./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.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 7cdbf1a1c8f20bea42ab4ad35fbada62352deeb8460cfeb3778e870071fb234e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:44:46,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:44:46,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:44:46,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:44:46,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:44:46,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:44:46,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:44:46,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:44:46,639 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:44:46,640 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:44:46,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:44:46,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:44:46,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:44:46,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:44:46,644 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:44:46,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:44:46,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:44:46,645 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:44:46,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:44:46,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:44:46,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:44:46,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:44:46,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:44:46,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:44:46,648 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:44:46,648 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:44:46,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:44:46,649 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:44:46,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:44:46,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:44:46,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:44:46,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:44:46,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:44:46,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:44:46,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:44:46,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:44:46,652 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:44:46,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:44:46,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:44:46,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:44:46,653 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:44:46,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:44:46,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cdbf1a1c8f20bea42ab4ad35fbada62352deeb8460cfeb3778e870071fb234e [2024-10-12 18:44:46,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:44:46,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:44:46,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:44:46,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:44:46,934 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:44:46,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c [2024-10-12 18:44:48,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:44:48,536 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:44:48,537 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c [2024-10-12 18:44:48,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/696671510/08fa2056e9874386aa0f330c9ccaae39/FLAGa309e2d66 [2024-10-12 18:44:48,560 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/696671510/08fa2056e9874386aa0f330c9ccaae39 [2024-10-12 18:44:48,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:44:48,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:44:48,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:44:48,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:44:48,570 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:44:48,571 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22dd9407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48, skipping insertion in model container [2024-10-12 18:44:48,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,594 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:44:48,772 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c[576,589] [2024-10-12 18:44:48,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:44:48,795 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:44:48,804 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c[576,589] [2024-10-12 18:44:48,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:44:48,827 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:44:48,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48 WrapperNode [2024-10-12 18:44:48,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:44:48,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:44:48,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:44:48,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:44:48,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,845 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,865 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-10-12 18:44:48,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:44:48,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:44:48,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:44:48,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:44:48,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,883 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,899 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 18:44:48,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:44:48,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:44:48,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:44:48,921 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:44:48,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (1/1) ... [2024-10-12 18:44:48,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:44:48,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:48,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 18:44:48,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 18:44:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:44:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:44:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:44:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:44:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-12 18:44:49,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-12 18:44:49,086 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:44:49,088 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:44:49,225 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-12 18:44:49,225 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:44:49,256 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:44:49,256 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 18:44:49,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:44:49 BoogieIcfgContainer [2024-10-12 18:44:49,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:44:49,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:44:49,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:44:49,263 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:44:49,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:44:48" (1/3) ... [2024-10-12 18:44:49,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d2f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:44:49, skipping insertion in model container [2024-10-12 18:44:49,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:44:48" (2/3) ... [2024-10-12 18:44:49,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d2f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:44:49, skipping insertion in model container [2024-10-12 18:44:49,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:44:49" (3/3) ... [2024-10-12 18:44:49,266 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound100.c [2024-10-12 18:44:49,280 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:44:49,281 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:44:49,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:44:49,339 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;@a4fa23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:44:49,340 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:44:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-12 18:44:49,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-12 18:44:49,350 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:49,350 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:49,351 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:49,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash 753274055, now seen corresponding path program 1 times [2024-10-12 18:44:49,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:49,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788365106] [2024-10-12 18:44:49,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:49,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:44:49,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:49,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788365106] [2024-10-12 