./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/watermelon.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/watermelon.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 dda0b992ac1600896503297d86377b482d0a82ded923ea00c7e9ff3fed4db7e7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:52:51,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:52:51,696 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:52:51,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:52:51,702 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:52:51,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:52:51,728 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:52:51,729 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:52:51,729 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:52:51,730 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:52:51,730 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:52:51,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:52:51,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:52:51,731 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:52:51,732 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:52:51,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:52:51,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:52:51,733 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:52:51,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:52:51,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:52:51,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:52:51,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:52:51,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:52:51,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:52:51,737 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:52:51,737 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:52:51,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:52:51,738 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:52:51,738 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:52:51,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:52:51,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:52:51,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:52:51,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:52:51,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:52:51,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:52:51,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:52:51,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:52:51,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:52:51,741 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:52:51,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:52:51,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:52:51,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:52:51,742 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda0b992ac1600896503297d86377b482d0a82ded923ea00c7e9ff3fed4db7e7 [2024-11-16 06:52:51,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:52:51,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:52:51,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:52:51,991 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:52:51,993 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:52:51,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/watermelon.c [2024-11-16 06:52:53,429 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:52:53,586 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:52:53,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/watermelon.c [2024-11-16 06:52:53,595 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4ec2dac8/5826d2500b5b4718a1f34b8af2009409/FLAGa6777013c [2024-11-16 06:52:53,989 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4ec2dac8/5826d2500b5b4718a1f34b8af2009409 [2024-11-16 06:52:53,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:52:53,993 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:52:53,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:52:53,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:52:54,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:52:54,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:52:53" (1/1) ... [2024-11-16 06:52:54,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d452972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54, skipping insertion in model container [2024-11-16 06:52:54,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:52:53" (1/1) ... [2024-11-16 06:52:54,025 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:52:54,188 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/watermelon.c[373,386] [2024-11-16 06:52:54,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:52:54,211 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:52:54,222 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/watermelon.c[373,386] [2024-11-16 06:52:54,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:52:54,244 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:52:54,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54 WrapperNode [2024-11-16 06:52:54,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:52:54,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:52:54,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:52:54,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:52:54,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (1/1) ... [2024-11-16 06:52:54,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (1/1) ... [2024-11-16 06:52:54,277 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2024-11-16 06:52:54,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:52:54,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:52:54,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:52:54,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:52:54,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (1/1) ... [2024-11-16 06:52:54,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (1/1) ... [2024-11-16 06:52:54,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (1/1) ... [2024-11-16 06:52:54,308 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 06:52:54,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (1/1) ... [2024-11-16 06:52:54,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (1/1) ... [2024-11-16 06:52:54,314 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (1/1) ... [2024-11-16 06:52:54,315 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (1/1) ... [2024-11-16 06:52:54,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (1/1) ... [2024-11-16 06:52:54,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (1/1) ... [2024-11-16 06:52:54,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:52:54,323 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:52:54,327 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:52:54,327 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:52:54,328 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (1/1) ... [2024-11-16 06:52:54,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:52:54,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:54,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 06:52:54,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 06:52:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:52:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:52:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:52:54,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:52:54,472 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:52:54,475 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:52:54,611 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-16 06:52:54,612 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:52:54,626 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:52:54,627 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:52:54,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:52:54 BoogieIcfgContainer [2024-11-16 06:52:54,628 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:52:54,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:52:54,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:52:54,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:52:54,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:52:53" (1/3) ... [2024-11-16 06:52:54,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe5acfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:52:54, skipping insertion in model container [2024-11-16 06:52:54,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:52:54" (2/3) ... [2024-11-16 06:52:54,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe5acfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:52:54, skipping insertion in model container [2024-11-16 06:52:54,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:52:54" (3/3) ... [2024-11-16 06:52:54,639 INFO L112 eAbstractionObserver]: Analyzing ICFG watermelon.c [2024-11-16 06:52:54,653 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:52:54,654 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:52:54,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:52:54,710 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;@4b9abc0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:52:54,711 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:52:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:54,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-16 06:52:54,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:54,736 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:54,736 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:54,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:54,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1328489777, now seen corresponding path program 1 times [2024-11-16 06:52:54,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:54,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576952154] [2024-11-16 06:52:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:54,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:55,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:55,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:55,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576952154] [2024-11-16 06:52:55,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576952154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:55,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:55,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 06:52:55,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739407039] [2024-11-16 06:52:55,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:55,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 06:52:55,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:55,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 06:52:55,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 06:52:55,329 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:55,460 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions. [2024-11-16 06:52:55,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:52:55,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-16 06:52:55,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:55,470 INFO L225 Difference]: With dead ends: 61 [2024-11-16 06:52:55,470 INFO L226 Difference]: Without dead ends: 31 [2024-11-16 06:52:55,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:52:55,477 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:55,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 160 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:52:55,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-16 06:52:55,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2024-11-16 06:52:55,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-16 06:52:55,513 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 12 [2024-11-16 06:52:55,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:55,513 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-16 06:52:55,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,514 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-16 06:52:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 06:52:55,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:55,515 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:55,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:52:55,516 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:55,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:55,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1710242676, now seen corresponding path program 1 times [2024-11-16 06:52:55,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:55,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479271871] [2024-11-16 06:52:55,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:55,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:55,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479271871] [2024-11-16 06:52:55,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479271871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:55,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:55,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:52:55,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615471301] [2024-11-16 06:52:55,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:55,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:52:55,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:55,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:52:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:52:55,599 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:55,619 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2024-11-16 06:52:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:52:55,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-16 06:52:55,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:55,620 INFO L225 Difference]: With dead ends: 52 [2024-11-16 06:52:55,621 INFO L226 Difference]: Without dead ends: 30 [2024-11-16 06:52:55,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:52:55,622 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:55,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-16 06:52:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-16 06:52:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-16 06:52:55,628 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 16 [2024-11-16 06:52:55,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:55,628 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-16 06:52:55,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,628 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-16 06:52:55,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 06:52:55,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:55,629 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:55,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:52:55,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:55,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:55,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2012869942, now seen corresponding path program 1 times [2024-11-16 06:52:55,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:55,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89944156] [2024-11-16 06:52:55,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:55,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:55,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:55,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89944156] [2024-11-16 06:52:55,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89944156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:55,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:55,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:52:55,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46366262] [2024-11-16 06:52:55,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:55,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:52:55,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:55,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:52:55,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:52:55,683 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:55,706 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2024-11-16 06:52:55,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:52:55,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-16 06:52:55,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:55,707 INFO L225 Difference]: With dead ends: 43 [2024-11-16 06:52:55,707 INFO L226 Difference]: Without dead ends: 34 [2024-11-16 06:52:55,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:52:55,709 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:55,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:55,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-16 06:52:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-16 06:52:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-16 06:52:55,714 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 16 [2024-11-16 06:52:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:55,714 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-16 06:52:55,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-16 06:52:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 06:52:55,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:55,717 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:55,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 06:52:55,717 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:55,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:55,718 INFO L85 PathProgramCache]: Analyzing trace with hash -357950029, now seen corresponding path program 1 times [2024-11-16 06:52:55,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:55,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554655648] [2024-11-16 06:52:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:55,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:55,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:55,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554655648] [2024-11-16 06:52:55,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554655648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:55,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666947630] [2024-11-16 06:52:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:55,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:55,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:55,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:55,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:52:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:55,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 06:52:55,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:55,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:55,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666947630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:55,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:55,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-16 06:52:55,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284996435] [2024-11-16 06:52:55,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:55,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 06:52:55,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:55,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 06:52:55,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-16 06:52:55,965 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:56,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:56,007 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2024-11-16 06:52:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:52:56,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-16 06:52:56,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:56,009 INFO L225 Difference]: With dead ends: 62 [2024-11-16 06:52:56,009 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 06:52:56,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-11-16 06:52:56,011 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 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 [2024-11-16 06:52:56,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:56,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 06:52:56,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-16 06:52:56,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:56,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-16 06:52:56,018 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 18 [2024-11-16 06:52:56,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:56,018 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-16 06:52:56,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:56,019 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-16 06:52:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 06:52:56,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:56,019 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:56,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:52:56,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:56,221 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:56,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:56,222 INFO L85 PathProgramCache]: Analyzing trace with hash -423472085, now seen corresponding path program 1 times [2024-11-16 06:52:56,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:56,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105484218] [2024-11-16 06:52:56,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:56,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:56,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105484218] [2024-11-16 06:52:56,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105484218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:56,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479573118] [2024-11-16 06:52:56,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:56,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:56,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:56,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:56,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:52:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:56,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:52:56,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:52:56,577 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:52:56,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479573118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:56,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:52:56,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-16 06:52:56,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318408537] [2024-11-16 06:52:56,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:56,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:52:56,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:56,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:52:56,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:52:56,579 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:56,626 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2024-11-16 06:52:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:52:56,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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 18 [2024-11-16 06:52:56,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:56,628 INFO L225 Difference]: With dead ends: 51 [2024-11-16 06:52:56,628 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 06:52:56,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:52:56,629 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:56,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 64 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 06:52:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-16 06:52:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-16 06:52:56,640 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 18 [2024-11-16 06:52:56,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:56,641 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-16 06:52:56,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-16 06:52:56,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 06:52:56,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:56,642 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:56,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 06:52:56,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:56,843 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:56,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:56,843 INFO L85 PathProgramCache]: Analyzing trace with hash 678718514, now seen corresponding path program 2 times [2024-11-16 06:52:56,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:56,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597672652] [2024-11-16 06:52:56,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:56,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:52:57,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:57,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597672652] [2024-11-16 06:52:57,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597672652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:57,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:57,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 06:52:57,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958735682] [2024-11-16 06:52:57,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:57,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 06:52:57,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:57,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 06:52:57,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:52:57,056 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:57,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:57,091 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-11-16 06:52:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:52:57,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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 20 [2024-11-16 06:52:57,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:57,092 INFO L225 Difference]: With dead ends: 42 [2024-11-16 06:52:57,092 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 