36:00,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:36:00,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617578395] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:00,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:00,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-10-12 18:36:00,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356766911] [2024-10-12 18:36:00,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:00,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 18:36:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 18:36:00,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:36:00,254 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2024-10-12 18:36:00,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:00,314 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2024-10-12 18:36:00,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 18:36:00,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 14 [2024-10-12 18:36:00,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:00,316 INFO L225 Difference]: With dead ends: 53 [2024-10-12 18:36:00,318 INFO L226 Difference]: Without dead ends: 49 [2024-10-12 18:36:00,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:36:00,319 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:00,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 34 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:36:00,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-12 18:36:00,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2024-10-12 18:36:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 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) [2024-10-12 18:36:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 50 transitions. [2024-10-12 18:36:00,338 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 50 transitions. Word has length 14 [2024-10-12 18:36:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:00,338 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 50 transitions. [2024-10-12 18:36:00,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2024-10-12 18:36:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2024-10-12 18:36:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-12 18:36:00,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:00,340 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:00,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 18:36:00,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:00,541 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:00,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1448825137, now seen corresponding path program 5 times [2024-10-12 18:36:00,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:00,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806563463] [2024-10-12 18:36:00,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:00,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:36:00,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:00,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806563463] [2024-10-12 18:36:00,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806563463] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:00,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089208936] [2024-10-12 18:36:00,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:36:00,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:00,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:00,616 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) [2024-10-12 18:36:00,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 18:36:00,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-12 18:36:00,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:00,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 18:36:00,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:36:00,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:36:00,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089208936] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:00,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:00,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2024-10-12 18:36:00,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649018301] [2024-10-12 18:36:00,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:00,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 18:36:00,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:00,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 18:36:00,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:36:00,765 INFO L87 Difference]: Start difference. First operand 36 states and 50 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 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) [2024-10-12 18:36:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:00,924 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2024-10-12 18:36:00,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 18:36:00,926 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-12 18:36:00,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:00,927 INFO L225 Difference]: With dead ends: 82 [2024-10-12 18:36:00,927 INFO L226 Difference]: Without dead ends: 74 [2024-10-12 18:36:00,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-10-12 18:36:00,928 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:00,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 57 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:36:00,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-10-12 18:36:00,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2024-10-12 18:36:00,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 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) [2024-10-12 18:36:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 76 transitions. [2024-10-12 18:36:00,950 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 76 transitions. Word has length 15 [2024-10-12 18:36:00,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:00,950 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 76 transitions. [2024-10-12 18:36:00,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 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) [2024-10-12 18:36:00,951 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 76 transitions. [2024-10-12 18:36:00,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-12 18:36:00,951 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:00,953 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:00,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 18:36:01,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:01,158 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:01,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:01,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1986832546, now seen corresponding path program 6 times [2024-10-12 18:36:01,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:01,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355534667] [2024-10-12 18:36:01,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:01,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:36:01,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:01,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355534667] [2024-10-12 18:36:01,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355534667] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:01,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45042265] [2024-10-12 18:36:01,264 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:36:01,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:01,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:01,266 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) [2024-10-12 18:36:01,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 18:36:01,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-12 18:36:01,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:01,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 18:36:01,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:36:01,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:36:01,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45042265] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:01,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:01,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-12 18:36:01,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642824784] [2024-10-12 18:36:01,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:01,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 18:36:01,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:01,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 18:36:01,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:36:01,442 INFO L87 Difference]: Start difference. First operand 55 states and 76 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 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) [2024-10-12 18:36:01,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:01,538 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2024-10-12 18:36:01,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 18:36:01,539 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-12 18:36:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:01,539 INFO L225 Difference]: With dead ends: 59 [2024-10-12 18:36:01,539 INFO L226 Difference]: Without dead ends: 47 [2024-10-12 18:36:01,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-10-12 18:36:01,540 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:01,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:36:01,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-12 18:36:01,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-12 18:36:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.434782608695652) internal successors, (66), 46 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) [2024-10-12 18:36:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2024-10-12 18:36:01,579 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 15 [2024-10-12 18:36:01,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:01,579 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2024-10-12 18:36:01,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 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) [2024-10-12 18:36:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2024-10-12 18:36:01,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-12 18:36:01,580 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:01,580 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:01,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 18:36:01,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 18:36:01,781 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:01,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:01,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1372418386, now seen corresponding path program 7 times [2024-10-12 18:36:01,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:01,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717729187] [2024-10-12 18:36:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:01,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:36:01,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:01,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717729187] [2024-10-12 18:36:01,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717729187] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:01,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459215916] [2024-10-12 18:36:01,869 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:36:01,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:01,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:01,871 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) [2024-10-12 18:36:01,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 18:36:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:01,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 18:36:01,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:36:01,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 18:36:02,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459215916] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:02,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:02,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2024-10-12 18:36:02,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301910590] [2024-10-12 18:36:02,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:02,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 18:36:02,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:02,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 18:36:02,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:36:02,031 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2024-10-12 18:36:02,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:02,146 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2024-10-12 18:36:02,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 18:36:02,148 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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 15 [2024-10-12 18:36:02,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:02,148 INFO L225 Difference]: With dead ends: 66 [2024-10-12 18:36:02,148 INFO L226 Difference]: Without dead ends: 51 [2024-10-12 18:36:02,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-10-12 18:36:02,149 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:02,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 47 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:36:02,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-12 18:36:02,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-12 18:36:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.32) internal successors, (66), 50 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) [2024-10-12 18:36:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2024-10-12 18:36:02,166 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 15 [2024-10-12 18:36:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:02,166 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2024-10-12 18:36:02,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2024-10-12 18:36:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2024-10-12 18:36:02,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-12 18:36:02,167 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:02,167 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:02,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:02,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:02,372 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:02,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1927118544, now