18:44:49,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788365106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:44:49,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:44:49,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 18:44:49,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985521658] [2024-10-12 18:44:49,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:44:49,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 18:44:49,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:49,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 18:44:49,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:44:49,560 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:44:49,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:49,584 INFO L93 Difference]: Finished difference Result 50 states and 82 transitions. [2024-10-12 18:44:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 18:44:49,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-12 18:44:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:49,594 INFO L225 Difference]: With dead ends: 50 [2024-10-12 18:44:49,595 INFO L226 Difference]: Without dead ends: 24 [2024-10-12 18:44:49,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 18:44:49,602 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:49,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:44:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-12 18:44:49,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-12 18:44:49,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-12 18:44:49,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2024-10-12 18:44:49,636 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 8 [2024-10-12 18:44:49,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:49,636 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2024-10-12 18:44:49,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:44:49,637 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2024-10-12 18:44:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-12 18:44:49,638 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:49,638 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:49,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:44:49,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:49,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:49,640 INFO L85 PathProgramCache]: Analyzing trace with hash -79941692, now seen corresponding path program 1 times [2024-10-12 18:44:49,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:49,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755450966] [2024-10-12 18:44:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:49,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:44:49,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:49,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755450966] [2024-10-12 18:44:49,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755450966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:44:49,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:44:49,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 18:44:49,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552530746] [2024-10-12 18:44:49,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:44:49,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:44:49,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:44:49,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:44:49,775 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:44:49,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:49,820 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2024-10-12 18:44:49,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:44:49,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-12 18:44:49,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:49,821 INFO L225 Difference]: With dead ends: 33 [2024-10-12 18:44:49,822 INFO L226 Difference]: Without dead ends: 26 [2024-10-12 18:44:49,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:44:49,824 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:49,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:44:49,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-12 18:44:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-12 18:44:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-12 18:44:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2024-10-12 18:44:49,834 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 9 [2024-10-12 18:44:49,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:49,834 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2024-10-12 18:44:49,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:44:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2024-10-12 18:44:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-12 18:44:49,835 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:49,835 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:49,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 18:44:49,836 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:49,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:49,838 INFO L85 PathProgramCache]: Analyzing trace with hash -78452142, now seen corresponding path program 1 times [2024-10-12 18:44:49,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:49,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543080585] [2024-10-12 18:44:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:49,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:44:49,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350211873] [2024-10-12 18:44:49,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:49,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:49,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:49,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:44:49,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 18:44:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:49,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:44:49,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:44:50,036 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:44:50,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:50,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543080585] [2024-10-12 18:44:50,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:44:50,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350211873] [2024-10-12 18:44:50,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350211873] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:44:50,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:44:50,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:44:50,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029599] [2024-10-12 18:44:50,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:44:50,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:44:50,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:50,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:44:50,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:44:50,041 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:44:50,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:50,112 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2024-10-12 18:44:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:44:50,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-12 18:44:50,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:50,113 INFO L225 Difference]: With dead ends: 36 [2024-10-12 18:44:50,113 INFO L226 Difference]: Without dead ends: 34 [2024-10-12 18:44:50,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:44:50,115 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:50,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:44:50,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-12 18:44:50,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2024-10-12 18:44:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-12 18:44:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-10-12 18:44:50,128 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 9 [2024-10-12 18:44:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:50,128 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-10-12 18:44:50,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:44:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-10-12 18:44:50,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-12 18:44:50,129 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:50,129 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:50,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 18:44:50,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:50,331 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:50,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash 921583882, now seen corresponding path program 1 times [2024-10-12 18:44:50,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:50,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7161094] [2024-10-12 18:44:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:44:50,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080156514] [2024-10-12 