06:52:57,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:52:57,093 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:57,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 42 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:57,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 06:52:57,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-16 06:52:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:57,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-11-16 06:52:57,098 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2024-11-16 06:52:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:57,098 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-11-16 06:52:57,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-11-16 06:52:57,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 06:52:57,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:57,099 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:57,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 06:52:57,100 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:57,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:57,100 INFO L85 PathProgramCache]: Analyzing trace with hash -752078481, now seen corresponding path program 1 times [2024-11-16 06:52:57,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:57,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927602753] [2024-11-16 06:52:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:57,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 06:52:57,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:57,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927602753] [2024-11-16 06:52:57,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927602753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:57,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040979444] [2024-11-16 06:52:57,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:57,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:57,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:57,191 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:57,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:52:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:57,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 06:52:57,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:52:57,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:52:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040979444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:57,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:57,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2024-11-16 06:52:57,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43090490] [2024-11-16 06:52:57,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:57,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:52:57,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:57,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:52:57,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:52:57,296 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:57,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:57,335 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2024-11-16 06:52:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:52:57,336 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-16 06:52:57,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:57,336 INFO L225 Difference]: With dead ends: 60 [2024-11-16 06:52:57,336 INFO L226 Difference]: Without dead ends: 43 [2024-11-16 06:52:57,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:52:57,337 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:57,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-16 06:52:57,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-16 06:52:57,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2024-11-16 06:52:57,342 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 26 [2024-11-16 06:52:57,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:57,342 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2024-11-16 06:52:57,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:57,343 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2024-11-16 06:52:57,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 06:52:57,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:57,343 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:57,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 06:52:57,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:57,547 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:57,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:57,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1868231570, now seen corresponding path program 1 times [2024-11-16 06:52:57,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:57,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512552542] [2024-11-16 06:52:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:57,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:52:57,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:57,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512552542] [2024-11-16 06:52:57,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512552542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:57,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099793837] [2024-11-16 06:52:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:57,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:57,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:57,628 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:57,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 06:52:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:57,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:52:57,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:52:57,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:52:57,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099793837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:57,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:57,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-16 06:52:57,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336512231] [2024-11-16 06:52:57,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:57,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 06:52:57,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:57,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 06:52:57,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:52:57,804 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:57,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:57,846 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2024-11-16 06:52:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:52:57,846 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-16 06:52:57,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:57,848 INFO L225 Difference]: With dead ends: 56 [2024-11-16 06:52:57,848 INFO L226 Difference]: Without dead ends: 49 [2024-11-16 06:52:57,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:52:57,849 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 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 [2024-11-16 06:52:57,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:57,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-16 06:52:57,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-11-16 06:52:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2024-11-16 06:52:57,855 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 28 [2024-11-16 06:52:57,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:57,855 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2024-11-16 06:52:57,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2024-11-16 06:52:57,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 06:52:57,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:57,856 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:57,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 06:52:58,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:58,057 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:58,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:58,057 INFO L85 PathProgramCache]: Analyzing trace with hash -980727889, now seen corresponding path program 1 times [2024-11-16 06:52:58,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:58,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771964211] [2024-11-16 06:52:58,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:58,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 06:52:58,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:58,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771964211] [2024-11-16 06:52:58,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771964211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:52:58,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:52:58,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 06:52:58,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115599878] [2024-11-16 06:52:58,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:52:58,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 06:52:58,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:58,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 06:52:58,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:52:58,151 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:58,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:58,178 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2024-11-16 06:52:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 06:52:58,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 28 [2024-11-16 06:52:58,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:58,179 INFO L225 Difference]: With dead ends: 53 [2024-11-16 06:52:58,179 INFO L226 Difference]: Without dead ends: 45 [2024-11-16 06:52:58,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:52:58,181 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:58,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:52:58,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-16 06:52:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-16 06:52:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 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) [2024-11-16 06:52:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-11-16 06:52:58,194 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 28 [2024-11-16 06:52:58,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:58,194 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-11-16 06:52:58,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:58,194 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-11-16 06:52:58,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 06:52:58,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:58,195 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:58,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 06:52:58,195 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:58,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1559908209, now seen corresponding path program 2 times [2024-11-16 06:52:58,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:58,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805610902] [2024-11-16 06:52:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:58,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:58,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:58,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805610902] [2024-11-16 06:52:58,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805610902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:58,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989438537] [2024-11-16 06:52:58,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:52:58,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:58,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:58,473 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:58,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 06:52:58,523 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:52:58,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:58,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 06:52:58,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:52:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:58,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:52:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:59,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989438537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:52:59,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:52:59,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2024-11-16 06:52:59,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663472010] [2024-11-16 06:52:59,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:52:59,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 06:52:59,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:52:59,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 06:52:59,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-11-16 06:52:59,103 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:59,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:52:59,229 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2024-11-16 06:52:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 06:52:59,230 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-16 06:52:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:52:59,231 INFO L225 Difference]: With dead ends: 65 [2024-11-16 06:52:59,231 INFO L226 Difference]: Without dead ends: 44 [2024-11-16 06:52:59,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2024-11-16 06:52:59,232 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:52:59,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 130 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:52:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-16 06:52:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-16 06:52:59,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:59,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2024-11-16 06:52:59,239 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 30 [2024-11-16 06:52:59,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:52:59,239 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2024-11-16 06:52:59,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:52:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2024-11-16 06:52:59,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 06:52:59,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:52:59,243 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:52:59,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 06:52:59,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 06:52:59,447 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:52:59,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:52:59,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1775312561, now seen corresponding path program 2 times [2024-11-16 06:52:59,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:52:59,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581544017] [2024-11-16 06:52:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:52:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:52:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:52:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:52:59,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:52:59,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581544017] [2024-11-16 06:52:59,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581544017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:52:59,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638668356] [2024-11-16 06:52:59,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:52:59,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:52:59,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:52:59,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:52:59,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 06:52:59,765 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:52:59,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:52:59,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 06:52:59,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:00,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:00,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638668356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:00,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:00,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2024-11-16 06:53:00,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128424783] [2024-11-16 06:53:00,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:00,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 06:53:00,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:00,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 06:53:00,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2024-11-16 06:53:00,303 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:00,419 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2024-11-16 06:53:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 06:53:00,420 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-16 06:53:00,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:00,420 INFO L225 Difference]: With dead ends: 54 [2024-11-16 06:53:00,420 INFO L226 Difference]: Without dead ends: 46 [2024-11-16 06:53:00,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2024-11-16 06:53:00,421 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:00,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 150 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-16 06:53:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-16 06:53:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 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) [2024-11-16 06:53:00,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-11-16 06:53:00,427 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 30 [2024-11-16 06:53:00,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:00,427 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-11-16 06:53:00,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 24 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-11-16 06:53:00,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-16 06:53:00,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:00,428 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:00,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 06:53:00,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:00,629 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:00,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash 235904368, now seen corresponding path program 3 times [2024-11-16 06:53:00,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:00,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289296529] [2024-11-16 06:53:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:00,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:01,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289296529] [2024-11-16 06:53:01,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289296529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116699146] [2024-11-16 06:53:01,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:01,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:01,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:01,025 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:01,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 06:53:01,077 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 06:53:01,077 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:01,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 06:53:01,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:01,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:01,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116699146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:01,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:01,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2024-11-16 06:53:01,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837377001] [2024-11-16 06:53:01,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:01,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 06:53:01,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:01,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 06:53:01,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2024-11-16 06:53:01,843 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:02,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:02,027 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2024-11-16 06:53:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 06:53:02,027 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 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 32 [2024-11-16 06:53:02,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:02,028 INFO L225 Difference]: With dead ends: 72 [2024-11-16 06:53:02,028 INFO L226 Difference]: Without dead ends: 49 [2024-11-16 06:53:02,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=857, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 06:53:02,029 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:02,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 126 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:02,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-16 06:53:02,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-16 06:53:02,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:02,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2024-11-16 06:53:02,034 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 32 [2024-11-16 06:53:02,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:02,035 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2024-11-16 06:53:02,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:02,035 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2024-11-16 06:53:02,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-16 06:53:02,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:02,036 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:02,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:02,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:02,240 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:02,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1060423538, now seen corresponding path program 3 times [2024-11-16 06:53:02,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:02,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982111171] [2024-11-16 06:53:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:02,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:02,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:02,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982111171] [2024-11-16 06:53:02,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982111171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:02,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668726673] [2024-11-16 06:53:02,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:02,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:02,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:02,552 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:02,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 06:53:02,596 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 06:53:02,596 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:02,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 06:53:02,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:03,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:03,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668726673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:03,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:03,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2024-11-16 06:53:03,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313956539] [2024-11-16 06:53:03,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:03,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 06:53:03,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:03,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 06:53:03,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:53:03,297 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:03,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:03,466 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2024-11-16 06:53:03,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 06:53:03,467 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 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 32 [2024-11-16 06:53:03,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:03,468 INFO L225 Difference]: With dead ends: 62 [2024-11-16 06:53:03,468 INFO L226 Difference]: Without dead ends: 54 [2024-11-16 06:53:03,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2024-11-16 06:53:03,469 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:03,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 183 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-16 06:53:03,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-16 06:53:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2024-11-16 06:53:03,481 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 32 [2024-11-16 06:53:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:03,482 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2024-11-16 06:53:03,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2024-11-16 06:53:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 06:53:03,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:03,483 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:03,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 06:53:03,683 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,SelfDestructingSolverStorable12 [2024-11-16 06:53:03,684 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:03,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:03,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1649497263, now seen corresponding path program 4 times [2024-11-16 06:53:03,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:03,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411507225] [2024-11-16 