seen corresponding path program 8 times [2024-10-12 18:36:02,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:02,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204818332] [2024-10-12 18:36:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:02,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 18:36:02,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:02,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204818332] [2024-10-12 18:36:02,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204818332] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:02,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731873727] [2024-10-12 18:36:02,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:36:02,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:02,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:02,531 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) [2024-10-12 18:36:02,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 18:36:02,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:36:02,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:02,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 18:36:02,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:36:02,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 18:36:02,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731873727] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:02,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:02,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 6] total 17 [2024-10-12 18:36:02,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451542704] [2024-10-12 18:36:02,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:02,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 18:36:02,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:02,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 18:36:02,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-10-12 18:36:02,708 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:02,909 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2024-10-12 18:36:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 18:36:02,909 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-12 18:36:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:02,910 INFO L225 Difference]: With dead ends: 76 [2024-10-12 18:36:02,910 INFO L226 Difference]: Without dead ends: 67 [2024-10-12 18:36:02,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2024-10-12 18:36:02,911 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:02,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 75 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:36:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-12 18:36:02,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 51. [2024-10-12 18:36:02,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.28) internal successors, (64), 50 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) [2024-10-12 18:36:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2024-10-12 18:36:02,932 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 16 [2024-10-12 18:36:02,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:02,932 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2024-10-12 18:36:02,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2024-10-12 18:36:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-12 18:36:02,933 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:02,933 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:02,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 18:36:03,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 18:36:03,134 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:03,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1519806738, now seen corresponding path program 9 times [2024-10-12 18:36:03,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:03,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751366868] [2024-10-12 18:36:03,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:03,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:36:03,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:03,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751366868] [2024-10-12 18:36:03,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751366868] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:03,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273904455] [2024-10-12 18:36:03,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:36:03,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:03,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:03,304 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) [2024-10-12 18:36:03,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 18:36:03,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-12 18:36:03,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:03,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 18:36:03,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:36:03,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:36:03,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273904455] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:03,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:03,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-10-12 18:36:03,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112238783] [2024-10-12 18:36:03,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:03,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 18:36:03,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 18:36:03,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:36:03,477 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:03,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:03,545 INFO L93 Difference]: Finished difference Result 85 states and 106 transitions. [2024-10-12 18:36:03,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 18:36:03,545 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-12 18:36:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:03,546 INFO L225 Difference]: With dead ends: 85 [2024-10-12 18:36:03,546 INFO L226 Difference]: Without dead ends: 77 [2024-10-12 18:36:03,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 8 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:36:03,547 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:03,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 41 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:36:03,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-12 18:36:03,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 53. [2024-10-12 18:36:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 52 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2024-10-12 18:36:03,570 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 17 [2024-10-12 18:36:03,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:03,571 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2024-10-12 18:36:03,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2024-10-12 18:36:03,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-12 18:36:03,573 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:03,573 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:03,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 18:36:03,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 18:36:03,774 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:03,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:03,774 INFO L85 PathProgramCache]: Analyzing trace with hash -630605488, now seen corresponding path program 10 times [2024-10-12 18:36:03,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:03,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972819499] [2024-10-12 18:36:03,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:03,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:36:03,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:03,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972819499] [2024-10-12 18:36:03,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972819499] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:03,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936144862] [2024-10-12 18:36:03,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:36:03,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:03,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:03,896 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) [2024-10-12 18:36:03,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 18:36:03,941 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:36:03,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:03,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 18:36:03,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:36:03,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:04,157 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:36:04,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936144862] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:04,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:04,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 19 [2024-10-12 18:36:04,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49850837] [2024-10-12 18:36:04,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:04,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 18:36:04,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:04,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 18:36:04,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-10-12 18:36:04,159 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 20 states, 20 states have (on average 1.45) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:05,134 INFO L93 Difference]: Finished difference Result 99 states and 129 transitions. [2024-10-12 18:36:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-12 18:36:05,134 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.45) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-10-12 18:36:05,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:05,136 INFO L225 Difference]: With dead ends: 99 [2024-10-12 18:36:05,136 INFO L226 Difference]: Without dead ends: 77 [2024-10-12 18:36:05,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=356, Invalid=1900, Unknown=0, NotChecked=0, Total=2256 [2024-10-12 18:36:05,139 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 83 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:05,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 90 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:36:05,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-12 18:36:05,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2024-10-12 18:36:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.271186440677966) internal successors, (75), 59 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:05,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-10-12 18:36:05,162 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 18 [2024-10-12 18:36:05,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:05,162 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-10-12 18:36:05,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.45) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:05,162 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-10-12 18:36:05,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-12 18:36:05,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:05,163 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:05,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:05,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 18:36:05,367 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:05,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:05,368 INFO L85 PathProgramCache]: Analyzing trace with hash 39467650, now seen corresponding path program 11 times [2024-10-12 18:36:05,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:05,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855076559] [2024-10-12 18:36:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:05,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 18:36:05,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855076559] [2024-10-12 18:36:05,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855076559] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:05,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927370970] [2024-10-12 18:36:05,542 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:36:05,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:05,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:05,544 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) [2024-10-12 18:36:05,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 18:36:05,598 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-12 18:36:05,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:05,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 18:36:05,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 18:36:05,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 18:36:05,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927370970] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:05,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:05,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-10-12 18:36:05,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703808729] [2024-10-12 18:36:05,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:05,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 18:36:05,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 18:36:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 18:36:05,716 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:05,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:05,827 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2024-10-12 18:36:05,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 18:36:05,828 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-12 18:36:05,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:05,828 INFO L225 Difference]: With dead ends: 85 [2024-10-12 18:36:05,828 INFO L226 Difference]: Without dead ends: 76 [2024-10-12 18:36:05,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 11 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-12 18:36:05,829 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:05,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 60 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:36:05,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-12 18:36:05,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2024-10-12 18:36:05,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:05,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2024-10-12 