18:44:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:50,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:50,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:50,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:44:50,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 18:44:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:50,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:44:50,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:44:50,448 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:44:50,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:50,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7161094] [2024-10-12 18:44:50,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:44:50,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080156514] [2024-10-12 18:44:50,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080156514] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:44:50,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:44:50,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:44:50,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612535194] [2024-10-12 18:44:50,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:44:50,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:44:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:50,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:44:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:44:50,451 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 18:44:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:50,512 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2024-10-12 18:44:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:44:50,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-10-12 18:44:50,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:50,515 INFO L225 Difference]: With dead ends: 49 [2024-10-12 18:44:50,515 INFO L226 Difference]: Without dead ends: 46 [2024-10-12 18:44:50,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:44:50,516 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:50,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 93 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:44:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-12 18:44:50,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-10-12 18:44:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-12 18:44:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2024-10-12 18:44:50,533 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 14 [2024-10-12 18:44:50,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:50,533 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2024-10-12 18:44:50,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 18:44:50,534 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2024-10-12 18:44:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-12 18:44:50,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:50,535 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:50,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 18:44:50,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-12 18:44:50,740 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:50,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:50,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1948965363, now seen corresponding path program 1 times [2024-10-12 18:44:50,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:50,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146759900] [2024-10-12 18:44:50,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:50,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:44:50,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476460690] [2024-10-12 18:44:50,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:50,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:50,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:50,778 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:44:50,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 18:44:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:50,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:44:50,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:44:50,892 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:44:50,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:50,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146759900] [2024-10-12 18:44:50,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:44:50,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476460690] [2024-10-12 18:44:50,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476460690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:44:50,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:44:50,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 18:44:50,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911216788] [2024-10-12 18:44:50,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:44:50,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:44:50,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:50,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:44:50,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 18:44:50,895 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-12 18:44:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:50,974 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2024-10-12 18:44:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:44:50,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-10-12 18:44:50,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:50,977 INFO L225 Difference]: With dead ends: 74 [2024-10-12 18:44:50,980 INFO L226 Difference]: Without dead ends: 72 [2024-10-12 18:44:50,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:44:50,981 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:50,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 110 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:44:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-12 18:44:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2024-10-12 18:44:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 40 states have (on average 1.3) internal successors, (52), 42 states have internal predecessors, (52), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-12 18:44:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 91 transitions. [2024-10-12 18:44:51,002 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 91 transitions. Word has length 22 [2024-10-12 18:44:51,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:51,017 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 91 transitions. [2024-10-12 18:44:51,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-12 18:44:51,018 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 91 transitions. [2024-10-12 18:44:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 18:44:51,019 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:51,019 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:51,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 18:44:51,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:51,220 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:51,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:51,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1914041250, now seen corresponding path program 1 times [2024-10-12 18:44:51,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:51,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313769510] [2024-10-12 18:44:51,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:51,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-12 18:44:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:44:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 18:44:51,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:51,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313769510] [2024-10-12 18:44:51,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313769510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:44:51,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:44:51,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 18:44:51,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578744619] [2024-10-12 18:44:51,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:44:51,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 18:44:51,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:51,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 18:44:51,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:44:51,393 INFO L87 Difference]: Start difference. First operand 65 states and 91 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-12 18:44:51,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:51,436 INFO L93 Difference]: Finished difference Result 104 states and 144 transitions. [2024-10-12 18:44:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 18:44:51,440 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2024-10-12 18:44:51,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:51,443 INFO L225 Difference]: With dead ends: 104 [2024-10-12 18:44:51,443 INFO L226 Difference]: Without dead ends: 69 [2024-10-12 18:44:51,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 18:44:51,445 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:51,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 110 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:44:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-12 18:44:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-10-12 18:44:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 43 states have (on average 1.255813953488372) internal successors, (54), 45 states have internal predecessors, (54), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-12 18:44:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2024-10-12 18:44:51,458 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 25 [2024-10-12 18:44:51,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:51,458 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2024-10-12 18:44:51,458 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-12 18:44:51,458 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2024-10-12 18:44:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-12 18:44:51,459 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:51,459 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:51,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 18:44:51,460 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:51,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash -531579021, now seen corresponding path program 1 times [2024-10-12 18:44:51,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:51,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740977986] [2024-10-12 18:44:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:51,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-12 18:44:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:44:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-12 18:44:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 18:44:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 18:44:51,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:51,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740977986] [2024-10-12 18:44:51,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740977986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:44:51,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:44:51,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-12 18:44:51,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489574894] [2024-10-12 18:44:51,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:44:51,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 18:44:51,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 18:44:51,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:44:51,692 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 18:44:51,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:51,765 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-10-12 18:44:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 18:44:51,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-10-12 18:44:51,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:51,768 INFO L225 Difference]: With dead ends: 75 [2024-10-12 18:44:51,768 INFO L226 Difference]: Without dead ends: 73 [2024-10-12 18:44:51,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-12 18:44:51,769 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:51,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 100 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:44:51,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-12 18:44:51,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-12 18:44:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 48 states have internal predecessors, (57), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-12 18:44:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-10-12 18:44:51,785 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 32 [2024-10-12 18:44:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:51,785 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-10-12 18:44:51,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 18:44:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-10-12 18:44:51,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 18:44:51,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:51,786 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:51,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 18:44:51,787 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:51,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2026419203, now seen corresponding path program 1 times [2024-10-12 18:44:51,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:51,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160283892] [2024-10-12 18:44:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:51,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-12 18:44:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:44:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-12 18:44:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 18:44:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 18:44:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 18:44:51,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:51,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160283892] [2024-10-12 18:44:51,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160283892] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:44:51,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401319440] [2024-10-12 18:44:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:51,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:51,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:51,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:44:51,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 18:44:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:51,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:44:52,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-12 18:44:52,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:44:52,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401319440] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:44:52,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:44:52,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-10-12 18:44:52,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079793017] [2024-10-12 18:44:52,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:44:52,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 18:44:52,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:52,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 18:44:52,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-12 18:44:52,129 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 18:44:52,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:52,239 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2024-10-12 18:44:52,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 18:44:52,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-10-12 18:44:52,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:52,241 INFO L225 Difference]: With dead ends: 86 [2024-10-12 18:44:52,242 INFO L226 Difference]: Without dead ends: 84 [2024-10-12 18:44:52,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-12 18:44:52,243 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:52,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 147 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:44:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-12 18:44:52,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2024-10-12 18:44:52,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 53 states have internal predecessors, (60), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-12 18:44:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 103 transitions. [2024-10-12 18:44:52,260 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 103 transitions. Word has length 38 [2024-10-12 18:44:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:52,260 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 103 transitions. [2024-10-12 18:44:52,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-12 18:44:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 103 transitions. [2024-10-12 18:44:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-12 18:44:52,261 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:52,261 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:52,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 18:44:52,465 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 [2024-10-12 18:44:52,466 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:52,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:52,466 INFO L85 PathProgramCache]: Analyzing trace with hash -369399342, now seen corresponding path program 1 times [2024-10-12 18:44:52,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:52,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549441491] [2024-10-12 18:44:52,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:52,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:52,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-12 