06:53:03,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:03,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:03,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:03,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411507225] [2024-11-16 06:53:03,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411507225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:03,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339284575] [2024-11-16 06:53:03,980 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:03,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:03,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:03,982 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:03,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 06:53:04,041 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:04,041 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:04,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 06:53:04,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:04,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:04,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339284575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:04,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:04,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 29 [2024-11-16 06:53:04,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847283251] [2024-11-16 06:53:04,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:04,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 06:53:04,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:04,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 06:53:04,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2024-11-16 06:53:04,648 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:04,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:04,764 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2024-11-16 06:53:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 06:53:04,765 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 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 34 [2024-11-16 06:53:04,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:04,765 INFO L225 Difference]: With dead ends: 73 [2024-11-16 06:53:04,765 INFO L226 Difference]: Without dead ends: 50 [2024-11-16 06:53:04,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:53:04,766 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:04,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 177 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:04,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-16 06:53:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-16 06:53:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2024-11-16 06:53:04,771 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 34 [2024-11-16 06:53:04,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:04,771 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2024-11-16 06:53:04,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2024-11-16 06:53:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 06:53:04,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:04,772 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:04,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 06:53:04,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 06:53:04,976 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:04,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:04,977 INFO L85 PathProgramCache]: Analyzing trace with hash -795663953, now seen corresponding path program 4 times [2024-11-16 06:53:04,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:04,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954130756] [2024-11-16 06:53:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:04,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:05,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:05,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954130756] [2024-11-16 06:53:05,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954130756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:05,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652984576] [2024-11-16 06:53:05,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:05,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:05,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:05,280 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:05,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 06:53:05,330 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:05,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:05,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 06:53:05,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:05,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:05,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652984576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:05,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:05,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 29 [2024-11-16 06:53:05,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048935782] [2024-11-16 06:53:05,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:05,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 06:53:05,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 06:53:05,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2024-11-16 06:53:05,932 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:06,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:06,036 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2024-11-16 06:53:06,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 06:53:06,037 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-16 06:53:06,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:06,037 INFO L225 Difference]: With dead ends: 60 [2024-11-16 06:53:06,037 INFO L226 Difference]: Without dead ends: 52 [2024-11-16 06:53:06,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=681, Unknown=0, NotChecked=0, Total=870 [2024-11-16 06:53:06,038 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:06,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 154 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-16 06:53:06,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-16 06:53:06,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:06,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2024-11-16 06:53:06,045 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 34 [2024-11-16 06:53:06,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:06,045 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2024-11-16 06:53:06,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:06,045 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2024-11-16 06:53:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 06:53:06,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:06,046 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:06,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 06:53:06,246 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,SelfDestructingSolverStorable14 [2024-11-16 06:53:06,246 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:06,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1080378832, now seen corresponding path program 5 times [2024-11-16 06:53:06,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:06,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769645577] [2024-11-16 06:53:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:06,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:06,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:06,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769645577] [2024-11-16 06:53:06,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769645577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:06,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127218170] [2024-11-16 06:53:06,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:06,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:06,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:06,626 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:06,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 06:53:06,678 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-16 06:53:06,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:06,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 06:53:06,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:07,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:07,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127218170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:07,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:07,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2024-11-16 06:53:07,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051099891] [2024-11-16 06:53:07,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:07,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-16 06:53:07,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:07,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-16 06:53:07,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1027, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 06:53:07,378 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 36 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:07,559 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2024-11-16 06:53:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 06:53:07,560 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 36 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-16 06:53:07,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:07,560 INFO L225 Difference]: With dead ends: 80 [2024-11-16 06:53:07,560 INFO L226 Difference]: Without dead ends: 55 [2024-11-16 06:53:07,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=1149, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 06:53:07,561 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:07,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 164 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:07,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-16 06:53:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-16 06:53:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2024-11-16 06:53:07,566 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 36 [2024-11-16 06:53:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:07,567 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2024-11-16 06:53:07,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 36 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2024-11-16 06:53:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 06:53:07,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:07,567 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:07,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 06:53:07,771 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,SelfDestructingSolverStorable15 [2024-11-16 06:53:07,771 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:07,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1845181138, now seen corresponding path program 5 times [2024-11-16 06:53:07,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:07,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361789382] [2024-11-16 06:53:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:07,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:08,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:08,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361789382] [2024-11-16 06:53:08,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361789382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:08,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815175370] [2024-11-16 06:53:08,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:08,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:08,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:08,111 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:08,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 06:53:08,165 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-16 06:53:08,166 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:08,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 06:53:08,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:08,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:08,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815175370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:08,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:08,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2024-11-16 06:53:08,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080863374] [2024-11-16 06:53:08,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:08,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 06:53:08,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:08,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 06:53:08,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=962, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:53:08,872 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:08,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:08,998 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2024-11-16 06:53:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 06:53:08,999 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-16 06:53:08,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:09,000 INFO L225 Difference]: With dead ends: 68 [2024-11-16 06:53:09,000 INFO L226 Difference]: Without dead ends: 60 [2024-11-16 06:53:09,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 06:53:09,001 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:09,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 158 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-16 06:53:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2024-11-16 06:53:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2024-11-16 06:53:09,008 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 36 [2024-11-16 06:53:09,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:09,009 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2024-11-16 06:53:09,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 35 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:09,010 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2024-11-16 06:53:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 06:53:09,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:09,010 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:09,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:09,215 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,SelfDestructingSolverStorable16 [2024-11-16 06:53:09,216 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:09,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:09,216 INFO L85 PathProgramCache]: Analyzing trace with hash -883279537, now seen corresponding path program 6 times [2024-11-16 06:53:09,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:09,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328547832] [2024-11-16 06:53:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:09,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:09,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:09,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328547832] [2024-11-16 06:53:09,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328547832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:09,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776549902] [2024-11-16 06:53:09,550 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:09,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:09,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:09,552 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:09,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 06:53:09,600 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-16 06:53:09,600 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:09,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 06:53:09,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:09,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:10,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776549902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:10,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:10,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-16 06:53:10,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421869613] [2024-11-16 06:53:10,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:10,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-16 06:53:10,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:10,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-16 06:53:10,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 06:53:10,219 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:10,354 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2024-11-16 06:53:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 06:53:10,355 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-16 06:53:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:10,355 INFO L225 Difference]: With dead ends: 81 [2024-11-16 06:53:10,355 INFO L226 Difference]: Without dead ends: 56 [2024-11-16 06:53:10,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:53:10,356 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:10,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 197 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:10,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-16 06:53:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-16 06:53:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 55 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:10,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2024-11-16 06:53:10,362 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 38 [2024-11-16 06:53:10,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:10,362 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2024-11-16 06:53:10,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:10,362 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2024-11-16 06:53:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 06:53:10,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:10,363 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:10,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 06:53:10,563 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,SelfDestructingSolverStorable17 [2024-11-16 06:53:10,563 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:10,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:10,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1358860943, now seen corresponding path program 6 times [2024-11-16 06:53:10,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:10,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195737593] [2024-11-16 06:53:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:10,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:10,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195737593] [2024-11-16 06:53:10,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195737593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:10,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205661259] [2024-11-16 06:53:10,882 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:10,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:10,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:10,884 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:10,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 06:53:10,932 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-16 06:53:10,932 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:10,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 06:53:10,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:11,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:11,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205661259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:11,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:11,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-16 06:53:11,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098675661] [2024-11-16 06:53:11,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:11,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-16 06:53:11,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-16 06:53:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 06:53:11,485 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 34 states, 34 states have (on average 2.323529411764706) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:11,600 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2024-11-16 06:53:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 06:53:11,600 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.323529411764706) internal successors, (79), 34 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) Word has length 38 [2024-11-16 06:53:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:11,600 INFO L225 Difference]: With dead ends: 66 [2024-11-16 06:53:11,600 INFO L226 Difference]: Without dead ends: 58 [2024-11-16 06:53:11,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:53:11,601 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:11,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 156 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-16 06:53:11,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-16 06:53:11,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 57 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2024-11-16 06:53:11,606 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 38 [2024-11-16 06:53:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:11,606 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2024-11-16 06:53:11,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.323529411764706) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2024-11-16 06:53:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 06:53:11,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:11,607 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:11,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:11,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:11,807 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:11,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:11,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1404567216, now seen corresponding path program 7 times [2024-11-16 06:53:11,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:11,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31892955] [2024-11-16 06:53:11,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:11,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:12,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:12,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31892955] [2024-11-16 06:53:12,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31892955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:12,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895757012] [2024-11-16 06:53:12,182 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:12,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:12,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:12,183 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:12,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 06:53:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:12,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 06:53:12,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:12,677 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:12,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:12,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895757012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:12,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:12,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2024-11-16 06:53:12,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583852539] [2024-11-16 06:53:12,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:12,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 06:53:12,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:13,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 06:53:13,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 06:53:13,001 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 41 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:13,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:13,238 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2024-11-16 06:53:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 06:53:13,239 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 41 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 06:53:13,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:13,240 INFO L225 Difference]: With dead ends: 88 [2024-11-16 06:53:13,240 INFO L226 Difference]: Without dead ends: 61 [2024-11-16 06:53:13,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 06:53:13,241 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:13,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 298 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:13,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-16 06:53:13,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-16 06:53:13,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2024-11-16 06:53:13,252 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 40 [2024-11-16 06:53:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:13,253 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2024-11-16 06:53:13,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 41 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:13,253 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2024-11-16 06:53:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 06:53:13,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:13,253 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:13,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-16 06:53:13,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:13,454 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:13,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash 450056782, now seen corresponding path program 7 times [2024-11-16 06:53:13,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:13,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903017836] [2024-11-16 06:53:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:13,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:13,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:13,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903017836] [2024-11-16 06:53:13,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903017836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:13,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579700572] [2024-11-16 06:53:13,798 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:13,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:13,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:13,800 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:13,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 06:53:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:13,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 06:53:13,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:14,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:14,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579700572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:14,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:14,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2024-11-16 06:53:14,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769100946] [2024-11-16 06:53:14,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:14,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-16 06:53:14,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:14,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-16 06:53:14,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1265, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 06:53:14,473 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 40 states, 40 states have (on average 2.175) internal successors, (87), 40 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:14,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:14,577 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2024-11-16 06:53:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 06:53:14,577 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 40 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 06:53:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:14,578 INFO L225 Difference]: With dead ends: 74 [2024-11-16 06:53:14,578 INFO L226 Difference]: Without dead ends: 66 [2024-11-16 06:53:14,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=318, Invalid=1322, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 06:53:14,579 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:14,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 179 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-16 06:53:14,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2024-11-16 06:53:14,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2024-11-16 06:53:14,583 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 40 [2024-11-16 06:53:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:14,583 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2024-11-16 06:53:14,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 40 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2024-11-16 06:53:14,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 06:53:14,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:14,583 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:14,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-16 06:53:14,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:14,784 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:14,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:14,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1522138735, now seen corresponding path program 8 times [2024-11-16 06:53:14,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:14,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156351563] [2024-11-16 06:53:14,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:14,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 32 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:15,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:15,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156351563] [2024-11-16 06:53:15,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156351563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:15,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408697441] [2024-11-16 06:53:15,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:53:15,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:15,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:15,101 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:15,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 06:53:15,147 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:53:15,147 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:15,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 06:53:15,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:15,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:15,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408697441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:15,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:15,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 39 [2024-11-16 06:53:15,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471550635] [2024-11-16 06:53:15,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:15,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 06:53:15,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:15,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 06:53:15,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1189, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 06:53:15,760 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:15,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:15,857 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2024-11-16 06:53:15,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 06:53:15,858 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-16 06:53:15,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:15,858 INFO L225 Difference]: With dead ends: 89 [2024-11-16 06:53:15,858 INFO L226 Difference]: Without dead ends: 62 [2024-11-16 06:53:15,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=308, Invalid=1252, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 06:53:15,859 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:15,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 163 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:15,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-16 06:53:15,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-16 06:53:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 61 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2024-11-16 06:53:15,872 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 42 [2024-11-16 06:53:15,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:15,872 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2024-11-16 06:53:15,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:15,872 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2024-11-16 06:53:15,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 06:53:15,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:15,873 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:15,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:16,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:16,073 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:16,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:16,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1454451729, now seen corresponding path program 8 times [2024-11-16 06:53:16,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:16,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220914334] [2024-11-16 06:53:16,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:16,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:16,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:16,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220914334] [2024-11-16 06:53:16,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220914334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:16,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035445528] [2024-11-16 06:53:16,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:53:16,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:16,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:16,467 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:16,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 06:53:16,524 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:53:16,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:16,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 06:53:16,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:16,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:17,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035445528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:17,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:17,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 39 [2024-11-16 06:53:17,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759718130] [2024-11-16 06:53:17,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:17,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 06:53:17,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:17,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 06:53:17,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1184, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 06:53:17,138 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 39 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:17,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:17,228 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2024-11-16 06:53:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 06:53:17,229 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 39 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-16 06:53:17,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:17,229 INFO L225 Difference]: With dead ends: 72 [2024-11-16 06:53:17,229 INFO L226 Difference]: Without dead ends: 64 [2024-11-16 06:53:17,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=322, Invalid=1238, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 06:53:17,230 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:17,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 144 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:17,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-16 06:53:17,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-16 06:53:17,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 63 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:17,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2024-11-16 06:53:17,235 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 42 [2024-11-16 06:53:17,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:17,235 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2024-11-16 06:53:17,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 39 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:17,236 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2024-11-16 06:53:17,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 06:53:17,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:17,236 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:17,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:17,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:17,437 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:17,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash -654481392, now seen corresponding path program 9 times [2024-11-16 06:53:17,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:17,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592308713] [2024-11-16 06:53:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:17,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:17,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592308713] [2024-11-16 06:53:17,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592308713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:17,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880511093] [2024-11-16 06:53:17,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:17,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:17,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:17,866 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:17,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 06:53:17,914 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-16 06:53:17,915 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:17,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-16 06:53:17,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:18,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:18,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880511093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:18,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:18,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 46 [2024-11-16 06:53:18,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850708168] [2024-11-16 06:53:18,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:18,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-16 06:53:18,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:18,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-16 06:53:18,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1696, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 06:53:18,722 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 46 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:18,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:18,906 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2024-11-16 06:53:18,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 06:53:18,906 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 46 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-16 06:53:18,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:18,906 INFO L225 Difference]: With dead ends: 96 [2024-11-16 06:53:18,906 INFO L226 Difference]: Without dead ends: 67 [2024-11-16 06:53:18,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=400, Invalid=1856, Unknown=0, NotChecked=0, Total=2256 [2024-11-16 06:53:18,907 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:18,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 262 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-16 06:53:18,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-16 06:53:18,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:18,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2024-11-16 06:53:18,912 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 44 [2024-11-16 06:53:18,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:18,912 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2024-11-16 06:53:18,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 46 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:18,912 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2024-11-16 06:53:18,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 06:53:18,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:18,912 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:18,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-16 06:53:19,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:19,113 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:19,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1510965266, now seen corresponding path program 9 times [2024-11-16 06:53:19,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:19,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117267269] [2024-11-16 06:53:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:19,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:19,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:19,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117267269] [2024-11-16 06:53:19,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117267269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:19,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004946846] [2024-11-16 06:53:19,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:19,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:19,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:19,554 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:19,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 06:53:19,603 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-16 06:53:19,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:19,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-16 06:53:19,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:20,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:20,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004946846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:20,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:20,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 45 [2024-11-16 06:53:20,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209188022] [2024-11-16 06:53:20,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:20,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-16 06:53:20,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:20,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-16 06:53:20,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1609, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 06:53:20,443 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 45 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:20,554 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2024-11-16 06:53:20,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 06:53:20,555 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 45 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-16 06:53:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:20,555 INFO L225 Difference]: With dead ends: 80 [2024-11-16 06:53:20,555 INFO L226 Difference]: Without dead ends: 72 [2024-11-16 06:53:20,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=397, Invalid=1673, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 06:53:20,557 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:20,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 169 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-16 06:53:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2024-11-16 06:53:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-16 06:53:20,563 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 44 [2024-11-16 06:53:20,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:20,563 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-16 06:53:20,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 45 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:20,563 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-16 06:53:20,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 06:53:20,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:20,564 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:20,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-16 06:53:20,764 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,SelfDestructingSolverStorable24 [2024-11-16 06:53:20,764 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:20,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:20,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1824373745, now seen corresponding path program 10 times [2024-11-16 06:53:20,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:20,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626605141] [2024-11-16 06:53:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:20,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 44 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:21,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:21,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626605141] [2024-11-16 06:53:21,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626605141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:21,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910815439] [2024-11-16 06:53:21,113 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:21,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:21,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:21,114 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:21,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 06:53:21,163 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:21,163 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:21,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 06:53:21,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:21,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:21,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910815439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:21,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:21,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 44 [2024-11-16 06:53:21,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418384850] [2024-11-16 06:53:21,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:21,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 06:53:21,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:21,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 06:53:21,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1523, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 06:53:21,873 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 44 states, 44 states have (on average 2.2045454545454546) internal successors, (97), 44 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:21,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:21,976 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2024-11-16 06:53:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 06:53:21,977 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.2045454545454546) internal successors, (97), 44 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-16 06:53:21,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:21,977 INFO L225 Difference]: With dead ends: 97 [2024-11-16 06:53:21,977 INFO L226 Difference]: Without dead ends: 68 [2024-11-16 06:53:21,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=385, Invalid=1595, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 06:53:21,978 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:21,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 163 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:21,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-16 06:53:21,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-16 06:53:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 67 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:21,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2024-11-16 06:53:21,984 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 46 [2024-11-16 06:53:21,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:21,984 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2024-11-16 06:53:21,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.2045454545454546) internal successors, (97), 44 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:21,985 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2024-11-16 06:53:21,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 06:53:21,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:21,985 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:21,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:22,186 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,SelfDestructingSolverStorable25 [2024-11-16 06:53:22,186 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:22,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:22,186 INFO L85 PathProgramCache]: Analyzing trace with hash 815367631, now seen corresponding path program 10 times [2024-11-16 06:53:22,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:22,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040035472] [2024-11-16 06:53:22,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:22,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:22,631 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 30 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:22,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:22,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040035472] [2024-11-16 06:53:22,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040035472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:22,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703394029] [2024-11-16 06:53:22,631 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:22,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:22,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:22,632 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:22,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-16 06:53:22,682 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:22,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:22,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 06:53:22,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 42 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:23,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:23,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703394029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:23,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:23,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 44 [2024-11-16 06:53:23,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591599464] [2024-11-16 06:53:23,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:23,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 06:53:23,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:23,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 06:53:23,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=1517, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 06:53:23,393 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:23,479 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2024-11-16 06:53:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 06:53:23,480 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-16 06:53:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:23,480 INFO L225 