18:36:05,850 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 20 [2024-10-12 18:36:05,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:05,850 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2024-10-12 18:36:05,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:05,851 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2024-10-12 18:36:05,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-12 18:36:05,851 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:05,851 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:05,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:06,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 18:36:06,052 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:06,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:06,052 INFO L85 PathProgramCache]: Analyzing trace with hash -273828190, now seen corresponding path program 12 times [2024-10-12 18:36:06,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:06,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077127681] [2024-10-12 18:36:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:06,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 18:36:06,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:06,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077127681] [2024-10-12 18:36:06,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077127681] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:06,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036231675] [2024-10-12 18:36:06,215 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:36:06,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:06,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:06,216 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) [2024-10-12 18:36:06,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 18:36:06,255 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-12 18:36:06,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:06,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 18:36:06,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 18:36:06,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 18:36:06,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036231675] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:06,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:06,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 21 [2024-10-12 18:36:06,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468495636] [2024-10-12 18:36:06,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:06,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 18:36:06,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:06,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 18:36:06,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-10-12 18:36:06,457 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:06,925 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2024-10-12 18:36:06,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-12 18:36:06,926 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-12 18:36:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:06,926 INFO L225 Difference]: With dead ends: 86 [2024-10-12 18:36:06,926 INFO L226 Difference]: Without dead ends: 71 [2024-10-12 18:36:06,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2024-10-12 18:36:06,928 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 23 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:06,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 98 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:36:06,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-12 18:36:06,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2024-10-12 18:36:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.234375) internal successors, (79), 64 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) [2024-10-12 18:36:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2024-10-12 18:36:06,946 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 20 [2024-10-12 18:36:06,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:06,947 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2024-10-12 18:36:06,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2024-10-12 18:36:06,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-12 18:36:06,947 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:06,947 INFO L215 NwaCegarLoop]: trace histogram [7, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:06,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 18:36:07,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:07,152 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:07,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:07,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1688897729, now seen corresponding path program 13 times [2024-10-12 18:36:07,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:07,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233809619] [2024-10-12 18:36:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:07,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 18:36:07,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:07,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233809619] [2024-10-12 18:36:07,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233809619] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:07,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656097] [2024-10-12 18:36:07,335 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:36:07,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:07,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:07,337 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) [2024-10-12 18:36:07,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 18:36:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:07,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-12 18:36:07,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:36:07,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:36:07,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656097] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:07,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:07,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 8] total 23 [2024-10-12 18:36:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262644483] [2024-10-12 18:36:07,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:07,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-12 18:36:07,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-12 18:36:07,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2024-10-12 18:36:07,596 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 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) [2024-10-12 18:36:07,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:07,906 INFO L93 Difference]: Finished difference Result 116 states and 149 transitions. [2024-10-12 18:36:07,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-12 18:36:07,907 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 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 20 [2024-10-12 18:36:07,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:07,908 INFO L225 Difference]: With dead ends: 116 [2024-10-12 18:36:07,908 INFO L226 Difference]: Without dead ends: 107 [2024-10-12 18:36:07,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2024-10-12 18:36:07,909 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 50 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:07,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 112 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:36:07,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-12 18:36:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 67. [2024-10-12 18:36:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2024-10-12 18:36:07,928 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 20 [2024-10-12 18:36:07,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:07,928 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2024-10-12 18:36:07,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 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) [2024-10-12 18:36:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2024-10-12 18:36:07,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-12 18:36:07,929 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:07,929 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:07,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:08,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 18:36:08,134 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:08,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:08,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1440760222, now seen corresponding path program 14 times [2024-10-12 18:36:08,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:08,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635339147] [2024-10-12 18:36:08,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:08,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 18:36:08,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:08,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635339147] [2024-10-12 18:36:08,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635339147] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:08,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321187580] [2024-10-12 18:36:08,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:36:08,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:08,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:08,284 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) [2024-10-12 18:36:08,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 18:36:08,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:36:08,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:08,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-12 18:36:08,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 18:36:08,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 18:36:08,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321187580] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:08,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:08,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 23 [2024-10-12 18:36:08,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892694371] [2024-10-12 18:36:08,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:08,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 18:36:08,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 18:36:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2024-10-12 18:36:08,570 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:09,972 INFO L93 Difference]: Finished difference Result 133 states and 162 transitions. [2024-10-12 18:36:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-12 18:36:09,973 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-12 18:36:09,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:09,974 INFO L225 Difference]: With dead ends: 133 [2024-10-12 18:36:09,974 INFO L226 Difference]: Without dead ends: 106 [2024-10-12 18:36:09,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=678, Invalid=3744, Unknown=0, NotChecked=0, Total=4422 [2024-10-12 18:36:09,976 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 151 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:09,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 83 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:36:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-12 18:36:09,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 76. [2024-10-12 18:36:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 75 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) [2024-10-12 18:36:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2024-10-12 18:36:09,998 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 21 [2024-10-12 18:36:09,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:09,999 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2024-10-12 18:36:09,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2024-10-12 18:36:09,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-12 18:36:10,000 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:10,000 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:10,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-12 18:36:10,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:10,200 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:10,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:10,201 INFO L85 PathProgramCache]: Analyzing trace with hash 493700754, now seen corresponding path program 15 times [2024-10-12 18:36:10,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:10,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84907313] [2024-10-12 18:36:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:10,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:10,389 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 18:36:10,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:10,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84907313] [2024-10-12 18:36:10,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84907313] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:10,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826456945] [2024-10-12 18:36:10,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:36:10,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:10,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:10,392 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) [2024-10-12 18:36:10,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 18:36:10,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-12 18:36:10,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:10,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-12 18:36:10,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 18:36:10,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 18:36:10,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826456945] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:10,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:10,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-10-12 18:36:10,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479392201] [2024-10-12 18:36:10,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:10,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 18:36:10,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:10,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 18:36:10,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:36:10,617 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 