18:44:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:52,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:44:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:52,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-12 18:44:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:52,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 18:44:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:52,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 18:44:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-12 18:44:52,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:52,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549441491] [2024-10-12 18:44:52,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549441491] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:44:52,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375755424] [2024-10-12 18:44:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:52,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:52,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:52,620 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:44:52,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 18:44:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:52,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:44:52,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-12 18:44:52,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:44:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-12 18:44:52,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375755424] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:44:52,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:44:52,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 12 [2024-10-12 18:44:52,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532067164] [2024-10-12 18:44:52,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:44:52,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 18:44:52,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 18:44:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:44:52,855 INFO L87 Difference]: Start difference. First operand 79 states and 103 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-12 18:44:53,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:53,045 INFO L93 Difference]: Finished difference Result 246 states and 303 transitions. [2024-10-12 18:44:53,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 18:44:53,046 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 41 [2024-10-12 18:44:53,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:53,048 INFO L225 Difference]: With dead ends: 246 [2024-10-12 18:44:53,048 INFO L226 Difference]: Without dead ends: 239 [2024-10-12 18:44:53,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-10-12 18:44:53,049 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 85 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:53,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 187 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:44:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-12 18:44:53,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 223. [2024-10-12 18:44:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 143 states have (on average 1.2027972027972027) internal successors, (172), 152 states have internal predecessors, (172), 55 states have call successors, (55), 24 states have call predecessors, (55), 24 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-12 18:44:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 278 transitions. [2024-10-12 18:44:53,077 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 278 transitions. Word has length 41 [2024-10-12 18:44:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:53,078 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 278 transitions. [2024-10-12 18:44:53,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-12 18:44:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 278 transitions. [2024-10-12 18:44:53,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:44:53,079 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:53,079 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:53,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 18:44:53,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:53,284 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:53,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1199104068, now seen corresponding path program 1 times [2024-10-12 18:44:53,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:53,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052128011] [2024-10-12 18:44:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:53,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:44:53,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372064272] [2024-10-12 18:44:53,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:53,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:53,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:53,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:44:53,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 18:44:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:53,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 18:44:53,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-12 18:44:53,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:44:53,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:53,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052128011] [2024-10-12 18:44:53,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:44:53,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372064272] [2024-10-12 18:44:53,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372064272] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:44:53,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:44:53,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-12 18:44:53,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110745654] [2024-10-12 18:44:53,985 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-12 18:44:53,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 18:44:53,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:53,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 18:44:53,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-10-12 18:44:53,986 INFO L87 Difference]: Start difference. First operand 223 states and 278 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-12 18:44:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:54,148 INFO L93 Difference]: Finished difference Result 298 states and 366 transitions. [2024-10-12 18:44:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 18:44:54,148 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 46 [2024-10-12 18:44:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:54,150 INFO L225 Difference]: With dead ends: 298 [2024-10-12 18:44:54,150 INFO L226 Difference]: Without dead ends: 186 [2024-10-12 18:44:54,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-10-12 18:44:54,152 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:54,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 138 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:44:54,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-10-12 18:44:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2024-10-12 18:44:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 126 states have internal predecessors, (143), 43 states have call successors, (43), 21 states have call predecessors, (43), 21 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-12 18:44:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 226 transitions. [2024-10-12 18:44:54,183 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 226 transitions. Word has length 46 [2024-10-12 18:44:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:54,184 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 226 transitions. [2024-10-12 18:44:54,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-12 18:44:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 226 transitions. [2024-10-12 18:44:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 18:44:54,187 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:54,187 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:54,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 18:44:54,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:54,388 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:54,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:54,389 INFO L85 PathProgramCache]: Analyzing trace with hash 902121970, now seen corresponding path program 1 times [2024-10-12 18:44:54,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:54,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778490120] [2024-10-12 18:44:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:54,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:44:54,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022612708] [2024-10-12 18:44:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:54,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:54,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:54,419 