Difference]: With dead ends: 78 [2024-11-16 06:53:23,480 INFO L226 Difference]: Without dead ends: 70 [2024-11-16 06:53:23,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=402, Invalid=1578, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 06:53:23,481 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:23,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 144 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:23,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-16 06:53:23,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-16 06:53:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 69 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2024-11-16 06:53:23,491 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 46 [2024-11-16 06:53:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:23,491 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2024-11-16 06:53:23,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2024-11-16 06:53:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 06:53:23,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:23,493 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:23,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-16 06:53:23,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-16 06:53:23,693 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:23,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1201462800, now seen corresponding path program 11 times [2024-11-16 06:53:23,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:23,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885351868] [2024-11-16 06:53:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:23,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 42 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:24,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:24,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885351868] [2024-11-16 06:53:24,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885351868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:24,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256176171] [2024-11-16 06:53:24,114 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:24,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:24,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:24,115 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:24,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-16 06:53:24,169 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-16 06:53:24,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:24,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 06:53:24,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:24,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:25,161 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:25,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256176171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:25,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:25,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 51 [2024-11-16 06:53:25,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497107259] [2024-11-16 06:53:25,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:25,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-16 06:53:25,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:25,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-16 06:53:25,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2092, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 06:53:25,163 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 51 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:25,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:25,412 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2024-11-16 06:53:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 06:53:25,413 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 51 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-16 06:53:25,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:25,413 INFO L225 Difference]: With dead ends: 104 [2024-11-16 06:53:25,413 INFO L226 Difference]: Without dead ends: 73 [2024-11-16 06:53:25,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=485, Invalid=2271, Unknown=0, NotChecked=0, Total=2756 [2024-11-16 06:53:25,415 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:25,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 225 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:25,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-16 06:53:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-16 06:53:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2024-11-16 06:53:25,423 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 48 [2024-11-16 06:53:25,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:25,423 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2024-11-16 06:53:25,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 51 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2024-11-16 06:53:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 06:53:25,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:25,426 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:25,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-16 06:53:25,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:25,626 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:25,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1951264270, now seen corresponding path program 11 times [2024-11-16 06:53:25,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:25,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260560258] [2024-11-16 06:53:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:25,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 42 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:26,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:26,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260560258] [2024-11-16 06:53:26,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260560258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:26,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7104838] [2024-11-16 06:53:26,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:26,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:26,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:26,082 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:26,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-16 06:53:26,132 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-16 06:53:26,133 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:26,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 06:53:26,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:26,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:26,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7104838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:26,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:26,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 50 [2024-11-16 06:53:26,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367082333] [2024-11-16 06:53:26,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:26,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-16 06:53:26,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:26,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-16 06:53:26,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=1994, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 06:53:26,963 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 50 states, 50 states have (on average 2.14) internal successors, (107), 50 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:27,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:27,091 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2024-11-16 06:53:27,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 06:53:27,092 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.14) internal successors, (107), 50 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-16 06:53:27,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:27,092 INFO L225 Difference]: With dead ends: 86 [2024-11-16 06:53:27,092 INFO L226 Difference]: Without dead ends: 78 [2024-11-16 06:53:27,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=485, Invalid=2065, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 06:53:27,093 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:27,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 228 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:27,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-16 06:53:27,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2024-11-16 06:53:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 74 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2024-11-16 06:53:27,100 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 48 [2024-11-16 06:53:27,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:27,100 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2024-11-16 06:53:27,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.14) internal successors, (107), 50 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2024-11-16 06:53:27,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 06:53:27,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:27,101 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:27,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-16 06:53:27,301 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,SelfDestructingSolverStorable28 [2024-11-16 06:53:27,301 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:27,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:27,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1073523247, now seen corresponding path program 12 times [2024-11-16 06:53:27,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:27,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698671022] [2024-11-16 06:53:27,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:27,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 58 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:27,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:27,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698671022] [2024-11-16 06:53:27,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698671022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:27,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840173290] [2024-11-16 06:53:27,684 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:27,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:27,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:27,685 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:27,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-16 06:53:27,738 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-16 06:53:27,738 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:27,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 06:53:27,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:28,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:28,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840173290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:28,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:28,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 49 [2024-11-16 06:53:28,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102922938] [2024-11-16 06:53:28,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:28,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 06:53:28,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:28,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 06:53:28,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=454, Invalid=1898, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 06:53:28,583 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:28,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:28,710 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2024-11-16 06:53:28,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 06:53:28,710 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 06:53:28,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:28,711 INFO L225 Difference]: With dead ends: 105 [2024-11-16 06:53:28,711 INFO L226 Difference]: Without dead ends: 74 [2024-11-16 06:53:28,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=471, Invalid=1979, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 06:53:28,712 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:28,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 216 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-16 06:53:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-16 06:53:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 73 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2024-11-16 06:53:28,717 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 50 [2024-11-16 06:53:28,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:28,717 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2024-11-16 06:53:28,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:28,717 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2024-11-16 06:53:28,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 06:53:28,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:28,718 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:28,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:28,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:28,918 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:28,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:28,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2060695505, now seen corresponding path program 12 times [2024-11-16 06:53:28,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:28,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706045992] [2024-11-16 06:53:28,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:28,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:29,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:29,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706045992] [2024-11-16 06:53:29,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706045992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:29,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774358203] [2024-11-16 06:53:29,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:29,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:29,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:29,356 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:29,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-16 06:53:29,420 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-16 06:53:29,421 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:29,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 06:53:29,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 56 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:29,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:30,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774358203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:30,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:30,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 49 [2024-11-16 06:53:30,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457564241] [2024-11-16 06:53:30,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:30,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 06:53:30,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:30,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 06:53:30,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1891, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 06:53:30,276 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 49 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:30,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:30,425 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2024-11-16 06:53:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 06:53:30,426 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 49 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 06:53:30,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:30,426 INFO L225 Difference]: With dead ends: 84 [2024-11-16 06:53:30,426 INFO L226 Difference]: Without dead ends: 76 [2024-11-16 06:53:30,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 65 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=491, Invalid=1959, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 06:53:30,427 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:30,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 212 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-16 06:53:30,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-16 06:53:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 75 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:30,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2024-11-16 06:53:30,434 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 50 [2024-11-16 06:53:30,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:30,434 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2024-11-16 06:53:30,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2244897959183674) internal successors, (109), 49 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:30,435 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2024-11-16 06:53:30,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 06:53:30,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:30,435 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:30,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:30,635 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,SelfDestructingSolverStorable30 [2024-11-16 06:53:30,636 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:30,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:30,636 INFO L85 PathProgramCache]: Analyzing trace with hash 860802128, now seen corresponding path program 13 times [2024-11-16 06:53:30,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:30,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472033987] [2024-11-16 06:53:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:30,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:31,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:31,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472033987] [2024-11-16 06:53:31,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472033987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:31,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809489765] [2024-11-16 06:53:31,079 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:31,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:31,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:31,080 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:31,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-16 06:53:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:31,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 06:53:31,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:31,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:32,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809489765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:32,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:32,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 56 [2024-11-16 06:53:32,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011664856] [2024-11-16 06:53:32,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:32,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-16 06:53:32,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:32,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-16 06:53:32,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=2529, Unknown=0, NotChecked=0, Total=3080 [2024-11-16 06:53:32,273 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 56 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:32,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:32,464 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2024-11-16 06:53:32,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 06:53:32,464 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 56 states have internal predecessors, (117), 0 states have call successors, (0), 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 52 [2024-11-16 06:53:32,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:32,465 INFO L225 Difference]: With dead ends: 112 [2024-11-16 06:53:32,465 INFO L226 Difference]: Without dead ends: 79 [2024-11-16 06:53:32,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 63 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1981 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=579, Invalid=2727, Unknown=0, NotChecked=0, Total=3306 [2024-11-16 06:53:32,466 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:32,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 241 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:32,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-16 06:53:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-16 06:53:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2024-11-16 06:53:32,472 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 52 [2024-11-16 06:53:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:32,472 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2024-11-16 06:53:32,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 56 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2024-11-16 06:53:32,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 06:53:32,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:32,473 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:32,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:32,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:32,673 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:32,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:32,674 INFO L85 PathProgramCache]: Analyzing trace with hash -15385426, now seen corresponding path program 13 times [2024-11-16 06:53:32,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:32,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72734414] [2024-11-16 06:53:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:32,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 56 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:33,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:33,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72734414] [2024-11-16 06:53:33,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72734414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:33,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217413769] [2024-11-16 06:53:33,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:33,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:33,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:33,189 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:33,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-16 06:53:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:33,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 06:53:33,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:33,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:34,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217413769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:34,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:34,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 55 [2024-11-16 06:53:34,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813700722] [2024-11-16 06:53:34,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:34,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-16 06:53:34,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:34,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-16 06:53:34,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=2420, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 06:53:34,217 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:34,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:34,362 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2024-11-16 06:53:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 06:53:34,362 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 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 52 [2024-11-16 06:53:34,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:34,363 INFO L225 Difference]: With dead ends: 92 [2024-11-16 06:53:34,363 INFO L226 Difference]: Without dead ends: 84 [2024-11-16 06:53:34,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 64 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=582, Invalid=2498, Unknown=0, NotChecked=0, Total=3080 [2024-11-16 06:53:34,364 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:34,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 269 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:34,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-16 06:53:34,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2024-11-16 06:53:34,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0625) internal successors, (85), 80 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:34,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2024-11-16 06:53:34,370 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 52 [2024-11-16 06:53:34,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:34,370 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2024-11-16 06:53:34,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 55 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:34,370 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2024-11-16 06:53:34,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 06:53:34,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:34,370 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:34,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:34,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:34,571 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:34,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:34,571 INFO L85 PathProgramCache]: Analyzing trace with hash 908775631, now seen corresponding path program 14 times [2024-11-16 06:53:34,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:34,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561695158] [2024-11-16 06:53:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:34,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 74 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:35,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:35,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561695158] [2024-11-16 06:53:35,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561695158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:35,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682347528] [2024-11-16 06:53:35,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:53:35,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:35,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:35,108 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:35,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-16 06:53:35,176 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:53:35,176 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:35,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 06:53:35,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:35,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:36,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682347528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:36,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:36,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 54 [2024-11-16 06:53:36,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656457869] [2024-11-16 06:53:36,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:36,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-16 06:53:36,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:36,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-16 06:53:36,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=2314, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 06:53:36,185 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 54 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:36,318 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2024-11-16 06:53:36,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 06:53:36,319 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 54 states have internal predecessors, (117), 0 states have call successors, (0), 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 54 [2024-11-16 06:53:36,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:36,319 INFO L225 Difference]: With dead ends: 113 [2024-11-16 06:53:36,319 INFO L226 Difference]: Without dead ends: 80 [2024-11-16 06:53:36,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 70 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=566, Invalid=2404, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 06:53:36,320 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:36,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 234 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:36,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-16 06:53:36,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-16 06:53:36,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 79 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2024-11-16 06:53:36,327 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 54 [2024-11-16 06:53:36,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:36,328 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2024-11-16 06:53:36,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.1666666666666665) internal successors, (117), 54 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2024-11-16 06:53:36,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-16 06:53:36,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:36,329 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:36,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:36,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:36,532 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:36,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:36,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1903379697, now seen corresponding path program 14 times [2024-11-16 06:53:36,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:36,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698181412] [2024-11-16 06:53:36,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:36,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 56 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:36,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:36,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698181412] [2024-11-16 06:53:36,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698181412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:36,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643887761] [2024-11-16 06:53:36,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:53:36,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:36,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:36,992 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:36,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-16 06:53:37,048 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:53:37,049 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:37,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 06:53:37,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 72 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:37,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:37,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643887761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:37,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:37,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 54 [2024-11-16 06:53:37,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613663897] [2024-11-16 06:53:37,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:37,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-16 06:53:37,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:37,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-16 06:53:37,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=2306, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 06:53:37,978 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 54 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:38,104 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2024-11-16 06:53:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 06:53:38,104 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 54 [2024-11-16 06:53:38,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:38,105 INFO L225 Difference]: With dead ends: 90 [2024-11-16 06:53:38,105 INFO L226 Difference]: Without dead ends: 82 [2024-11-16 06:53:38,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 69 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=589, Invalid=2381, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 06:53:38,105 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:38,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 232 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-16 06:53:38,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-16 06:53:38,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 81 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2024-11-16 06:53:38,113 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 54 [2024-11-16 06:53:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:38,113 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2024-11-16 06:53:38,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2024-11-16 06:53:38,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 06:53:38,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:38,114 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:38,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:38,314 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,SelfDestructingSolverStorable34 [2024-11-16 06:53:38,314 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:38,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:38,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1717438256, now seen corresponding path program 15 times [2024-11-16 06:53:38,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:38,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124462170] [2024-11-16 06:53:38,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:38,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 72 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:38,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:38,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124462170] [2024-11-16 06:53:38,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124462170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:38,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603260527] [2024-11-16 06:53:38,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:38,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:38,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:38,841 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:38,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-16 06:53:38,900 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-16 06:53:38,900 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:38,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 06:53:38,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:39,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:40,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603260527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:40,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:40,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 61 [2024-11-16 06:53:40,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601905065] [2024-11-16 06:53:40,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:40,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-16 06:53:40,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:40,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-16 06:53:40,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=3007, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 06:53:40,107 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 61 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:40,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:40,373 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2024-11-16 06:53:40,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 06:53:40,374 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 61 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-16 06:53:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:40,374 INFO L225 Difference]: With dead ends: 120 [2024-11-16 06:53:40,374 INFO L226 Difference]: Without dead ends: 85 [2024-11-16 06:53:40,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 66 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2428 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=682, Invalid=3224, Unknown=0, NotChecked=0, Total=3906 [2024-11-16 06:53:40,375 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:40,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 371 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:40,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-16 06:53:40,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-16 06:53:40,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2024-11-16 06:53:40,385 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 56 [2024-11-16 06:53:40,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:40,385 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2024-11-16 06:53:40,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 61 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:40,385 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2024-11-16 06:53:40,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-16 06:53:40,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:40,386 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:40,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-16 06:53:40,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-16 06:53:40,587 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:40,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:40,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1180169266, now seen corresponding path program 15 times [2024-11-16 06:53:40,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:40,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36305603] [2024-11-16 06:53:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:40,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 72 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:41,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:41,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36305603] [2024-11-16 06:53:41,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36305603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:41,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515200458] [2024-11-16 06:53:41,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:53:41,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:41,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:41,096 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:41,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-16 06:53:41,155 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-16 06:53:41,155 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:41,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 06:53:41,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:41,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:42,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515200458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:42,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:42,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 60 [2024-11-16 06:53:42,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041101100] [2024-11-16 06:53:42,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:42,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-16 06:53:42,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-16 06:53:42,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=2887, Unknown=0, NotChecked=0, Total=3540 [2024-11-16 06:53:42,336 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 60 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:42,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:42,504 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2024-11-16 06:53:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 06:53:42,505 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 60 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-16 06:53:42,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:42,506 INFO L225 Difference]: With dead ends: 98 [2024-11-16 06:53:42,506 INFO L226 Difference]: Without dead ends: 90 [2024-11-16 06:53:42,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 68 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2296 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=688, Invalid=2972, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 06:53:42,507 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:42,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 297 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:42,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-16 06:53:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2024-11-16 06:53:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.058139534883721) internal successors, (91), 86 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2024-11-16 06:53:42,513 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 56 [2024-11-16 06:53:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:42,513 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2024-11-16 06:53:42,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 60 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2024-11-16 06:53:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 06:53:42,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:42,514 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:42,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:42,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:42,715 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:42,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:42,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1756997649, now seen corresponding path program 16 times [2024-11-16 06:53:42,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:42,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902922697] [2024-11-16 06:53:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:42,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 92 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:43,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:43,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902922697] [2024-11-16 06:53:43,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902922697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:43,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987732287] [2024-11-16 06:53:43,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:43,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:43,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:43,195 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:43,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-16 06:53:43,252 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:43,252 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:43,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 06:53:43,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:43,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:44,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987732287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:44,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:44,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 59 [2024-11-16 06:53:44,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503861224] [2024-11-16 06:53:44,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:44,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-16 06:53:44,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:44,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-16 06:53:44,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=2771, Unknown=0, NotChecked=0, Total=3422 [2024-11-16 06:53:44,372 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:44,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:44,554 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2024-11-16 06:53:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 06:53:44,554 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-16 06:53:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:44,555 INFO L225 Difference]: With dead ends: 121 [2024-11-16 06:53:44,555 INFO L226 Difference]: Without dead ends: 86 [2024-11-16 06:53:44,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 74 SyntacticMatches, 9 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2221 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=670, Invalid=2870, Unknown=0, NotChecked=0, Total=3540 [2024-11-16 06:53:44,555 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:44,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 266 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-16 06:53:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-16 06:53:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 85 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2024-11-16 06:53:44,565 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 58 [2024-11-16 06:53:44,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:44,566 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2024-11-16 06:53:44,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2024-11-16 06:53:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 06:53:44,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:44,567 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:44,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-16 06:53:44,767 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,SelfDestructingSolverStorable37 [2024-11-16 06:53:44,767 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:44,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:44,768 INFO L85 PathProgramCache]: Analyzing trace with hash -8880529, now seen corresponding path program 16 times [2024-11-16 06:53:44,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:44,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587511998] [2024-11-16 06:53:44,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:44,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 72 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:45,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:45,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587511998] [2024-11-16 06:53:45,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587511998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:45,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781514458] [2024-11-16 06:53:45,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:53:45,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:45,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:45,340 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:45,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-16 06:53:45,397 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:53:45,397 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:45,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 06:53:45,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 90 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:45,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:46,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781514458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:46,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:46,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 59 [2024-11-16 06:53:46,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37119939] [2024-11-16 06:53:46,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:46,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-16 06:53:46,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:46,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-16 06:53:46,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=660, Invalid=2762, Unknown=0, NotChecked=0, Total=3422 [2024-11-16 06:53:46,484 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand has 59 states, 59 states have (on average 2.1864406779661016) internal successors, (129), 59 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:46,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:46,631 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2024-11-16 06:53:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 06:53:46,631 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1864406779661016) internal successors, (129), 59 states have internal predecessors, (129), 0 states have call successors, (0), 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 58 [2024-11-16 06:53:46,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:46,632 INFO L225 Difference]: With dead ends: 96 [2024-11-16 06:53:46,632 INFO L226 Difference]: Without dead ends: 88 [2024-11-16 06:53:46,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 73 SyntacticMatches, 10 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2276 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=696, Invalid=2844, Unknown=0, NotChecked=0, Total=3540 [2024-11-16 06:53:46,633 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:46,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 296 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:46,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-16 06:53:46,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-16 06:53:46,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 87 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2024-11-16 06:53:46,641 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 58 [2024-11-16 06:53:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:46,642 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2024-11-16 06:53:46,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.1864406779661016) internal successors, (129), 59 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:46,642 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2024-11-16 06:53:46,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 06:53:46,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:46,642 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:46,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:46,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-16 06:53:46,843 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:46,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:46,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1265005200, now seen corresponding path program 17 times [2024-11-16 06:53:46,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:46,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827816992] [2024-11-16 06:53:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:46,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 90 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:47,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:47,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827816992] [2024-11-16 06:53:47,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827816992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:47,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145767445] [2024-11-16 06:53:47,433 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:47,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:47,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:47,435 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:47,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-16 06:53:47,495 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-16 06:53:47,495 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:47,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 06:53:47,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:48,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:48,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145767445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:48,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:48,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 66 [2024-11-16 06:53:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644645799] [2024-11-16 06:53:48,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:48,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-16 06:53:48,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-16 06:53:48,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=3526, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 06:53:48,879 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand has 66 states, 66 states have (on average 2.0757575757575757) internal successors, (137), 66 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:49,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:49,128 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions. [2024-11-16 06:53:49,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-16 06:53:49,128 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0757575757575757) internal successors, (137), 66 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-16 06:53:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:49,129 INFO L225 Difference]: With dead ends: 128 [2024-11-16 06:53:49,129 INFO L226 Difference]: Without dead ends: 91 [2024-11-16 06:53:49,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 71 SyntacticMatches, 11 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=794, Invalid=3762, Unknown=0, NotChecked=0, Total=4556 [2024-11-16 06:53:49,130 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:49,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 315 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:49,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-16 06:53:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-16 06:53:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 90 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2024-11-16 06:53:49,142 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 60 [2024-11-16 06:53:49,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:49,142 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2024-11-16 06:53:49,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0757575757575757) internal successors, (137), 66 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:49,143 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2024-11-16 06:53:49,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 06:53:49,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:49,143 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:49,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-16 06:53:49,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-16 06:53:49,344 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:49,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:49,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1402993518, now seen corresponding path program 17 times [2024-11-16 06:53:49,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:49,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847187866] [2024-11-16 06:53:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:49,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 90 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:49,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:49,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847187866] [2024-11-16 06:53:49,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847187866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:49,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072532245] [2024-11-16 06:53:49,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:53:49,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:49,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:49,954 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:49,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-16 06:53:50,016 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-16 06:53:50,016 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:50,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 06:53:50,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:50,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:51,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072532245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:51,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:51,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 65 [2024-11-16 06:53:51,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369885065] [2024-11-16 06:53:51,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:51,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-16 06:53:51,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:51,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-16 06:53:51,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=765, Invalid=3395, Unknown=0, NotChecked=0, Total=4160 [2024-11-16 06:53:51,291 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:51,496 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2024-11-16 06:53:51,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-16 06:53:51,496 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-16 06:53:51,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:51,497 INFO L225 Difference]: With dead ends: 104 [2024-11-16 06:53:51,497 INFO L226 Difference]: Without dead ends: 96 [2024-11-16 06:53:51,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 72 SyntacticMatches, 11 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2740 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=803, Invalid=3487, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 06:53:51,498 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:51,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 410 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:51,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-16 06:53:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2024-11-16 06:53:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:51,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2024-11-16 06:53:51,513 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 60 [2024-11-16 06:53:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:51,513 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2024-11-16 06:53:51,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.1076923076923078) internal successors, (137), 65 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2024-11-16 06:53:51,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 06:53:51,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:51,513 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:51,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-16 06:53:51,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:51,714 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:51,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:51,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1828659313, now seen corresponding path program 18 times [2024-11-16 06:53:51,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:51,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168596719] [2024-11-16 06:53:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:51,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 112 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:52,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:52,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168596719] [2024-11-16 06:53:52,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168596719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253384365] [2024-11-16 06:53:52,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:52,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:52,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:52,282 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:52,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-16 06:53:52,345 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-16 06:53:52,345 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:52,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-16 06:53:52,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:53,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:53,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253384365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:53,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:53,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 64 [2024-11-16 06:53:53,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600322166] [2024-11-16 06:53:53,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:53,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-16 06:53:53,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:53,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-16 06:53:53,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2024-11-16 06:53:53,629 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 64 states, 64 states have (on average 2.140625) internal successors, (137), 64 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:53,829 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2024-11-16 06:53:53,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-16 06:53:53,829 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.140625) internal successors, (137), 64 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-16 06:53:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:53,830 INFO L225 Difference]: With dead ends: 129 [2024-11-16 06:53:53,830 INFO L226 Difference]: Without dead ends: 92 [2024-11-16 06:53:53,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 78 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2658 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=783, Invalid=3377, Unknown=0, NotChecked=0, Total=4160 [2024-11-16 06:53:53,830 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:53,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 368 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:53:53,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-16 06:53:53,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-16 06:53:53,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.043956043956044) internal successors, (95), 91 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2024-11-16 06:53:53,839 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 62 [2024-11-16 06:53:53,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:53,839 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2024-11-16 06:53:53,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.140625) internal successors, (137), 64 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:53,840 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2024-11-16 06:53:53,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 06:53:53,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:53,840 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:53,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-16 06:53:54,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:54,041 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:54,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:54,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1474638415, now seen corresponding path program 18 times [2024-11-16 06:53:54,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:54,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237784361] [2024-11-16 06:53:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:54,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:54,605 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 90 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:54,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:54,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237784361] [2024-11-16 06:53:54,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237784361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:54,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429132738] [2024-11-16 06:53:54,606 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 06:53:54,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:54,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:54,607 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:54,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-16 06:53:54,670 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-16 06:53:54,671 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:53:54,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-16 06:53:54,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 110 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:55,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:55,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429132738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:55,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:55,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 64 [2024-11-16 06:53:55,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977020891] [2024-11-16 06:53:55,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:55,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-16 06:53:55,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:55,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-16 06:53:55,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=3259, Unknown=0, NotChecked=0, Total=4032 [2024-11-16 06:53:55,898 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand has 64 states, 64 states have (on average 2.171875) internal successors, (139), 64 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:56,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:56,053 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2024-11-16 06:53:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 06:53:56,054 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.171875) internal successors, (139), 64 states have internal predecessors, (139), 0 states have call successors, (0), 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 62 [2024-11-16 06:53:56,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:56,054 INFO L225 Difference]: With dead ends: 102 [2024-11-16 06:53:56,054 INFO L226 Difference]: Without dead ends: 94 [2024-11-16 06:53:56,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 77 SyntacticMatches, 11 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2718 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=812, Invalid=3348, Unknown=0, NotChecked=0, Total=4160 [2024-11-16 06:53:56,055 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:56,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 274 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-16 06:53:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-16 06:53:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.043010752688172) internal successors, (97), 93 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2024-11-16 06:53:56,065 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 62 [2024-11-16 06:53:56,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:56,065 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2024-11-16 06:53:56,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.171875) internal successors, (139), 64 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:56,066 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2024-11-16 06:53:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 06:53:56,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:56,066 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:56,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-16 06:53:56,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-16 06:53:56,267 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:56,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:56,267 INFO L85 PathProgramCache]: Analyzing trace with hash 997568112, now seen corresponding path program 19 times [2024-11-16 06:53:56,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:56,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642261481] [2024-11-16 06:53:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:56,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 110 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:56,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:56,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642261481] [2024-11-16 06:53:56,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642261481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:56,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561613972] [2024-11-16 06:53:56,834 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:56,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:56,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:56,835 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:56,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-16 06:53:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:56,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-16 06:53:56,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:53:57,742 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:57,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:53:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:58,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561613972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:53:58,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:53:58,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 71 [2024-11-16 06:53:58,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468510922] [2024-11-16 06:53:58,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:53:58,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-16 06:53:58,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:53:58,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-16 06:53:58,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=4086, Unknown=0, NotChecked=0, Total=4970 [2024-11-16 06:53:58,438 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 71 states, 71 states have (on average 2.0704225352112675) internal successors, (147), 71 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) [2024-11-16 06:53:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:53:58,676 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2024-11-16 06:53:58,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 06:53:58,676 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0704225352112675) internal successors, (147), 71 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) Word has length 64 [2024-11-16 06:53:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:53:58,677 INFO L225 Difference]: With dead ends: 136 [2024-11-16 06:53:58,677 INFO L226 Difference]: Without dead ends: 97 [2024-11-16 06:53:58,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 75 SyntacticMatches, 12 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3343 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=915, Invalid=4341, Unknown=0, NotChecked=0, Total=5256 [2024-11-16 06:53:58,677 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:53:58,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 319 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:53:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-16 06:53:58,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-16 06:53:58,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:53:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2024-11-16 06:53:58,690 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 64 [2024-11-16 06:53:58,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:53:58,690 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2024-11-16 06:53:58,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.0704225352112675) internal successors, (147), 71 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) [2024-11-16 06:53:58,690 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2024-11-16 06:53:58,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 06:53:58,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:53:58,691 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:53:58,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-16 06:53:58,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-16 06:53:58,892 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:53:58,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:53:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2060364686, now seen corresponding path program 19 times [2024-11-16 06:53:58,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:53:58,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556941470] [2024-11-16 06:53:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:53:58,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:53:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 110 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:53:59,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:53:59,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556941470] [2024-11-16 06:53:59,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556941470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:53:59,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872925689] [2024-11-16 06:53:59,533 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 06:53:59,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:53:59,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:53:59,534 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:53:59,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-16 06:53:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:53:59,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-16 06:53:59,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:00,348 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:00,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:00,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872925689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:00,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:00,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 70 [2024-11-16 06:54:00,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930009521] [2024-11-16 06:54:00,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:00,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-16 06:54:00,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:00,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-16 06:54:00,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=886, Invalid=3944, Unknown=0, NotChecked=0, Total=4830 [2024-11-16 06:54:00,995 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 70 states, 70 states have (on average 2.1) internal successors, (147), 70 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) [2024-11-16 06:54:01,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:01,196 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2024-11-16 06:54:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 06:54:01,196 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 70 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) Word has length 64 [2024-11-16 06:54:01,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:01,197 INFO L225 Difference]: With dead ends: 110 [2024-11-16 06:54:01,197 INFO L226 Difference]: Without dead ends: 102 [2024-11-16 06:54:01,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 76 SyntacticMatches, 12 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3223 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=927, Invalid=4043, Unknown=0, NotChecked=0, Total=4970 [2024-11-16 06:54:01,198 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:01,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 367 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:54:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-16 06:54:01,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2024-11-16 06:54:01,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2024-11-16 06:54:01,207 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 64 [2024-11-16 06:54:01,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:01,207 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2024-11-16 06:54:01,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 70 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) [2024-11-16 06:54:01,207 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2024-11-16 06:54:01,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 06:54:01,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:01,208 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:01,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:01,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-16 06:54:01,408 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:01,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:01,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1455159377, now seen corresponding path program 20 times [2024-11-16 06:54:01,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:01,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367739778] [2024-11-16 06:54:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:01,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 134 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:02,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:02,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367739778] [2024-11-16 06:54:02,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367739778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:02,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983270310] [2024-11-16 06:54:02,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:54:02,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:02,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:02,145 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:02,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-16 06:54:02,219 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:54:02,219 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:02,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 06:54:02,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:03,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:03,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983270310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:03,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:03,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 69 [2024-11-16 06:54:03,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407546400] [2024-11-16 06:54:03,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:03,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-16 06:54:03,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:03,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-16 06:54:03,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=3808, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 06:54:03,700 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 69 states, 69 states have (on average 2.130434782608696) internal successors, (147), 69 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) [2024-11-16 06:54:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:03,848 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2024-11-16 06:54:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 06:54:03,848 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.130434782608696) internal successors, (147), 69 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) Word has length 66 [2024-11-16 06:54:03,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:03,849 INFO L225 Difference]: With dead ends: 137 [2024-11-16 06:54:03,849 INFO L226 Difference]: Without dead ends: 98 [2024-11-16 06:54:03,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 82 SyntacticMatches, 11 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3134 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=905, Invalid=3925, Unknown=0, NotChecked=0, Total=4830 [2024-11-16 06:54:03,850 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:03,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 220 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:54:03,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-16 06:54:03,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-16 06:54:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.041237113402062) internal successors, (101), 97 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2024-11-16 06:54:03,865 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 66 [2024-11-16 06:54:03,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:03,865 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2024-11-16 06:54:03,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.130434782608696) internal successors, (147), 69 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) [2024-11-16 06:54:03,865 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2024-11-16 06:54:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 06:54:03,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:03,866 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:03,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-16 06:54:04,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-16 06:54:04,071 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:04,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:04,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1728083631, now seen corresponding path program 20 times [2024-11-16 06:54:04,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:04,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169566079] [2024-11-16 06:54:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:04,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 110 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:04,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169566079] [2024-11-16 06:54:04,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169566079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:04,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294364247] [2024-11-16 06:54:04,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:54:04,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:04,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:04,743 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:04,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-16 06:54:04,807 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:54:04,807 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:04,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 06:54:04,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 132 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:05,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:06,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294364247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:06,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:06,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 69 [2024-11-16 06:54:06,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218864528] [2024-11-16 06:54:06,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:06,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-16 06:54:06,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:06,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-16 06:54:06,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=895, Invalid=3797, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 06:54:06,180 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 69 states, 69 states have (on average 2.1594202898550723) internal successors, (149), 69 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:06,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:06,355 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2024-11-16 06:54:06,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-16 06:54:06,355 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.1594202898550723) internal successors, (149), 69 states have internal predecessors, (149), 0 states have call successors, (0), 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 66 [2024-11-16 06:54:06,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:06,356 INFO L225 Difference]: With dead ends: 108 [2024-11-16 06:54:06,356 INFO L226 Difference]: Without dead ends: 100 [2024-11-16 06:54:06,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 81 SyntacticMatches, 12 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=937, Invalid=3893, Unknown=0, NotChecked=0, Total=4830 [2024-11-16 06:54:06,357 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:06,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 331 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:54:06,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-16 06:54:06,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-16 06:54:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 99 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2024-11-16 06:54:06,366 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 66 [2024-11-16 06:54:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:06,366 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2024-11-16 06:54:06,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.1594202898550723) internal successors, (149), 69 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2024-11-16 06:54:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 06:54:06,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:06,367 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:06,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:06,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:06,567 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:06,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:06,568 INFO L85 PathProgramCache]: Analyzing trace with hash -254715184, now seen corresponding path program 21 times [2024-11-16 06:54:06,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:06,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774491515] [2024-11-16 06:54:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:06,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 132 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:07,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:07,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774491515] [2024-11-16 06:54:07,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774491515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:07,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626345753] [2024-11-16 06:54:07,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:54:07,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:07,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:07,206 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:07,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-16 06:54:07,276 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-16 06:54:07,276 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:07,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-16 06:54:07,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:08,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:09,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626345753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:09,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:09,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 76 [2024-11-16 06:54:09,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129171448] [2024-11-16 06:54:09,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:09,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-16 06:54:09,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:09,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-16 06:54:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1013, Invalid=4687, Unknown=0, NotChecked=0, Total=5700 [2024-11-16 06:54:09,163 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 76 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:09,423 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2024-11-16 06:54:09,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-16 06:54:09,424 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 76 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 06:54:09,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:09,424 INFO L225 Difference]: With dead ends: 144 [2024-11-16 06:54:09,424 INFO L226 Difference]: Without dead ends: 103 [2024-11-16 06:54:09,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 78 SyntacticMatches, 14 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3916 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1045, Invalid=4961, Unknown=0, NotChecked=0, Total=6006 [2024-11-16 06:54:09,425 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:09,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 260 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:54:09,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-16 06:54:09,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-16 06:54:09,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2024-11-16 06:54:09,439 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 68 [2024-11-16 06:54:09,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:09,439 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2024-11-16 06:54:09,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 76 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:09,439 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2024-11-16 06:54:09,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 06:54:09,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:09,440 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:09,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:09,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-16 06:54:09,641 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:09,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:09,641 INFO L85 PathProgramCache]: Analyzing trace with hash 490585134, now seen corresponding path program 21 times [2024-11-16 06:54:09,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:09,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610403930] [2024-11-16 06:54:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:09,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 132 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:10,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:10,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610403930] [2024-11-16 06:54:10,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610403930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:10,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036312823] [2024-11-16 06:54:10,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:54:10,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:10,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:10,354 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:10,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-16 06:54:10,424 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-16 06:54:10,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:10,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-16 06:54:10,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:11,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:12,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036312823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:12,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:12,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 75 [2024-11-16 06:54:12,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952357656] [2024-11-16 06:54:12,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:12,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-16 06:54:12,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:12,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-16 06:54:12,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1016, Invalid=4534, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 06:54:12,092 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 75 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:12,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:12,271 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2024-11-16 06:54:12,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-16 06:54:12,271 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 75 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 06:54:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:12,272 INFO L225 Difference]: With dead ends: 116 [2024-11-16 06:54:12,272 INFO L226 Difference]: Without dead ends: 108 [2024-11-16 06:54:12,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 80 SyntacticMatches, 13 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3745 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1060, Invalid=4640, Unknown=0, NotChecked=0, Total=5700 [2024-11-16 06:54:12,273 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:12,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 320 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:54:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-16 06:54:12,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2024-11-16 06:54:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 104 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2024-11-16 06:54:12,287 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 68 [2024-11-16 06:54:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:12,287 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2024-11-16 06:54:12,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 75 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2024-11-16 06:54:12,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 06:54:12,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:12,288 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:12,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-16 06:54:12,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-16 06:54:12,489 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:12,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:12,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1815179343, now seen corresponding path program 22 times [2024-11-16 06:54:12,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:12,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093796417] [2024-11-16 06:54:12,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:12,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 158 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:13,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:13,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093796417] [2024-11-16 06:54:13,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093796417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:13,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437576987] [2024-11-16 06:54:13,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:54:13,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:13,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:13,215 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:13,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-16 06:54:13,281 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:54:13,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:13,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 06:54:13,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:14,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:14,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437576987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:14,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:14,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 74 [2024-11-16 06:54:14,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128132176] [2024-11-16 06:54:14,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:14,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-16 06:54:14,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:14,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-16 06:54:14,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1014, Invalid=4388, Unknown=0, NotChecked=0, Total=5402 [2024-11-16 06:54:14,900 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 74 states, 74 states have (on average 2.1216216216216215) internal successors, (157), 74 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:15,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:15,098 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2024-11-16 06:54:15,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-16 06:54:15,099 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.1216216216216215) internal successors, (157), 74 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-16 06:54:15,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:15,099 INFO L225 Difference]: With dead ends: 145 [2024-11-16 06:54:15,099 INFO L226 Difference]: Without dead ends: 104 [2024-11-16 06:54:15,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 86 SyntacticMatches, 12 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3649 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1036, Invalid=4514, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 06:54:15,100 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 5 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:15,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 352 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:54:15,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-16 06:54:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-16 06:54:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 103 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2024-11-16 06:54:15,114 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 70 [2024-11-16 06:54:15,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:15,115 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2024-11-16 06:54:15,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.1216216216216215) internal successors, (157), 74 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2024-11-16 06:54:15,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 06:54:15,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:15,116 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:15,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:15,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-16 06:54:15,316 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:15,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:15,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1294986127, now seen corresponding path program 22 times [2024-11-16 06:54:15,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:15,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994548869] [2024-11-16 06:54:15,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:15,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 132 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:16,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:16,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994548869] [2024-11-16 06:54:16,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994548869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637682110] [2024-11-16 06:54:16,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:54:16,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:16,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:16,094 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:16,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-16 06:54:16,162 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:54:16,163 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:16,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 06:54:16,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:54:16,988 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 156 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:16,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:54:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:17,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637682110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:54:17,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:54:17,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 74 [2024-11-16 06:54:17,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883667745] [2024-11-16 06:54:17,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:54:17,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-16 06:54:17,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:54:17,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-16 06:54:17,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1026, Invalid=4376, Unknown=0, NotChecked=0, Total=5402 [2024-11-16 06:54:17,719 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 74 states, 74 states have (on average 2.1486486486486487) internal successors, (159), 74 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:54:17,858 INFO L93 Difference]: Finished difference Result 114 states and 117 transitions. [2024-11-16 06:54:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-16 06:54:17,859 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.1486486486486487) internal successors, (159), 74 states have internal predecessors, (159), 0 states have call successors, (0), 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 70 [2024-11-16 06:54:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:54:17,859 INFO L225 Difference]: With dead ends: 114 [2024-11-16 06:54:17,859 INFO L226 Difference]: Without dead ends: 106 [2024-11-16 06:54:17,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 13 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3719 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1071, Invalid=4479, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 06:54:17,861 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:54:17,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 240 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:54:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-16 06:54:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-16 06:54:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 105 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:17,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2024-11-16 06:54:17,877 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 70 [2024-11-16 06:54:17,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:54:17,877 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2024-11-16 06:54:17,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.1486486486486487) internal successors, (159), 74 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:54:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2024-11-16 06:54:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 06:54:17,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:54:17,877 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:54:17,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-16 06:54:18,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:18,078 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:54:18,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:54:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash 150411184, now seen corresponding path program 23 times [2024-11-16 06:54:18,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:54:18,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979899942] [2024-11-16 06:54:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:54:18,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:54:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:54:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 156 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:54:18,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:54:18,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979899942] [2024-11-16 06:54:18,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979899942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:54:18,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579160028] [2024-11-16 06:54:18,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:54:18,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:54:18,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:54:18,747 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 06:54:18,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-16 06:54:18,816 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-16 06:54:18,816 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:54:18,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 06:54:18,818 INFO L278 TraceCheckSpWp]: Computing forward predicates...