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) [2024-10-12 18:36:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:10,711 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2024-10-12 18:36:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 18:36:10,711 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 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) Word has length 23 [2024-10-12 18:36:10,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:10,712 INFO L225 Difference]: With dead ends: 99 [2024-10-12 18:36:10,712 INFO L226 Difference]: Without dead ends: 89 [2024-10-12 18:36:10,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 12 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:36:10,713 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:10,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 80 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:36:10,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-12 18:36:10,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2024-10-12 18:36:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 81 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-10-12 18:36:10,733 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 23 [2024-10-12 18:36:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:10,733 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-10-12 18:36:10,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 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) [2024-10-12 18:36:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-10-12 18:36:10,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-12 18:36:10,734 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:10,734 INFO L215 NwaCegarLoop]: trace histogram [8, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:10,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-12 18:36:10,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:10,934 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:10,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:10,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1792301602, now seen corresponding path program 16 times [2024-10-12 18:36:10,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:10,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599940838] [2024-10-12 18:36:10,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:10,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 18:36:11,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:11,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599940838] [2024-10-12 18:36:11,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599940838] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:11,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756770856] [2024-10-12 18:36:11,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:36:11,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:11,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:11,124 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) [2024-10-12 18:36:11,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 18:36:11,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:36:11,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:11,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-12 18:36:11,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 18:36:11,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 18:36:11,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756770856] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:11,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:11,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 10] total 27 [2024-10-12 18:36:11,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988291963] [2024-10-12 18:36:11,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:11,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-12 18:36:11,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:11,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-12 18:36:11,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2024-10-12 18:36:11,452 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:12,156 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2024-10-12 18:36:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-12 18:36:12,157 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-10-12 18:36:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:12,158 INFO L225 Difference]: With dead ends: 116 [2024-10-12 18:36:12,158 INFO L226 Difference]: Without dead ends: 95 [2024-10-12 18:36:12,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=315, Invalid=2037, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 18:36:12,159 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:12,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 148 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 18:36:12,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-12 18:36:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2024-10-12 18:36:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.197674418604651) internal successors, (103), 86 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2024-10-12 18:36:12,187 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 23 [2024-10-12 18:36:12,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:12,188 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2024-10-12 18:36:12,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:12,188 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2024-10-12 18:36:12,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-12 18:36:12,188 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:12,188 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:12,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:12,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:12,389 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:12,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:12,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1382259728, now seen corresponding path program 17 times [2024-10-12 18:36:12,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:12,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487869391] [2024-10-12 18:36:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:12,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 18:36:12,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:12,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487869391] [2024-10-12 18:36:12,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487869391] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:12,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999600956] [2024-10-12 18:36:12,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:36:12,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:12,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:12,581 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) [2024-10-12 18:36:12,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-12 18:36:12,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-12 18:36:12,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:12,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-12 18:36:12,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 18:36:12,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 18:36:13,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999600956] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:13,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:13,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 32 [2024-10-12 18:36:13,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863983435] [2024-10-12 18:36:13,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:13,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-12 18:36:13,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:13,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-12 18:36:13,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2024-10-12 18:36:13,094 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 32 states, 32 states have (on average 1.375) internal successors, (44), 32 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) [2024-10-12 18:36:13,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:13,762 INFO L93 Difference]: Finished difference Result 162 states and 198 transitions. [2024-10-12 18:36:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-12 18:36:13,763 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.375) internal successors, (44), 32 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 24 [2024-10-12 18:36:13,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:13,764 INFO L225 Difference]: With dead ends: 162 [2024-10-12 18:36:13,764 INFO L226 Difference]: Without dead ends: 144 [2024-10-12 18:36:13,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=446, Invalid=1716, Unknown=0, NotChecked=0, Total=2162 [2024-10-12 18:36:13,765 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 122 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:13,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 105 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:36:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-10-12 18:36:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 90. [2024-10-12 18:36:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.202247191011236) internal successors, (107), 89 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2024-10-12 18:36:13,789 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 24 [2024-10-12 18:36:13,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:13,790 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2024-10-12 18:36:13,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.375) internal successors, (44), 32 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) [2024-10-12 18:36:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2024-10-12 18:36:13,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 18:36:13,790 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:13,790 INFO L215 NwaCegarLoop]: trace histogram [10, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:13,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:13,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:13,992 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:13,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:13,993 INFO L85 PathProgramCache]: Analyzing trace with hash -860812111, now seen corresponding path program 18 times [2024-10-12 18:36:13,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:13,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493954820] [2024-10-12 18:36:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:13,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 18:36:14,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:14,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493954820] [2024-10-12 18:36:14,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493954820] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:14,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620650101] [2024-10-12 18:36:14,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:36:14,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:14,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:14,236 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) [2024-10-12 18:36:14,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-12 18:36:14,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-12 18:36:14,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:14,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 18:36:14,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 18:36:14,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 18:36:14,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620650101] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:14,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:14,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 30 [2024-10-12 18:36:14,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624050849] [2024-10-12 18:36:14,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:14,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-12 18:36:14,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:14,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-12 18:36:14,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2024-10-12 18:36:14,674 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:15,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:15,717 INFO L93 Difference]: Finished difference Result 133 states and 162 transitions. [2024-10-12 18:36:15,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-12 18:36:15,717 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-12 18:36:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:15,718 INFO L225 Difference]: With dead ends: 133 [2024-10-12 18:36:15,718 INFO L226 Difference]: Without dead ends: 122 [2024-10-12 18:36:15,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=844, Invalid=3848, Unknown=0, NotChecked=0, Total=4692 [2024-10-12 18:36:15,720 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 252 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:15,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 188 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 18:36:15,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-12 18:36:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 89. [2024-10-12 18:36:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 88 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) [2024-10-12 18:36:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2024-10-12 18:36:15,750 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 25 [2024-10-12 18:36:15,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:15,750 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2024-10-12 18:36:15,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:15,750 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2024-10-12 18:36:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 18:36:15,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:15,751 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:15,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:15,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-12 18:36:15,951 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:15,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:15,952 INFO L85 PathProgramCache]: Analyzing trace with hash -553341822, now seen corresponding path program 19 times [2024-10-12 18:36:15,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:15,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511713443] [2024-10-12 18:36:15,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:15,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 18:36:16,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:16,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511713443] [2024-10-12 18:36:16,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511713443] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:16,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828448398] [2024-10-12 18:36:16,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:36:16,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:16,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:16,174 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) [2024-10-12 18:36:16,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-12 18:36:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:16,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-12 18:36:16,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 18:36:16,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 18:36:16,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828448398] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:16,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:16,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 11 [2024-10-12 18:36:16,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132863456] [2024-10-12 18:36:16,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:16,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 18:36:16,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 18:36:16,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-12 18:36:16,408 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2024-10-12 18:36:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:16,538 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2024-10-12 18:36:16,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 18:36:16,539 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) Word has length 26 [2024-10-12 18:36:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:16,540 INFO L225 Difference]: With dead ends: 141 [2024-10-12 18:36:16,540 INFO L226 Difference]: Without dead ends: 130 [2024-10-12 18:36:16,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 15 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-12 18:36:16,541 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:16,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 89 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:36:16,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-10-12 18:36:16,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 97. [2024-10-12 18:36:16,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 96 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2024-10-12 18:36:16,572 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 26 [2024-10-12 18:36:16,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:16,572 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2024-10-12 18:36:16,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2024-10-12 18:36:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2024-10-12 18:36:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-12 18:36:16,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:16,572 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:16,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:16,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-12 18:36:16,773 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:16,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:16,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2123332574, now seen corresponding path program 20 times [2024-10-12 18:36:16,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:16,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733341521] [2024-10-12 18:36:16,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:16,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 18:36:16,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:16,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733341521] [2024-10-12 18:36:16,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733341521] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:16,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111582516] [2024-10-12 18:36:16,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:36:16,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:16,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:16,987 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) [2024-10-12 18:36:16,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-12 18:36:17,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:36:17,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:17,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-12 18:36:17,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 18:36:17,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 18:36:17,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111582516] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:17,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:17,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 31 [2024-10-12 18:36:17,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138247313] [2024-10-12 18:36:17,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:17,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-12 18:36:17,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:17,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-12 18:36:17,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2024-10-12 18:36:17,471 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand has 32 states, 32 states have (on average 1.28125) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:22,021 INFO L93 Difference]: Finished difference Result 217 states and 265 transitions. [2024-10-12 18:36:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-10-12 18:36:22,021 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.28125) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-12 18:36:22,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:22,023 INFO L225 Difference]: With dead ends: 217 [2024-10-12 18:36:22,023 INFO L226 Difference]: Without dead ends: 180 [2024-10-12 18:36:22,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3708 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1949, Invalid=10933, Unknown=0, NotChecked=0, Total=12882 [2024-10-12 18:36:22,027 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 343 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:22,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 123 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:36:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-10-12 18:36:22,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 120. [2024-10-12 18:36:22,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 119 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:22,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 144 transitions. [2024-10-12 18:36:22,076 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 144 transitions. Word has length 27 [2024-10-12 18:36:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:22,076 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 144 transitions. [2024-10-12 18:36:22,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.28125) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:22,076 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 144 transitions. [2024-10-12 18:36:22,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 18:36:22,077 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:22,077 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:22,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:22,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:22,278 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:22,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:22,278 INFO L85 PathProgramCache]: Analyzing trace with hash 5440530, now seen corresponding path program 21 times [2024-10-12 18:36:22,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:22,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660138105] [2024-10-12 18:36:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:22,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:36:22,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:22,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660138105] [2024-10-12 18:36:22,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660138105] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:22,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016890271] [2024-10-12 18:36:22,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:36:22,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:22,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:22,541 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) [2024-10-12 18:36:22,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-12 18:36:22,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-12 18:36:22,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:22,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-12 18:36:22,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:36:22,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:36:22,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016890271] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:22,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:22,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-10-12 18:36:22,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729410927] [2024-10-12 18:36:22,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:22,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 18:36:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 18:36:22,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:36:22,861 INFO L87 Difference]: Start difference. First operand 120 states and 144 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 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) [2024-10-12 18:36:23,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:23,035 INFO L93 Difference]: Finished difference Result 152 states and 181 transitions. [2024-10-12 18:36:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 18:36:23,036 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-12 18:36:23,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:23,036 INFO L225 Difference]: With dead ends: 152 [2024-10-12 18:36:23,036 INFO L226 Difference]: Without dead ends: 140 [2024-10-12 18:36:23,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 16 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:36:23,037 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:23,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 106 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:36:23,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-10-12 18:36:23,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 127. [2024-10-12 18:36:23,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.2142857142857142) internal successors, (153), 126 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 153 transitions. [2024-10-12 18:36:23,084 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 153 transitions. Word has length 29 [2024-10-12 18:36:23,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:23,084 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 153 transitions. [2024-10-12 18:36:23,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 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) [2024-10-12 18:36:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 153 transitions. [2024-10-12 18:36:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 18:36:23,085 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:23,085 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:23,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:23,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:23,285 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:23,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:23,286 INFO L85 PathProgramCache]: Analyzing trace with hash -442528957, now seen corresponding path program 22 times [2024-10-12 18:36:23,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:23,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273019555] [2024-10-12 18:36:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:23,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 18:36:23,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:23,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273019555] [2024-10-12 18:36:23,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273019555] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:23,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826584673] [2024-10-12 18:36:23,573 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:36:23,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:23,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:23,576 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) [2024-10-12 18:36:23,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-12 18:36:23,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:36:23,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:23,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-12 18:36:23,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 18:36:23,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-10-12 18:36:23,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826584673] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:23,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:23,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 12] total 34 [2024-10-12 18:36:23,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414883239] [2024-10-12 18:36:23,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:23,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-12 18:36:23,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:23,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-12 18:36:23,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2024-10-12 18:36:23,958 INFO L87 Difference]: Start difference. First operand 127 states and 153 transitions. Second operand has 34 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 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) [2024-10-12 18:36:25,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:25,503 INFO L93 Difference]: Finished difference Result 173 states and 211 transitions. [2024-10-12 18:36:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-12 18:36:25,504 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 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 29 [2024-10-12 18:36:25,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:25,505 INFO L225 Difference]: With dead ends: 173 [2024-10-12 18:36:25,505 INFO L226 Difference]: Without dead ends: 141 [2024-10-12 18:36:25,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=525, Invalid=4167, Unknown=0, NotChecked=0, Total=4692 [2024-10-12 18:36:25,507 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 54 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:25,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 313 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 18:36:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-10-12 18:36:25,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 130. [2024-10-12 18:36:25,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.186046511627907) internal successors, (153), 129 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2024-10-12 18:36:25,561 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 29 [2024-10-12 18:36:25,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:25,561 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2024-10-12 18:36:25,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 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) [2024-10-12 18:36:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2024-10-12 18:36:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-12 18:36:25,561 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:25,561 INFO L215 NwaCegarLoop]: trace histogram [12, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:25,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:25,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-12 18:36:25,763 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:25,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash 939081186, now seen corresponding path program 23 times [2024-10-12 18:36:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:25,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341937710] [2024-10-12 18:36:25,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:25,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 18:36:26,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:26,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341937710] [2024-10-12 18:36:26,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341937710] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:26,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965206993] [2024-10-12 18:36:26,049 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:36:26,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:26,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:26,050 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) [2024-10-12 18:36:26,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-12 18:36:26,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-10-12 18:36:26,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:26,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-12 18:36:26,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:36:26,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-12 18:36:26,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965206993] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:26,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:26,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 12] total 36 [2024-10-12 18:36:26,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890526713] [2024-10-12 18:36:26,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:26,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-12 18:36:26,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:26,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-12 18:36:26,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=996, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 18:36:26,473 INFO L87 Difference]: Start difference. First operand 130 states and 153 transitions. Second operand has 36 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 36 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:27,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:27,421 INFO L93 Difference]: Finished difference Result 228 states and 279 transitions. [2024-10-12 18:36:27,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-10-12 18:36:27,422 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 36 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-12 18:36:27,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:27,423 INFO L225 Difference]: With dead ends: 228 [2024-10-12 18:36:27,423 INFO L226 Difference]: Without dead ends: 217 [2024-10-12 18:36:27,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=918, Invalid=2864, Unknown=0, NotChecked=0, Total=3782 [2024-10-12 18:36:27,425 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 182 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:27,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 254 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:36:27,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-10-12 18:36:27,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 130. [2024-10-12 18:36:27,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 129 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2024-10-12 18:36:27,493 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 29 [2024-10-12 18:36:27,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:27,494 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2024-10-12 18:36:27,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 36 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2024-10-12 18:36:27,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-12 18:36:27,494 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:27,495 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:27,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:27,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-12 18:36:27,695 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:27,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2094559536, now seen corresponding path program 24 times [2024-10-12 18:36:27,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:27,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768786814] [2024-10-12 18:36:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:27,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:36:27,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:27,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768786814] [2024-10-12 18:36:27,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768786814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:27,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170673583] [2024-10-12 18:36:27,950 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:36:27,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:27,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:27,952 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) [2024-10-12 18:36:27,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-12 18:36:28,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-12 18:36:28,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:28,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-12 18:36:28,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:36:28,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:36:28,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170673583] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:28,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:28,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18] total 42 [2024-10-12 18:36:28,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182686624] [2024-10-12 18:36:28,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:28,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-12 18:36:28,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:28,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-12 18:36:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 18:36:28,582 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand has 42 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 42 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:30,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:30,006 INFO L93 Difference]: Finished difference Result 246 states and 281 transitions. [2024-10-12 18:36:30,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-10-12 18:36:30,007 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 42 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-10-12 18:36:30,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:30,008 INFO L225 Difference]: With dead ends: 246 [2024-10-12 18:36:30,009 INFO L226 Difference]: Without dead ends: 224 [2024-10-12 18:36:30,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=975, Invalid=3855, Unknown=0, NotChecked=0, Total=4830 [2024-10-12 18:36:30,011 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 185 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:30,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 139 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:36:30,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-10-12 18:36:30,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 127. [2024-10-12 18:36:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.1666666666666667) internal successors, (147), 126 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:30,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2024-10-12 18:36:30,065 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 30 [2024-10-12 18:36:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:30,065 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2024-10-12 18:36:30,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 42 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:30,065 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2024-10-12 18:36:30,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-12 18:36:30,066 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:30,066 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:30,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-12 18:36:30,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-12 18:36:30,266 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:30,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:30,267 INFO L85 PathProgramCache]: Analyzing trace with hash -2115600766, now seen corresponding path program 25 times [2024-10-12 18:36:30,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:30,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259294817] [2024-10-12 18:36:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:30,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 18:36:30,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:30,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259294817] [2024-10-12 18:36:30,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259294817] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:30,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623978774] [2024-10-12 18:36:30,556 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:36:30,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:30,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:30,558 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) [2024-10-12 18:36:30,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-12 18:36:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:30,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-12 18:36:30,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 18:36:30,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 18:36:30,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623978774] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:30,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:30,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 13 [2024-10-12 18:36:30,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576684454] [2024-10-12 18:36:30,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:30,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 18:36:30,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:30,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 18:36:30,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:36:30,860 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 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) [2024-10-12 18:36:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:31,165 INFO L93 Difference]: Finished difference Result 220 states and 251 transitions. [2024-10-12 18:36:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 18:36:31,166 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-10-12 18:36:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:31,167 INFO L225 Difference]: With dead ends: 220 [2024-10-12 18:36:31,167 INFO L226 Difference]: Without dead ends: 207 [2024-10-12 18:36:31,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 19 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:36:31,168 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:31,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 118 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:36:31,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-10-12 18:36:31,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 143. [2024-10-12 18:36:31,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.1971830985915493) internal successors, (170), 142 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:31,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2024-10-12 18:36:31,263 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 32 [2024-10-12 18:36:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:31,263 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2024-10-12 18:36:31,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 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) [2024-10-12 18:36:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2024-10-12 18:36:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-12 18:36:31,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:31,263 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:31,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:31,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:31,468 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:31,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:31,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1645672930, now seen corresponding path program 26 times [2024-10-12 18:36:31,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:31,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115467073] [2024-10-12 18:36:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:31,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 18:36:31,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:31,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115467073] [2024-10-12 18:36:31,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115467073] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:31,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214923417] [2024-10-12 18:36:31,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:36:31,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:31,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:31,748 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) [2024-10-12 18:36:31,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-12 18:36:31,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:36:31,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:31,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-12 18:36:31,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 18:36:31,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-12 18:36:32,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214923417] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:32,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:32,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 39 [2024-10-12 18:36:32,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520107050] [2024-10-12 18:36:32,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:32,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-12 18:36:32,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:32,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-12 18:36:32,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1319, Unknown=0, NotChecked=0, Total=1560 [2024-10-12 18:36:32,317 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand has 40 states, 40 states have (on average 1.225) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:44,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:44,322 INFO L93 Difference]: Finished difference Result 313 states and 376 transitions. [2024-10-12 18:36:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2024-10-12 18:36:44,322 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.225) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 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 [2024-10-12 18:36:44,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:44,324 INFO L225 Difference]: With dead ends: 313 [2024-10-12 18:36:44,324 INFO L226 Difference]: Without dead ends: 261 [2024-10-12 18:36:44,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9895 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=4521, Invalid=25235, Unknown=0, NotChecked=0, Total=29756 [2024-10-12 18:36:44,329 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 638 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:44,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 146 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 18:36:44,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-10-12 18:36:44,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 167. [2024-10-12 18:36:44,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.1987951807228916) internal successors, (199), 166 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 199 transitions. [2024-10-12 18:36:44,421 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 199 transitions. Word has length 33 [2024-10-12 18:36:44,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:44,422 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 199 transitions. [2024-10-12 18:36:44,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.225) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:44,422 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 199 transitions. [2024-10-12 18:36:44,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 18:36:44,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:44,423 INFO L215 NwaCegarLoop]: trace histogram [15, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:44,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:44,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:44,623 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:44,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash -861960767, now seen corresponding path program 27 times [2024-10-12 18:36:44,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:44,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817820877] [2024-10-12 18:36:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:44,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 18:36:45,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:45,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817820877] [2024-10-12 18:36:45,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817820877] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:45,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367274050] [2024-10-12 18:36:45,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:36:45,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:45,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:45,035 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) [2024-10-12 18:36:45,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-12 18:36:45,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-12 18:36:45,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:45,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 18:36:45,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-10-12 18:36:45,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-10-12 18:36:45,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367274050] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:45,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:45,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14, 14] total 42 [2024-10-12 18:36:45,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991241608] [2024-10-12 18:36:45,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:45,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-12 18:36:45,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-12 18:36:45,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1576, Unknown=0, NotChecked=0, Total=1722 [2024-10-12 18:36:45,821 INFO L87 Difference]: Start difference. First operand 167 states and 199 transitions. Second operand has 42 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 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) [2024-10-12 18:36:49,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:49,604 INFO L93 Difference]: Finished difference Result 260 states and 318 transitions. [2024-10-12 18:36:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-10-12 18:36:49,604 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 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 34 [2024-10-12 18:36:49,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:49,605 INFO L225 Difference]: With dead ends: 260 [2024-10-12 18:36:49,605 INFO L226 Difference]: Without dead ends: 221 [2024-10-12 18:36:49,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3505 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1183, Invalid=14317, Unknown=0, NotChecked=0, Total=15500 [2024-10-12 18:36:49,607 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 112 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 2691 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:49,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 373 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2691 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 18:36:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-10-12 18:36:49,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 192. [2024-10-12 18:36:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.162303664921466) internal successors, (222), 191 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) [2024-10-12 18:36:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 222 transitions. [2024-10-12 18:36:49,720 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 222 transitions. Word has length 34 [2024-10-12 18:36:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:49,720 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 222 transitions. [2024-10-12 18:36:49,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 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) [2024-10-12 18:36:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 222 transitions. [2024-10-12 18:36:49,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-12 18:36:49,721 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:49,721 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:49,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:49,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:49,922 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:49,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:49,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2057068142, now seen corresponding path program 28 times [2024-10-12 18:36:49,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:49,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741668729] [2024-10-12 18:36:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:49,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-12 18:36:50,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:50,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741668729] [2024-10-12 18:36:50,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741668729] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:50,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722387957] [2024-10-12 18:36:50,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:36:50,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:50,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:50,242 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) [2024-10-12 18:36:50,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-12 18:36:50,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:36:50,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:50,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-12 18:36:50,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-12 18:36:50,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-12 18:36:50,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722387957] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:50,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:50,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2024-10-12 18:36:50,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253020368] [2024-10-12 18:36:50,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:50,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 18:36:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:50,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 18:36:50,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:36:50,507 INFO L87 Difference]: Start difference. First operand 192 states and 222 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:50,743 INFO L93 Difference]: Finished difference Result 229 states and 263 transitions. [2024-10-12 18:36:50,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 18:36:50,744 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-10-12 18:36:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:50,745 INFO L225 Difference]: With dead ends: 229 [2024-10-12 18:36:50,745 INFO L226 Difference]: Without dead ends: 215 [2024-10-12 18:36:50,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 21 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:36:50,746 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:50,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 127 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:36:50,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-10-12 18:36:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 200. [2024-10-12 18:36:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.1608040201005025) internal successors, (231), 199 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:50,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 231 transitions. [2024-10-12 18:36:50,849 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 231 transitions. Word has length 35 [2024-10-12 18:36:50,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:50,850 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 231 transitions. [2024-10-12 18:36:50,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:50,850 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 231 transitions. [2024-10-12 18:36:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-12 18:36:50,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:50,850 INFO L215 NwaCegarLoop]: trace histogram [16, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:50,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-12 18:36:51,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-10-12 18:36:51,051 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:51,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:51,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1432047742, now seen corresponding path program 29 times [2024-10-12 18:36:51,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:51,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480887714] [2024-10-12 18:36:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:51,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-12 18:36:51,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480887714] [2024-10-12 18:36:51,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480887714] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570681460] [2024-10-12 18:36:51,479 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:36:51,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:51,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:51,481 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) [2024-10-12 18:36:51,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-12 18:36:51,648 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-10-12 18:36:51,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:51,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-10-12 18:36:51,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:36:51,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-10-12 18:36:52,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570681460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:52,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:52,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 16] total 48 [2024-10-12 18:36:52,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645315634] [2024-10-12 18:36:52,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:52,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-12 18:36:52,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:52,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-12 18:36:52,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=1806, Unknown=0, NotChecked=0, Total=2256 [2024-10-12 18:36:52,264 INFO L87 Difference]: Start difference. First operand 200 states and 231 transitions. Second operand has 48 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:54,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:54,442 INFO L93 Difference]: Finished difference Result 406 states and 483 transitions. [2024-10-12 18:36:54,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-10-12 18:36:54,442 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-12 18:36:54,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:54,444 INFO L225 Difference]: With dead ends: 406 [2024-10-12 18:36:54,444 INFO L226 Difference]: Without dead ends: 386 [2024-10-12 18:36:54,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2323, Invalid=7183, Unknown=0, NotChecked=0, Total=9506 [2024-10-12 18:36:54,445 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 387 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:54,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 463 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 18:36:54,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-10-12 18:36:54,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 192. [2024-10-12 18:36:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.1518324607329844) internal successors, (220), 191 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 220 transitions. [2024-10-12 18:36:54,552 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 220 transitions. Word has length 37 [2024-10-12 18:36:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:54,552 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 220 transitions. [2024-10-12 18:36:54,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:54,553 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 220 transitions. [2024-10-12 18:36:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:36:54,553 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:54,553 INFO L215 NwaCegarLoop]: trace histogram [12, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:54,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-10-12 18:36:54,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:54,754 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:54,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:54,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1558214192, now seen corresponding path program 30 times [2024-10-12 18:36:54,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:54,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354169223] [2024-10-12 18:36:54,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:54,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:55,096 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-12 18:36:55,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:55,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354169223] [2024-10-12 18:36:55,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354169223] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:36:55,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147577877] [2024-10-12 18:36:55,097 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-12 18:36:55,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:55,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:36:55,099 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) [2024-10-12 18:36:55,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-12 18:36:55,296 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-12 18:36:55,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:36:55,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-12 18:36:55,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:36:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-12 18:36:55,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:36:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-12 18:36:56,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147577877] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:36:56,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:36:56,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 52 [2024-10-12 18:36:56,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700382105] [2024-10-12 18:36:56,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:36:56,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-10-12 18:36:56,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:36:56,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-10-12 18:36:56,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=2231, Unknown=0, NotChecked=0, Total=2652 [2024-10-12 18:36:56,084 INFO L87 Difference]: Start difference. First operand 192 states and 220 transitions. Second operand has 52 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 52 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) [2024-10-12 18:36:59,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:36:59,263 INFO L93 Difference]: Finished difference Result 356 states and 400 transitions. [2024-10-12 18:36:59,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-10-12 18:36:59,263 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 52 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-12 18:36:59,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:36:59,265 INFO L225 Difference]: With dead ends: 356 [2024-10-12 18:36:59,265 INFO L226 Difference]: Without dead ends: 328 [2024-10-12 18:36:59,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2306 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1861, Invalid=7451, Unknown=0, NotChecked=0, Total=9312 [2024-10-12 18:36:59,266 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 359 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 18:36:59,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 178 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 18:36:59,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-10-12 18:36:59,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 186. [2024-10-12 18:36:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.1513513513513514) internal successors, (213), 185 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:36:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 213 transitions. [2024-10-12 18:36:59,418 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 213 transitions. Word has length 38 [2024-10-12 18:36:59,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:36:59,418 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 213 transitions. [2024-10-12 18:36:59,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 52 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) [2024-10-12 18:36:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 213 transitions. [2024-10-12 18:36:59,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:36:59,418 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:36:59,419 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:36:59,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-10-12 18:36:59,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:36:59,619 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:36:59,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:36:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash -524046206, now seen corresponding path program 31 times [2024-10-12 18:36:59,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:36:59,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301555586] [2024-10-12 18:36:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:36:59,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:36:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:36:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 18:36:59,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:36:59,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301555586] [2024-10-12 18:36:59,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301555586] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:37:00,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583854822] [2024-10-12 18:37:00,000 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-12 18:37:00,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:37:00,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:37:00,002 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) [2024-10-12 18:37:00,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-12 18:37:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:37:00,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-12 18:37:00,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:37:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 18:37:00,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:37:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 18:37:00,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583854822] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:37:00,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:37:00,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-10-12 18:37:00,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698314518] [2024-10-12 18:37:00,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:37:00,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 18:37:00,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:37:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 18:37:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-10-12 18:37:00,396 INFO L87 Difference]: Start difference. First operand 186 states and 213 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:37:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:37:00,843 INFO L93 Difference]: Finished difference Result 301 states and 338 transitions. [2024-10-12 18:37:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 18:37:00,844 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-12 18:37:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:37:00,845 INFO L225 Difference]: With dead ends: 301 [2024-10-12 18:37:00,845 INFO L226 Difference]: Without dead ends: 286 [2024-10-12 18:37:00,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 23 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-10-12 18:37:00,846 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 18:37:00,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 139 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 18:37:00,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-10-12 18:37:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 204. [2024-10-12 18:37:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.1724137931034482) internal successors, (238), 203 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:37:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 238 transitions. [2024-10-12 18:37:00,982 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 238 transitions. Word has length 38 [2024-10-12 18:37:00,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:37:00,982 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 238 transitions. [2024-10-12 18:37:00,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:37:00,983 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 238 transitions. [2024-10-12 18:37:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-12 18:37:00,983 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:37:00,983 INFO L215 NwaCegarLoop]: trace histogram [12, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:37:00,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-10-12 18:37:01,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-12 18:37:01,184 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:37:01,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:37:01,184 INFO L85 PathProgramCache]: Analyzing trace with hash 565286018, now seen corresponding path program 32 times [2024-10-12 18:37:01,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:37:01,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756925436] [2024-10-12 18:37:01,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:37:01,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:37:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:37:01,587 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 22 proven. 110 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-12 18:37:01,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:37:01,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756925436] [2024-10-12 18:37:01,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756925436] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:37:01,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223900473] [2024-10-12 18:37:01,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:37:01,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:37:01,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:37:01,590 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) [2024-10-12 18:37:01,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-12 18:37:01,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:37:01,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:37:01,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-12 18:37:01,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:37:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 18:37:01,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:37:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 18:37:02,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223900473] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:37:02,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:37:02,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 49 [2024-10-12 18:37:02,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999636622] [2024-10-12 18:37:02,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:37:02,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-12 18:37:02,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:37:02,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-12 18:37:02,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2083, Unknown=0, NotChecked=0, Total=2450 [2024-10-12 18:37:02,487 INFO L87 Difference]: Start difference. First operand 204 states and 238 transitions. Second operand has 50 states, 50 states have (on average 1.2) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)