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:44:54,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 18:44:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:54,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 18:44:54,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-12 18:44:54,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:44:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-12 18:44:54,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:54,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778490120] [2024-10-12 18:44:54,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:44:54,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022612708] [2024-10-12 18:44:54,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022612708] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 18:44:54,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:44:54,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-10-12 18:44:54,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135599087] [2024-10-12 18:44:54,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:44:54,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 18:44:54,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:54,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 18:44:54,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 18:44:54,610 INFO L87 Difference]: Start difference. First operand 185 states and 226 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-12 18:44:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:54,672 INFO L93 Difference]: Finished difference Result 203 states and 243 transitions. [2024-10-12 18:44:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 18:44:54,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2024-10-12 18:44:54,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:54,674 INFO L225 Difference]: With dead ends: 203 [2024-10-12 18:44:54,674 INFO L226 Difference]: Without dead ends: 201 [2024-10-12 18:44:54,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 18:44:54,676 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:54,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 70 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:44:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-12 18:44:54,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-10-12 18:44:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 132 states have (on average 1.1742424242424243) internal successors, (155), 138 states have internal predecessors, (155), 43 states have call successors, (43), 25 states have call predecessors, (43), 25 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-12 18:44:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 238 transitions. [2024-10-12 18:44:54,697 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 238 transitions. Word has length 46 [2024-10-12 18:44:54,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:54,697 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 238 transitions. [2024-10-12 18:44:54,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-12 18:44:54,697 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 238 transitions. [2024-10-12 18:44:54,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 18:44:54,698 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:54,698 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:54,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 18:44:54,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:54,903 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:54,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:54,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1064319211, now seen corresponding path program 1 times [2024-10-12 18:44:54,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:54,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404504120] [2024-10-12 18:44:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:54,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-12 18:44:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:44:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-12 18:44:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 18:44:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 18:44:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 18:44:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-12 18:44:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-12 18:44:55,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:55,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404504120] [2024-10-12 18:44:55,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404504120] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:44:55,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698480203] [2024-10-12 18:44:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:55,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:55,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:55,069 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:44:55,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 18:44:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:44:55,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 40 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-12 18:44:55,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:44:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-12 18:44:55,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698480203] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:44:55,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:44:55,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 12 [2024-10-12 18:44:55,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787410705] [2024-10-12 18:44:55,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:44:55,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 18:44:55,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:55,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 18:44:55,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:44:55,264 INFO L87 Difference]: Start difference. First operand 201 states and 238 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-10-12 18:44:55,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:55,435 INFO L93 Difference]: Finished difference Result 318 states and 375 transitions. [2024-10-12 18:44:55,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 18:44:55,436 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 54 [2024-10-12 18:44:55,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:55,438 INFO L225 Difference]: With dead ends: 318 [2024-10-12 18:44:55,438 INFO L226 Difference]: Without dead ends: 220 [2024-10-12 18:44:55,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-10-12 18:44:55,439 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 82 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:55,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 170 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:44:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-10-12 18:44:55,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2024-10-12 18:44:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 143 states have (on average 1.132867132867133) internal successors, (162), 148 states have internal predecessors, (162), 44 states have call successors, (44), 26 states have call predecessors, (44), 26 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2024-10-12 18:44:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 247 transitions. [2024-10-12 18:44:55,465 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 247 transitions. Word has length 54 [2024-10-12 18:44:55,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:55,465 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 247 transitions. [2024-10-12 18:44:55,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-10-12 18:44:55,465 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 247 transitions. [2024-10-12 18:44:55,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-12 18:44:55,466 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:55,466 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:55,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 18:44:55,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-12 18:44:55,669 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:55,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:55,670 INFO L85 PathProgramCache]: Analyzing trace with hash -716710404, now seen corresponding path program 2 times [2024-10-12 18:44:55,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:55,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710267862] [2024-10-12 18:44:55,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:55,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-12 18:44:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 18:44:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-12 18:44:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 18:44:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 18:44:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-12 18:44:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 18:44:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-12 18:44:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-12 18:44:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-10-12 18:44:55,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:55,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710267862] [2024-10-12 18:44:55,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710267862] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:44:55,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707358037] [2024-10-12 18:44:55,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:44:55,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:55,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:55,804 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:44:55,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 18:44:55,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:44:55,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:44:55,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-12 18:44:55,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-10-12 18:44:55,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:44:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-10-12 18:44:56,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707358037] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:44:56,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:44:56,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 14 [2024-10-12 18:44:56,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709722052] [2024-10-12 18:44:56,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:44:56,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 18:44:56,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:56,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 18:44:56,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-10-12 18:44:56,086 INFO L87 Difference]: Start difference. First operand 214 states and 247 transitions. Second operand has 14 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-10-12 18:44:56,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:56,199 INFO L93 Difference]: Finished difference Result 228 states and 260 transitions. [2024-10-12 18:44:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 18:44:56,200 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 62 [2024-10-12 18:44:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:56,202 INFO L225 Difference]: With dead ends: 228 [2024-10-12 18:44:56,203 INFO L226 Difference]: Without dead ends: 226 [2024-10-12 18:44:56,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-10-12 18:44:56,205 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:56,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 90 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:44:56,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-10-12 18:44:56,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2024-10-12 18:44:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 152 states have (on average 1.118421052631579) internal successors, (170), 157 states have internal predecessors, (170), 44 states have call successors, (44), 29 states have call predecessors, (44), 29 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2024-10-12 18:44:56,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2024-10-12 18:44:56,230 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 62 [2024-10-12 18:44:56,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:56,231 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2024-10-12 18:44:56,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-10-12 18:44:56,231 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2024-10-12 18:44:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-12 18:44:56,232 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:56,232 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:56,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 18:44:56,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 18:44:56,437 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:56,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:56,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1772176059, now seen corresponding path program 1 times [2024-10-12 18:44:56,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:56,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139780725] [2024-10-12 18:44:56,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:56,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:44:56,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292011291] [2024-10-12 18:44:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:56,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:56,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:56,453 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:44:56,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 18:44:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:44:56,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-12 18:44:56,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-12 18:44:56,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:44:57,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:57,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139780725] [2024-10-12 18:44:57,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:44:57,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292011291] [2024-10-12 18:44:57,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292011291] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:44:57,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:44:57,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-10-12 18:44:57,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467475977] [2024-10-12 18:44:57,262 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-12 18:44:57,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 18:44:57,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:57,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 18:44:57,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-10-12 18:44:57,264 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-12 18:44:57,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:57,563 INFO L93 Difference]: Finished difference Result 254 states and 286 transitions. [2024-10-12 18:44:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 18:44:57,563 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 70 [2024-10-12 18:44:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:57,565 INFO L225 Difference]: With dead ends: 254 [2024-10-12 18:44:57,565 INFO L226 Difference]: Without dead ends: 251 [2024-10-12 18:44:57,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2024-10-12 18:44:57,566 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:57,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 369 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 18:44:57,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-10-12 18:44:57,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2024-10-12 18:44:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 168 states have (on average 1.1071428571428572) internal successors, (186), 172 states have internal predecessors, (186), 47 states have call successors, (47), 33 states have call predecessors, (47), 33 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2024-10-12 18:44:57,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 278 transitions. [2024-10-12 18:44:57,587 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 278 transitions. Word has length 70 [2024-10-12 18:44:57,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:57,588 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 278 transitions. [2024-10-12 18:44:57,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-12 18:44:57,588 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 278 transitions. [2024-10-12 18:44:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 18:44:57,589 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:44:57,589 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:57,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 18:44:57,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 18:44:57,794 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:44:57,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:44:57,794 INFO L85 PathProgramCache]: Analyzing trace with hash 51517626, now seen corresponding path program 2 times [2024-10-12 18:44:57,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:44:57,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106464292] [2024-10-12 18:44:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:44:57,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:44:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-12 18:44:57,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111903368] [2024-10-12 18:44:57,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:44:57,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:44:57,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:44:57,812 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:44:57,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 18:44:57,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:44:57,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:44:57,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-12 18:44:57,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:44:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-12 18:44:58,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:44:58,813 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-12 18:44:58,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:44:58,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106464292] [2024-10-12 18:44:58,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-12 18:44:58,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111903368] [2024-10-12 18:44:58,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111903368] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:44:58,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-12 18:44:58,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2024-10-12 18:44:58,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776705692] [2024-10-12 18:44:58,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-12 18:44:58,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-12 18:44:58,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:44:58,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-12 18:44:58,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-10-12 18:44:58,816 INFO L87 Difference]: Start difference. First operand 249 states and 278 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 20 states have internal predecessors, (48), 12 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) [2024-10-12 18:44:59,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:44:59,277 INFO L93 Difference]: Finished difference Result 269 states and 308 transitions. [2024-10-12 18:44:59,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 18:44:59,277 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 20 states have internal predecessors, (48), 12 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) Word has length 94 [2024-10-12 18:44:59,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:44:59,278 INFO L225 Difference]: With dead ends: 269 [2024-10-12 18:44:59,278 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 18:44:59,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2024-10-12 18:44:59,279 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 91 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 18:44:59,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 444 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 18:44:59,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 18:44:59,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 18:44:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:44:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 18:44:59,281 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2024-10-12 18:44:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:44:59,281 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 18:44:59,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 20 states have internal predecessors, (48), 12 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) [2024-10-12 18:44:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 18:44:59,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 18:44:59,287 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 18:44:59,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-12 18:44:59,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 18:44:59,494 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:44:59,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 18:45:00,684 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 18:45:00,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:45:00 BoogieIcfgContainer [2024-10-12 18:45:00,701 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 18:45:00,702 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 18:45:00,702 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 18:45:00,702 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 18:45:00,702 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:44:49" (3/4) ... [2024-10-12 18:45:00,704 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 18:45:00,707 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-12 18:45:00,710 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-12 18:45:00,711 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-12 18:45:00,711 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 18:45:00,712 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 18:45:00,801 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 18:45:00,802 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 18:45:00,802 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 18:45:00,803 INFO L158 Benchmark]: Toolchain (without parser) took 12239.07ms. Allocated memory was 167.8MB in the beginning and 262.1MB in the end (delta: 94.4MB). Free memory was 98.1MB in the beginning and 218.6MB in the end (delta: -120.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 18:45:00,803 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 167.8MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 18:45:00,803 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.80ms. Allocated memory is still 167.8MB. Free memory was 97.9MB in the beginning and 85.5MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 18:45:00,803 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.46ms. Allocated memory is still 167.8MB. Free memory was 85.4MB in the beginning and 83.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 18:45:00,804 INFO L158 Benchmark]: Boogie Preprocessor took 53.99ms. Allocated memory is still 167.8MB. Free memory was 83.8MB in the beginning and 82.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 18:45:00,804 INFO L158 Benchmark]: RCFGBuilder took 336.20ms. Allocated memory is still 167.8MB. Free memory was 82.1MB in the beginning and 128.5MB in the end (delta: -46.3MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2024-10-12 18:45:00,804 INFO L158 Benchmark]: TraceAbstraction took 11442.22ms. Allocated memory was 167.8MB in the beginning and 262.1MB in the end (delta: 94.4MB). Free memory was 127.8MB in the beginning and 223.8MB in the end (delta: -96.0MB). Peak memory consumption was 142.4MB. Max. memory is 16.1GB. [2024-10-12 18:45:00,804 INFO L158 Benchmark]: Witness Printer took 100.56ms. Allocated memory is still 262.1MB. Free memory was 223.8MB in the beginning and 218.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-12 18:45:00,806 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 167.8MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.80ms. Allocated memory is still 167.8MB. Free memory was 97.9MB in the beginning and 85.5MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.46ms. Allocated memory is still 167.8MB. Free memory was 85.4MB in the beginning and 83.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.99ms. Allocated memory is still 167.8MB. Free memory was 83.8MB in the beginning and 82.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 336.20ms. Allocated memory is still 167.8MB. Free memory was 82.1MB in the beginning and 128.5MB in the end (delta: -46.3MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * TraceAbstraction took 11442.22ms. Allocated memory was 167.8MB in the beginning and 262.1MB in the end (delta: 94.4MB). Free memory was 127.8MB in the beginning and 223.8MB in the end (delta: -96.0MB). Peak memory consumption was 142.4MB. Max. memory is 16.1GB. * Witness Printer took 100.56ms. Allocated memory is still 262.1MB. Free memory was 223.8MB in the beginning and 218.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.2s, OverallIterations: 15, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 417 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 378 mSDsluCounter, 2251 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1811 mSDsCounter, 158 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1604 IncrementalHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 158 mSolverCounterUnsat, 440 mSDtfsCounter, 1604 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 997 GetRequests, 850 SyntacticMatches, 4 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=14, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 41 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1066 NumberOfCodeBlocks, 1066 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1038 ConstructedInterpolants, 0 QuantifiedInterpolants, 3724 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1358 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 2218/2395 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((x == (r + ((__int128) q * y))) && (1 <= y)) && (1 <= r)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((x == (r + ((__int128) q * y))) && (1 <= y)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-10-12 18:45:00,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE