./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.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 f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 16:00:50,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 16:00:50,557 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 16:00:50,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 16:00:50,565 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 16:00:50,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 16:00:50,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 16:00:50,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 16:00:50,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 16:00:50,599 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 16:00:50,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 16:00:50,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 16:00:50,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 16:00:50,601 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 16:00:50,601 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 16:00:50,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 16:00:50,602 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 16:00:50,602 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 16:00:50,602 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 16:00:50,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 16:00:50,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 16:00:50,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 16:00:50,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 16:00:50,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 16:00:50,607 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 16:00:50,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 16:00:50,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 16:00:50,608 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 16:00:50,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 16:00:50,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 16:00:50,609 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 16:00:50,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 16:00:50,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 16:00:50,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 16:00:50,610 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 16:00:50,610 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 16:00:50,610 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 16:00:50,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 16:00:50,611 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 16:00:50,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 16:00:50,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 16:00:50,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 16:00:50,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2024-11-11 16:00:50,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 16:00:50,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 16:00:50,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 16:00:50,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 16:00:50,924 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 16:00:50,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2024-11-11 16:00:52,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 16:00:52,523 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 16:00:52,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2024-11-11 16:00:52,535 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ae8082f/7803837e25d842b7b0cbfd672f5af151/FLAGbda012143 [2024-11-11 16:00:52,926 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ae8082f/7803837e25d842b7b0cbfd672f5af151 [2024-11-11 16:00:52,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 16:00:52,930 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 16:00:52,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 16:00:52,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 16:00:52,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 16:00:52,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 04:00:52" (1/1) ... [2024-11-11 16:00:52,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9c6731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:52, skipping insertion in model container [2024-11-11 16:00:52,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 04:00:52" (1/1) ... [2024-11-11 16:00:52,972 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 16:00:53,164 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2024-11-11 16:00:53,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 16:00:53,244 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 16:00:53,256 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2024-11-11 16:00:53,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 16:00:53,317 INFO L204 MainTranslator]: Completed translation [2024-11-11 16:00:53,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53 WrapperNode [2024-11-11 16:00:53,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 16:00:53,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 16:00:53,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 16:00:53,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 16:00:53,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (1/1) ... [2024-11-11 16:00:53,344 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (1/1) ... [2024-11-11 16:00:53,381 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 147 [2024-11-11 16:00:53,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 16:00:53,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 16:00:53,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 16:00:53,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 16:00:53,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (1/1) ... [2024-11-11 16:00:53,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (1/1) ... [2024-11-11 16:00:53,408 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (1/1) ... [2024-11-11 16:00:53,437 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-11 16:00:53,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (1/1) ... [2024-11-11 16:00:53,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (1/1) ... [2024-11-11 16:00:53,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (1/1) ... [2024-11-11 16:00:53,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (1/1) ... [2024-11-11 16:00:53,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (1/1) ... [2024-11-11 16:00:53,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (1/1) ... [2024-11-11 16:00:53,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 16:00:53,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 16:00:53,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 16:00:53,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 16:00:53,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (1/1) ... [2024-11-11 16:00:53,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 16:00:53,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:00:53,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 16:00:53,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 16:00:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 16:00:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 16:00:53,562 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-11 16:00:53,563 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-11 16:00:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 16:00:53,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 16:00:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-11 16:00:53,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-11 16:00:53,654 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 16:00:53,656 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 16:00:53,990 INFO L? ?]: Removed 62 outVars from TransFormulas that were not future-live. [2024-11-11 16:00:53,991 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 16:00:54,008 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 16:00:54,008 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-11 16:00:54,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 04:00:54 BoogieIcfgContainer [2024-11-11 16:00:54,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 16:00:54,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 16:00:54,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 16:00:54,014 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 16:00:54,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 04:00:52" (1/3) ... [2024-11-11 16:00:54,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fadacb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 04:00:54, skipping insertion in model container [2024-11-11 16:00:54,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:00:53" (2/3) ... [2024-11-11 16:00:54,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fadacb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 04:00:54, skipping insertion in model container [2024-11-11 16:00:54,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 04:00:54" (3/3) ... [2024-11-11 16:00:54,018 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2024-11-11 16:00:54,033 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 16:00:54,033 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 16:00:54,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 16:00:54,096 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;@3c16e7fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 16:00:54,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 16:00:54,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 68 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-11 16:00:54,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-11 16:00:54,109 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:00:54,110 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:00:54,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:00:54,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:00:54,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1280901460, now seen corresponding path program 1 times [2024-11-11 16:00:54,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:00:54,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902130629] [2024-11-11 16:00:54,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:54,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:00:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:54,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:00:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:54,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:00:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:54,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 16:00:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:54,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-11 16:00:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-11 16:00:54,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:00:54,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902130629] [2024-11-11 16:00:54,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902130629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:00:54,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:00:54,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:00:54,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128574153] [2024-11-11 16:00:54,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:00:54,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:00:54,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:00:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:00:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:00:54,553 INFO L87 Difference]: Start difference. First operand has 75 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 68 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:00:54,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:00:54,608 INFO L93 Difference]: Finished difference Result 175 states and 269 transitions. [2024-11-11 16:00:54,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:00:54,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-11-11 16:00:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:00:54,621 INFO L225 Difference]: With dead ends: 175 [2024-11-11 16:00:54,622 INFO L226 Difference]: Without dead ends: 69 [2024-11-11 16:00:54,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:00:54,630 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 35 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:00:54,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 203 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 16:00:54,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-11 16:00:54,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-11 16:00:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-11 16:00:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2024-11-11 16:00:54,682 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 42 [2024-11-11 16:00:54,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:00:54,683 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2024-11-11 16:00:54,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:00:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2024-11-11 16:00:54,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-11 16:00:54,688 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:00:54,689 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:00:54,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 16:00:54,690 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:00:54,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:00:54,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2080463270, now seen corresponding path program 1 times [2024-11-11 16:00:54,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:00:54,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548883190] [2024-11-11 16:00:54,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:54,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:00:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:54,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:00:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:54,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:00:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:54,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 16:00:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:54,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-11 16:00:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-11 16:00:54,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:00:54,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548883190] [2024-11-11 16:00:54,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548883190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:00:54,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:00:54,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 16:00:54,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041158578] [2024-11-11 16:00:54,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:00:54,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 16:00:54,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:00:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 16:00:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 16:00:54,879 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:00:54,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:00:54,909 INFO L93 Difference]: Finished difference Result 106 states and 148 transitions. [2024-11-11 16:00:54,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 16:00:54,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2024-11-11 16:00:54,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:00:54,913 INFO L225 Difference]: With dead ends: 106 [2024-11-11 16:00:54,913 INFO L226 Difference]: Without dead ends: 69 [2024-11-11 16:00:54,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 16:00:54,915 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 35 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:00:54,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 283 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 16:00:54,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-11 16:00:54,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-11 16:00:54,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.403225806451613) internal successors, (87), 62 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-11 16:00:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2024-11-11 16:00:54,932 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 44 [2024-11-11 16:00:54,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:00:54,933 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2024-11-11 16:00:54,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:00:54,933 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2024-11-11 16:00:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-11 16:00:54,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:00:54,935 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:00:54,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 16:00:54,936 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:00:54,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:00:54,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1493657256, now seen corresponding path program 1 times [2024-11-11 16:00:54,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:00:54,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836103269] [2024-11-11 16:00:54,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:54,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:00:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:55,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:00:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:55,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:00:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:55,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-11 16:00:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:55,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-11 16:00:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 16:00:55,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:00:55,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836103269] [2024-11-11 16:00:55,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836103269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:00:55,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650052583] [2024-11-11 16:00:55,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:55,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:55,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:00:55,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:00:55,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 16:00:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:55,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-11 16:00:55,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:00:55,353 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 16:00:55,354 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:00:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650052583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:00:55,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:00:55,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-11 16:00:55,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726994527] [2024-11-11 16:00:55,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:00:55,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 16:00:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:00:55,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 16:00:55,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-11 16:00:55,360 INFO L87 Difference]: Start difference. First operand 69 states and 96 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:00:55,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:00:55,479 INFO L93 Difference]: Finished difference Result 156 states and 222 transitions. [2024-11-11 16:00:55,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 16:00:55,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2024-11-11 16:00:55,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:00:55,483 INFO L225 Difference]: With dead ends: 156 [2024-11-11 16:00:55,484 INFO L226 Difference]: Without dead ends: 90 [2024-11-11 16:00:55,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-11 16:00:55,487 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 21 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 16:00:55,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 222 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 16:00:55,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-11 16:00:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2024-11-11 16:00:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 74 states have internal predecessors, (103), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-11 16:00:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 114 transitions. [2024-11-11 16:00:55,501 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 114 transitions. Word has length 44 [2024-11-11 16:00:55,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:00:55,502 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 114 transitions. [2024-11-11 16:00:55,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:00:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 114 transitions. [2024-11-11 16:00:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-11 16:00:55,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:00:55,504 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:00:55,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 16:00:55,705 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 [2024-11-11 16:00:55,705 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:00:55,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:00:55,706 INFO L85 PathProgramCache]: Analyzing trace with hash 417180924, now seen corresponding path program 1 times [2024-11-11 16:00:55,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:00:55,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421715229] [2024-11-11 16:00:55,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:55,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:00:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:55,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:00:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:55,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:00:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:55,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-11 16:00:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:55,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 16:00:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 16:00:55,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:00:55,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421715229] [2024-11-11 16:00:55,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421715229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:00:55,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329468572] [2024-11-11 16:00:55,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:55,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:55,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:00:55,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:00:55,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 16:00:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:55,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 16:00:55,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:00:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 16:00:55,920 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:00:55,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329468572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:00:55,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:00:55,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-11 16:00:55,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029422938] [2024-11-11 16:00:55,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:00:55,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 16:00:55,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:00:55,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 16:00:55,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 16:00:55,923 INFO L87 Difference]: Start difference. First operand 82 states and 114 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:00:55,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:00:55,978 INFO L93 Difference]: Finished difference Result 172 states and 242 transitions. [2024-11-11 16:00:55,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 16:00:55,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-11-11 16:00:55,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:00:55,980 INFO L225 Difference]: With dead ends: 172 [2024-11-11 16:00:55,980 INFO L226 Difference]: Without dead ends: 97 [2024-11-11 16:00:55,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 16:00:55,982 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 15 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:00:55,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 238 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 16:00:55,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-11 16:00:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2024-11-11 16:00:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 79 states have internal predecessors, (108), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-11 16:00:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 121 transitions. [2024-11-11 16:00:55,998 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 121 transitions. Word has length 47 [2024-11-11 16:00:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:00:55,999 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 121 transitions. [2024-11-11 16:00:55,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:00:56,002 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 121 transitions. [2024-11-11 16:00:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-11 16:00:56,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:00:56,007 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:00:56,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 16:00:56,207 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 [2024-11-11 16:00:56,208 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:00:56,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:00:56,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1524103143, now seen corresponding path program 1 times [2024-11-11 16:00:56,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:00:56,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840473333] [2024-11-11 16:00:56,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:56,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:00:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:56,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:00:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:56,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:00:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:56,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-11 16:00:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:56,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-11 16:00:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 16:00:56,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:00:56,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840473333] [2024-11-11 16:00:56,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840473333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:00:56,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738485952] [2024-11-11 16:00:56,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:56,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:56,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:00:56,304 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:00:56,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 16:00:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:56,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 16:00:56,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:00:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 16:00:56,408 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:00:56,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738485952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:00:56,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:00:56,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-11 16:00:56,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148275635] [2024-11-11 16:00:56,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:00:56,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 16:00:56,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:00:56,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 16:00:56,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 16:00:56,414 INFO L87 Difference]: Start difference. First operand 87 states and 121 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:00:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:00:56,474 INFO L93 Difference]: Finished difference Result 178 states and 251 transitions. [2024-11-11 16:00:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 16:00:56,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2024-11-11 16:00:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:00:56,476 INFO L225 Difference]: With dead ends: 178 [2024-11-11 16:00:56,497 INFO L226 Difference]: Without dead ends: 98 [2024-11-11 16:00:56,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 16:00:56,498 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 16 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 16:00:56,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 240 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 16:00:56,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-11 16:00:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 88. [2024-11-11 16:00:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-11 16:00:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2024-11-11 16:00:56,514 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 48 [2024-11-11 16:00:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:00:56,515 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2024-11-11 16:00:56,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:00:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2024-11-11 16:00:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-11 16:00:56,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:00:56,520 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:00:56,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 16:00:56,721 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 [2024-11-11 16:00:56,721 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:00:56,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:00:56,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1669508678, now seen corresponding path program 1 times [2024-11-11 16:00:56,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:00:56,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284761890] [2024-11-11 16:00:56,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:56,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:00:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:56,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:00:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:56,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:00:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:56,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-11 16:00:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:56,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 16:00:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 16:00:56,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:00:56,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284761890] [2024-11-11 16:00:56,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284761890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:00:56,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193463296] [2024-11-11 16:00:56,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:56,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:56,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:00:56,849 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:00:56,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 16:00:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:56,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 16:00:56,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:00:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 16:00:56,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 16:00:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 16:00:57,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193463296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 16:00:57,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 16:00:57,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-11 16:00:57,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000332265] [2024-11-11 16:00:57,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 16:00:57,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 16:00:57,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:00:57,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 16:00:57,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-11 16:00:57,072 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-11 16:00:57,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:00:57,187 INFO L93 Difference]: Finished difference Result 229 states and 330 transitions. [2024-11-11 16:00:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 16:00:57,188 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2024-11-11 16:00:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:00:57,190 INFO L225 Difference]: With dead ends: 229 [2024-11-11 16:00:57,190 INFO L226 Difference]: Without dead ends: 148 [2024-11-11 16:00:57,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-11 16:00:57,191 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 116 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 16:00:57,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 375 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 16:00:57,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-11 16:00:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 102. [2024-11-11 16:00:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 94 states have internal predecessors, (133), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-11 16:00:57,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 146 transitions. [2024-11-11 16:00:57,201 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 146 transitions. Word has length 50 [2024-11-11 16:00:57,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:00:57,202 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 146 transitions. [2024-11-11 16:00:57,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-11 16:00:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 146 transitions. [2024-11-11 16:00:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-11 16:00:57,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:00:57,203 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:00:57,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-11 16:00:57,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:57,404 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:00:57,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:00:57,405 INFO L85 PathProgramCache]: Analyzing trace with hash 376667408, now seen corresponding path program 1 times [2024-11-11 16:00:57,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:00:57,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102746995] [2024-11-11 16:00:57,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:57,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:00:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:57,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:00:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:57,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:00:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:57,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-11 16:00:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:57,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-11 16:00:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 16:00:57,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:00:57,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102746995] [2024-11-11 16:00:57,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102746995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:00:57,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676500825] [2024-11-11 16:00:57,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:57,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:57,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:00:57,513 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:00:57,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 16:00:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:57,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 16:00:57,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:00:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 16:00:57,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 16:00:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 16:00:57,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676500825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 16:00:57,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 16:00:57,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-11 16:00:57,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940765538] [2024-11-11 16:00:57,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 16:00:57,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 16:00:57,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:00:57,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 16:00:57,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-11 16:00:57,746 INFO L87 Difference]: Start difference. First operand 102 states and 146 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-11 16:00:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:00:57,880 INFO L93 Difference]: Finished difference Result 248 states and 362 transitions. [2024-11-11 16:00:57,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 16:00:57,881 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2024-11-11 16:00:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:00:57,883 INFO L225 Difference]: With dead ends: 248 [2024-11-11 16:00:57,884 INFO L226 Difference]: Without dead ends: 153 [2024-11-11 16:00:57,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-11 16:00:57,885 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 132 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 16:00:57,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 481 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 16:00:57,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-11 16:00:57,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 111. [2024-11-11 16:00:57,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 102 states have (on average 1.4509803921568627) internal successors, (148), 103 states have internal predecessors, (148), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-11 16:00:57,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2024-11-11 16:00:57,895 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 161 transitions. Word has length 51 [2024-11-11 16:00:57,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:00:57,895 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 161 transitions. [2024-11-11 16:00:57,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-11 16:00:57,896 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 161 transitions. [2024-11-11 16:00:57,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-11 16:00:57,897 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:00:57,897 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:00:57,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 16:00:58,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:58,099 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:00:58,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:00:58,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1690184016, now seen corresponding path program 1 times [2024-11-11 16:00:58,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:00:58,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054721831] [2024-11-11 16:00:58,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:58,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:00:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:00:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:00:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 16:00:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-11 16:00:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 16:00:58,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:00:58,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054721831] [2024-11-11 16:00:58,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054721831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:00:58,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436653596] [2024-11-11 16:00:58,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:58,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:58,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:00:58,177 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:00:58,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 16:00:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 16:00:58,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:00:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-11 16:00:58,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:00:58,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436653596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:00:58,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:00:58,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-11 16:00:58,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894074476] [2024-11-11 16:00:58,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:00:58,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:00:58,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:00:58,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:00:58,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:00:58,258 INFO L87 Difference]: Start difference. First operand 111 states and 161 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:00:58,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:00:58,296 INFO L93 Difference]: Finished difference Result 224 states and 332 transitions. [2024-11-11 16:00:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:00:58,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-11 16:00:58,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:00:58,297 INFO L225 Difference]: With dead ends: 224 [2024-11-11 16:00:58,297 INFO L226 Difference]: Without dead ends: 120 [2024-11-11 16:00:58,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:00:58,298 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 5 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:00:58,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 172 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 16:00:58,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-11 16:00:58,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2024-11-11 16:00:58,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 104 states have (on average 1.4423076923076923) internal successors, (150), 105 states have internal predecessors, (150), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-11 16:00:58,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 163 transitions. [2024-11-11 16:00:58,317 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 163 transitions. Word has length 52 [2024-11-11 16:00:58,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:00:58,317 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 163 transitions. [2024-11-11 16:00:58,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:00:58,318 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 163 transitions. [2024-11-11 16:00:58,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-11 16:00:58,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:00:58,318 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:00:58,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-11 16:00:58,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:58,519 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:00:58,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:00:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2138286388, now seen corresponding path program 1 times [2024-11-11 16:00:58,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:00:58,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513994188] [2024-11-11 16:00:58,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:58,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:00:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:00:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:00:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 16:00:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-11 16:00:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 16:00:58,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:00:58,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513994188] [2024-11-11 16:00:58,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513994188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:00:58,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616185653] [2024-11-11 16:00:58,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:58,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:58,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:00:58,592 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:00:58,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 16:00:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 16:00:58,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:00:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-11 16:00:58,666 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:00:58,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616185653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:00:58,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:00:58,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-11-11 16:00:58,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453726023] [2024-11-11 16:00:58,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:00:58,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:00:58,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:00:58,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:00:58,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:00:58,667 INFO L87 Difference]: Start difference. First operand 113 states and 163 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:00:58,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:00:58,708 INFO L93 Difference]: Finished difference Result 222 states and 326 transitions. [2024-11-11 16:00:58,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:00:58,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-11-11 16:00:58,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:00:58,710 INFO L225 Difference]: With dead ends: 222 [2024-11-11 16:00:58,710 INFO L226 Difference]: Without dead ends: 116 [2024-11-11 16:00:58,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:00:58,712 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 8 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:00:58,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 171 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 16:00:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-11 16:00:58,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2024-11-11 16:00:58,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 100 states have (on average 1.42) internal successors, (142), 101 states have internal predecessors, (142), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-11 16:00:58,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2024-11-11 16:00:58,726 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 52 [2024-11-11 16:00:58,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:00:58,726 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2024-11-11 16:00:58,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:00:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2024-11-11 16:00:58,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-11 16:00:58,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:00:58,728 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:00:58,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-11 16:00:58,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:58,929 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:00:58,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:00:58,930 INFO L85 PathProgramCache]: Analyzing trace with hash -574027671, now seen corresponding path program 1 times [2024-11-11 16:00:58,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:00:58,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602503982] [2024-11-11 16:00:58,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:58,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:00:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:00:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:58,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:00:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:59,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-11 16:00:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:59,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-11 16:00:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 16:00:59,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:00:59,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602503982] [2024-11-11 16:00:59,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602503982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:00:59,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474823229] [2024-11-11 16:00:59,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:59,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:59,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:00:59,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:00:59,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-11 16:00:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:59,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-11 16:00:59,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:00:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 16:00:59,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 16:00:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 16:00:59,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474823229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 16:00:59,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 16:00:59,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2024-11-11 16:00:59,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456762663] [2024-11-11 16:00:59,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 16:00:59,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 16:00:59,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:00:59,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 16:00:59,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-11 16:00:59,350 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 12 states have internal predecessors, (68), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-11 16:00:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:00:59,632 INFO L93 Difference]: Finished difference Result 268 states and 390 transitions. [2024-11-11 16:00:59,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-11 16:00:59,633 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 12 states have internal predecessors, (68), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 53 [2024-11-11 16:00:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:00:59,634 INFO L225 Difference]: With dead ends: 268 [2024-11-11 16:00:59,634 INFO L226 Difference]: Without dead ends: 166 [2024-11-11 16:00:59,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-11 16:00:59,635 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 63 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 16:00:59,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 796 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 16:00:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-11 16:00:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 140. [2024-11-11 16:00:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 128 states have (on average 1.375) internal successors, (176), 130 states have internal predecessors, (176), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-11 16:00:59,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 200 transitions. [2024-11-11 16:00:59,645 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 200 transitions. Word has length 53 [2024-11-11 16:00:59,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:00:59,646 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 200 transitions. [2024-11-11 16:00:59,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 12 states have internal predecessors, (68), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-11 16:00:59,646 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 200 transitions. [2024-11-11 16:00:59,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-11 16:00:59,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:00:59,647 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:00:59,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-11 16:00:59,847 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,SelfDestructingSolverStorable9 [2024-11-11 16:00:59,848 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:00:59,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:00:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1968825878, now seen corresponding path program 1 times [2024-11-11 16:00:59,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:00:59,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82111948] [2024-11-11 16:00:59,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:59,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:00:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:59,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:00:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:59,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:00:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:59,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-11 16:00:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:59,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-11 16:00:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:00:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 16:00:59,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:00:59,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82111948] [2024-11-11 16:00:59,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82111948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:00:59,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992460107] [2024-11-11 16:00:59,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:00:59,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:00:59,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:00:59,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:00:59,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-11 16:01:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:00,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 16:01:00,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:01:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-11 16:01:00,051 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:01:00,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992460107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:01:00,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:01:00,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-11 16:01:00,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894832207] [2024-11-11 16:01:00,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:01:00,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:01:00,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:01:00,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:01:00,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:01:00,053 INFO L87 Difference]: Start difference. First operand 140 states and 200 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:01:00,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:01:00,093 INFO L93 Difference]: Finished difference Result 276 states and 399 transitions. [2024-11-11 16:01:00,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:01:00,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-11 16:01:00,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:01:00,095 INFO L225 Difference]: With dead ends: 276 [2024-11-11 16:01:00,095 INFO L226 Difference]: Without dead ends: 143 [2024-11-11 16:01:00,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:01:00,096 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 6 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:01:00,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 178 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 16:01:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-11 16:01:00,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2024-11-11 16:01:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 128 states have (on average 1.3671875) internal successors, (175), 130 states have internal predecessors, (175), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-11 16:01:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 199 transitions. [2024-11-11 16:01:00,107 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 199 transitions. Word has length 55 [2024-11-11 16:01:00,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:01:00,107 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 199 transitions. [2024-11-11 16:01:00,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:01:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 199 transitions. [2024-11-11 16:01:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-11 16:01:00,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:01:00,109 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:01:00,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-11 16:01:00,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:00,309 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:01:00,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:01:00,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1780157041, now seen corresponding path program 1 times [2024-11-11 16:01:00,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:01:00,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088104268] [2024-11-11 16:01:00,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:00,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:01:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:00,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:01:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:00,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:01:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:00,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 16:01:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:00,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-11 16:01:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 16:01:00,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:01:00,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088104268] [2024-11-11 16:01:00,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088104268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:01:00,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:01:00,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-11 16:01:00,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947911587] [2024-11-11 16:01:00,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:01:00,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-11 16:01:00,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:01:00,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-11 16:01:00,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-11 16:01:00,520 INFO L87 Difference]: Start difference. First operand 140 states and 199 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:01:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:01:00,594 INFO L93 Difference]: Finished difference Result 181 states and 254 transitions. [2024-11-11 16:01:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 16:01:00,594 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2024-11-11 16:01:00,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:01:00,595 INFO L225 Difference]: With dead ends: 181 [2024-11-11 16:01:00,596 INFO L226 Difference]: Without dead ends: 147 [2024-11-11 16:01:00,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-11 16:01:00,596 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 5 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 16:01:00,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 690 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 16:01:00,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-11 16:01:00,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-11 16:01:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 135 states have (on average 1.348148148148148) internal successors, (182), 136 states have internal predecessors, (182), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-11 16:01:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 206 transitions. [2024-11-11 16:01:00,609 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 206 transitions. Word has length 56 [2024-11-11 16:01:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:01:00,609 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 206 transitions. [2024-11-11 16:01:00,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-11 16:01:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 206 transitions. [2024-11-11 16:01:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-11 16:01:00,611 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:01:00,611 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:01:00,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-11 16:01:00,611 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:01:00,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:01:00,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1521991603, now seen corresponding path program 1 times [2024-11-11 16:01:00,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:01:00,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959937785] [2024-11-11 16:01:00,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:00,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:01:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:00,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:01:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:00,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:01:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:00,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 16:01:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:00,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-11 16:01:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 16:01:00,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:01:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959937785] [2024-11-11 16:01:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959937785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:01:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626159292] [2024-11-11 16:01:00,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:00,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:00,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:01:00,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:01:00,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-11 16:01:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:00,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-11 16:01:00,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:01:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 16:01:00,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 16:01:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-11 16:01:00,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626159292] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-11 16:01:00,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-11 16:01:00,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 9] total 12 [2024-11-11 16:01:00,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102443840] [2024-11-11 16:01:00,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:01:01,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 16:01:01,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:01:01,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 16:01:01,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-11 16:01:01,001 INFO L87 Difference]: Start difference. First operand 147 states and 206 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:01:01,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:01:01,052 INFO L93 Difference]: Finished difference Result 162 states and 222 transitions. [2024-11-11 16:01:01,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 16:01:01,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2024-11-11 16:01:01,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:01:01,054 INFO L225 Difference]: With dead ends: 162 [2024-11-11 16:01:01,054 INFO L226 Difference]: Without dead ends: 156 [2024-11-11 16:01:01,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-11 16:01:01,055 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:01:01,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 337 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 16:01:01,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-11 16:01:01,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2024-11-11 16:01:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 144 states have (on average 1.3333333333333333) internal successors, (192), 145 states have internal predecessors, (192), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-11 16:01:01,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 216 transitions. [2024-11-11 16:01:01,067 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 216 transitions. Word has length 56 [2024-11-11 16:01:01,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:01:01,067 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 216 transitions. [2024-11-11 16:01:01,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:01:01,068 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 216 transitions. [2024-11-11 16:01:01,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-11 16:01:01,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:01:01,069 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:01:01,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-11 16:01:01,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-11 16:01:01,270 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:01:01,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:01:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1464733301, now seen corresponding path program 1 times [2024-11-11 16:01:01,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:01:01,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178394893] [2024-11-11 16:01:01,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:01,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:01:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:01,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:01:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:01,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:01:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:01,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 16:01:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:01,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-11 16:01:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-11 16:01:01,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:01:01,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178394893] [2024-11-11 16:01:01,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178394893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:01:01,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:01:01,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-11 16:01:01,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753476677] [2024-11-11 16:01:01,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:01:01,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-11 16:01:01,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:01:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-11 16:01:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-11 16:01:01,366 INFO L87 Difference]: Start difference. First operand 156 states and 216 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:01:01,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:01:01,392 INFO L93 Difference]: Finished difference Result 162 states and 221 transitions. [2024-11-11 16:01:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-11 16:01:01,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2024-11-11 16:01:01,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:01:01,393 INFO L225 Difference]: With dead ends: 162 [2024-11-11 16:01:01,394 INFO L226 Difference]: Without dead ends: 144 [2024-11-11 16:01:01,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-11 16:01:01,394 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 1 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:01:01,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 458 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 16:01:01,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-11 16:01:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-11 16:01:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 132 states have (on average 1.3333333333333333) internal successors, (176), 134 states have internal predecessors, (176), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-11 16:01:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 197 transitions. [2024-11-11 16:01:01,402 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 197 transitions. Word has length 56 [2024-11-11 16:01:01,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:01:01,403 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 197 transitions. [2024-11-11 16:01:01,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:01:01,403 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 197 transitions. [2024-11-11 16:01:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-11 16:01:01,404 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:01:01,404 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:01:01,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-11 16:01:01,404 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:01:01,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:01:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1837775848, now seen corresponding path program 1 times [2024-11-11 16:01:01,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:01:01,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569788563] [2024-11-11 16:01:01,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:01,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:01:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:01,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:01:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:01,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:01:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:01,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 16:01:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:01,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-11 16:01:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 16:01:01,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:01:01,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569788563] [2024-11-11 16:01:01,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569788563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:01:01,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61462690] [2024-11-11 16:01:01,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:01,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:01,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:01:01,541 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:01:01,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-11 16:01:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:01,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-11 16:01:01,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:01:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 16:01:01,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 16:01:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-11 16:01:01,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61462690] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-11 16:01:01,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-11 16:01:01,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 12 [2024-11-11 16:01:01,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719600484] [2024-11-11 16:01:01,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:01:01,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-11 16:01:01,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:01:01,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-11 16:01:01,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-11 16:01:01,785 INFO L87 Difference]: Start difference. First operand 144 states and 197 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:01:01,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:01:01,851 INFO L93 Difference]: Finished difference Result 157 states and 210 transitions. [2024-11-11 16:01:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 16:01:01,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2024-11-11 16:01:01,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:01:01,853 INFO L225 Difference]: With dead ends: 157 [2024-11-11 16:01:01,853 INFO L226 Difference]: Without dead ends: 148 [2024-11-11 16:01:01,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-11 16:01:01,853 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 8 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:01:01,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 329 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 16:01:01,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-11 16:01:01,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2024-11-11 16:01:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 133 states have (on average 1.330827067669173) internal successors, (177), 135 states have internal predecessors, (177), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-11 16:01:01,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 198 transitions. [2024-11-11 16:01:01,864 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 198 transitions. Word has length 58 [2024-11-11 16:01:01,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:01:01,864 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 198 transitions. [2024-11-11 16:01:01,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:01:01,864 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 198 transitions. [2024-11-11 16:01:01,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-11 16:01:01,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:01:01,865 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:01:01,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-11 16:01:02,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-11 16:01:02,070 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:01:02,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:01:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2064164438, now seen corresponding path program 1 times [2024-11-11 16:01:02,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:01:02,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335491928] [2024-11-11 16:01:02,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:02,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:01:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:02,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:01:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:02,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:01:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:02,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 16:01:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:02,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-11 16:01:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 16:01:02,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:01:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335491928] [2024-11-11 16:01:02,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335491928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:01:02,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468597904] [2024-11-11 16:01:02,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:02,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:02,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:01:02,254 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:01:02,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-11 16:01:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:02,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-11 16:01:02,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:01:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 16:01:02,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 16:01:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 16:01:02,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468597904] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 16:01:02,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 16:01:02,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 14 [2024-11-11 16:01:02,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685307468] [2024-11-11 16:01:02,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 16:01:02,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 16:01:02,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:01:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 16:01:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-11 16:01:02,470 INFO L87 Difference]: Start difference. First operand 145 states and 198 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 11 states have internal predecessors, (73), 5 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-11 16:01:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:01:02,566 INFO L93 Difference]: Finished difference Result 195 states and 269 transitions. [2024-11-11 16:01:02,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 16:01:02,567 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 11 states have internal predecessors, (73), 5 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 58 [2024-11-11 16:01:02,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:01:02,573 INFO L225 Difference]: With dead ends: 195 [2024-11-11 16:01:02,573 INFO L226 Difference]: Without dead ends: 144 [2024-11-11 16:01:02,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-11 16:01:02,574 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 36 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 16:01:02,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1072 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 16:01:02,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-11 16:01:02,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 110. [2024-11-11 16:01:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 97 states have (on average 1.309278350515464) internal successors, (127), 101 states have internal predecessors, (127), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-11 16:01:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 150 transitions. [2024-11-11 16:01:02,585 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 150 transitions. Word has length 58 [2024-11-11 16:01:02,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:01:02,586 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 150 transitions. [2024-11-11 16:01:02,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 11 states have internal predecessors, (73), 5 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-11 16:01:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 150 transitions. [2024-11-11 16:01:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-11 16:01:02,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:01:02,587 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:01:02,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-11 16:01:02,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-11 16:01:02,792 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:01:02,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:01:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1628124074, now seen corresponding path program 1 times [2024-11-11 16:01:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:01:02,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920222834] [2024-11-11 16:01:02,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:02,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:01:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:02,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:01:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:02,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:01:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:02,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 16:01:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:02,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-11 16:01:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 16:01:02,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:01:02,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920222834] [2024-11-11 16:01:02,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920222834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:01:02,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407138402] [2024-11-11 16:01:02,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:02,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:02,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:01:02,950 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:01:02,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-11 16:01:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:03,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-11 16:01:03,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:01:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 16:01:03,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 16:01:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 16:01:03,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407138402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 16:01:03,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 16:01:03,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-11 16:01:03,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336964648] [2024-11-11 16:01:03,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 16:01:03,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 16:01:03,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:01:03,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 16:01:03,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-11 16:01:03,205 INFO L87 Difference]: Start difference. First operand 110 states and 150 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-11 16:01:03,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:01:03,294 INFO L93 Difference]: Finished difference Result 151 states and 201 transitions. [2024-11-11 16:01:03,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 16:01:03,295 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 65 [2024-11-11 16:01:03,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:01:03,296 INFO L225 Difference]: With dead ends: 151 [2024-11-11 16:01:03,296 INFO L226 Difference]: Without dead ends: 108 [2024-11-11 16:01:03,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-11 16:01:03,297 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 2 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 16:01:03,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 844 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 16:01:03,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-11 16:01:03,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2024-11-11 16:01:03,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 97 states have internal predecessors, (124), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-11 16:01:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 139 transitions. [2024-11-11 16:01:03,307 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 139 transitions. Word has length 65 [2024-11-11 16:01:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:01:03,308 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 139 transitions. [2024-11-11 16:01:03,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-11 16:01:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 139 transitions. [2024-11-11 16:01:03,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-11 16:01:03,309 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:01:03,309 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:01:03,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-11 16:01:03,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-11 16:01:03,514 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:01:03,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:01:03,514 INFO L85 PathProgramCache]: Analyzing trace with hash -84113800, now seen corresponding path program 1 times [2024-11-11 16:01:03,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:01:03,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561527212] [2024-11-11 16:01:03,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:03,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:01:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:03,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:01:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:03,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:01:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:03,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 16:01:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:03,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-11 16:01:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 16:01:03,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:01:03,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561527212] [2024-11-11 16:01:03,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561527212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:01:03,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788434358] [2024-11-11 16:01:03,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:03,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:03,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:01:03,644 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:01:03,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-11 16:01:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:03,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-11 16:01:03,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:01:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 16:01:03,977 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:01:03,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788434358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:01:03,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:01:03,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-11 16:01:03,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837752233] [2024-11-11 16:01:03,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:01:03,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 16:01:03,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:01:03,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 16:01:03,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-11 16:01:03,979 INFO L87 Difference]: Start difference. First operand 105 states and 139 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:01:04,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:01:04,015 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2024-11-11 16:01:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 16:01:04,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2024-11-11 16:01:04,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:01:04,016 INFO L225 Difference]: With dead ends: 149 [2024-11-11 16:01:04,016 INFO L226 Difference]: Without dead ends: 105 [2024-11-11 16:01:04,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-11 16:01:04,017 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 1 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:01:04,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 517 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 16:01:04,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-11 16:01:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-11 16:01:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 94 states have (on average 1.2765957446808511) internal successors, (120), 97 states have internal predecessors, (120), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-11 16:01:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2024-11-11 16:01:04,037 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 70 [2024-11-11 16:01:04,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:01:04,037 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2024-11-11 16:01:04,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:01:04,038 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2024-11-11 16:01:04,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-11 16:01:04,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:01:04,039 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:01:04,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-11 16:01:04,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:04,239 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:01:04,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:01:04,240 INFO L85 PathProgramCache]: Analyzing trace with hash -75449561, now seen corresponding path program 1 times [2024-11-11 16:01:04,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:01:04,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525316097] [2024-11-11 16:01:04,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:04,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:01:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:04,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:01:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:04,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:01:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:04,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 16:01:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:04,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-11 16:01:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 16:01:04,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:01:04,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525316097] [2024-11-11 16:01:04,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525316097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:01:04,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834068913] [2024-11-11 16:01:04,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:04,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:04,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:01:04,379 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:01:04,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-11 16:01:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:04,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-11 16:01:04,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:01:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-11 16:01:04,522 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:01:04,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834068913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:01:04,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:01:04,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2024-11-11 16:01:04,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672869051] [2024-11-11 16:01:04,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:01:04,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-11 16:01:04,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:01:04,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-11 16:01:04,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-11 16:01:04,524 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:01:04,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:01:04,597 INFO L93 Difference]: Finished difference Result 150 states and 189 transitions. [2024-11-11 16:01:04,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-11 16:01:04,598 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2024-11-11 16:01:04,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:01:04,599 INFO L225 Difference]: With dead ends: 150 [2024-11-11 16:01:04,599 INFO L226 Difference]: Without dead ends: 120 [2024-11-11 16:01:04,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-11 16:01:04,600 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 8 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 16:01:04,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 664 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 16:01:04,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-11 16:01:04,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2024-11-11 16:01:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 104 states have internal predecessors, (129), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-11 16:01:04,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 142 transitions. [2024-11-11 16:01:04,607 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 142 transitions. Word has length 74 [2024-11-11 16:01:04,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:01:04,608 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 142 transitions. [2024-11-11 16:01:04,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:01:04,608 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 142 transitions. [2024-11-11 16:01:04,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-11 16:01:04,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:01:04,609 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:01:04,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-11 16:01:04,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:04,813 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:01:04,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:01:04,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1663797463, now seen corresponding path program 1 times [2024-11-11 16:01:04,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:01:04,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069547141] [2024-11-11 16:01:04,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:04,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:01:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:04,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:01:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:04,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:01:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:04,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 16:01:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:04,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-11 16:01:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 16:01:04,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:01:04,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069547141] [2024-11-11 16:01:04,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069547141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:01:04,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203349144] [2024-11-11 16:01:04,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:04,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:04,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:01:04,946 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:01:04,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-11 16:01:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:05,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-11 16:01:05,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:01:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-11 16:01:05,110 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:01:05,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203349144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:01:05,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:01:05,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-11-11 16:01:05,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615238129] [2024-11-11 16:01:05,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:01:05,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 16:01:05,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:01:05,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 16:01:05,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-11 16:01:05,111 INFO L87 Difference]: Start difference. First operand 113 states and 142 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:01:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:01:05,170 INFO L93 Difference]: Finished difference Result 147 states and 185 transitions. [2024-11-11 16:01:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 16:01:05,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2024-11-11 16:01:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:01:05,171 INFO L225 Difference]: With dead ends: 147 [2024-11-11 16:01:05,171 INFO L226 Difference]: Without dead ends: 121 [2024-11-11 16:01:05,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-11 16:01:05,172 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 5 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 16:01:05,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 597 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 16:01:05,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-11 16:01:05,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2024-11-11 16:01:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 108 states have (on average 1.2592592592592593) internal successors, (136), 110 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-11 16:01:05,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 149 transitions. [2024-11-11 16:01:05,179 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 149 transitions. Word has length 74 [2024-11-11 16:01:05,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:01:05,180 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 149 transitions. [2024-11-11 16:01:05,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-11 16:01:05,180 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 149 transitions. [2024-11-11 16:01:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-11 16:01:05,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:01:05,181 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:01:05,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-11 16:01:05,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:05,386 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:01:05,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:01:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1669567562, now seen corresponding path program 1 times [2024-11-11 16:01:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:01:05,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454888812] [2024-11-11 16:01:05,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:05,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:01:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:05,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-11 16:01:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:05,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 16:01:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:05,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 16:01:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:05,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-11 16:01:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 16:01:05,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:01:05,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454888812] [2024-11-11 16:01:05,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454888812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:01:05,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005501007] [2024-11-11 16:01:05,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:01:05,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:05,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:01:05,506 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 16:01:05,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-11 16:01:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:01:05,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-11 16:01:05,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:01:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-11 16:01:06,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 16:01:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-11 16:01:07,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005501007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 16:01:07,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 16:01:07,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 16, 16] total 33 [2024-11-11 16:01:07,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877629327] [2024-11-11 16:01:07,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 16:01:07,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-11 16:01:07,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:01:07,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-11 16:01:07,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2024-11-11 16:01:07,005 INFO L87 Difference]: Start difference. First operand 119 states and 149 transitions. Second operand has 33 states, 32 states have (on average 3.59375) internal successors, (115), 29 states have internal predecessors, (115), 7 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-11 16:01:08,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:01:08,031 INFO L93 Difference]: Finished difference Result 236 states and 299 transitions. [2024-11-11 16:01:08,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-11 16:01:08,031 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.59375) internal successors, (115), 29 states have internal predecessors, (115), 7 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) Word has length 76 [2024-11-11 16:01:08,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:01:08,032 INFO L225 Difference]: With dead ends: 236 [2024-11-11 16:01:08,032 INFO L226 Difference]: Without dead ends: 0 [2024-11-11 16:01:08,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=288, Invalid=2682, Unknown=0, NotChecked=0, Total=2970 [2024-11-11 16:01:08,034 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 16:01:08,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 363 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 16:01:08,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-11 16:01:08,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-11 16:01:08,035 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) [2024-11-11 16:01:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-11 16:01:08,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2024-11-11 16:01:08,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:01:08,035 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-11 16:01:08,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.59375) internal successors, (115), 29 states have internal predecessors, (115), 7 states have call successors, (12), 2 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-11 16:01:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-11 16:01:08,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-11 16:01:08,038 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-11 16:01:08,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-11 16:01:08,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:01:08,241 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:01:08,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-11 16:01:08,769 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-11 16:01:08,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 04:01:08 BoogieIcfgContainer [2024-11-11 16:01:08,799 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-11 16:01:08,799 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-11 16:01:08,799 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-11 16:01:08,799 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-11 16:01:08,800 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 04:00:54" (3/4) ... [2024-11-11 16:01:08,804 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-11 16:01:08,807 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2024-11-11 16:01:08,808 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-11 16:01:08,815 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-11 16:01:08,816 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-11 16:01:08,816 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-11 16:01:08,816 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-11 16:01:08,850 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((e == \old(e)) && (m <= 33554431)) && ((m == 1) || (m == \old(m)))) || (((((0 <= (((((long long) -1 * m) / 2) - 1) + 4294967295)) && (e <= \old(e))) && ((m % 2) == 0)) && (((((long long) -1 * m) / 2) - 1) <= 0)) && (m <= 33554431))) && (0 < \old(m))) [2024-11-11 16:01:08,850 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(e) <= e) && (0 < \old(m))) && (\old(m) != 1)) [2024-11-11 16:01:08,877 WARN L140 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(e) <= e) && (0 < \old(m))) && (\old(m) != 1)) [2024-11-11 16:01:08,878 WARN L140 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((e == \old(e)) && (m <= 33554431)) && ((m == 1) || (m == \old(m)))) || (((((0 <= (((((long long) -1 * m) / 2) - 1) + 4294967295)) && (e <= \old(e))) && ((m % 2) == 0)) && (((((long long) -1 * m) / 2) - 1) <= 0)) && (m <= 33554431))) && (0 < \old(m))) [2024-11-11 16:01:08,924 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-11 16:01:08,924 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-11 16:01:08,925 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-11 16:01:08,925 INFO L158 Benchmark]: Toolchain (without parser) took 15995.50ms. Allocated memory was 157.3MB in the beginning and 272.6MB in the end (delta: 115.3MB). Free memory was 110.1MB in the beginning and 124.3MB in the end (delta: -14.2MB). Peak memory consumption was 102.2MB. Max. memory is 16.1GB. [2024-11-11 16:01:08,925 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory is still 69.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 16:01:08,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.53ms. Allocated memory is still 157.3MB. Free memory was 110.1MB in the beginning and 94.8MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-11 16:01:08,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.76ms. Allocated memory is still 157.3MB. Free memory was 94.8MB in the beginning and 92.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-11 16:01:08,926 INFO L158 Benchmark]: Boogie Preprocessor took 78.02ms. Allocated memory is still 157.3MB. Free memory was 92.8MB in the beginning and 90.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-11 16:01:08,926 INFO L158 Benchmark]: RCFGBuilder took 540.96ms. Allocated memory is still 157.3MB. Free memory was 90.1MB in the beginning and 111.6MB in the end (delta: -21.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-11 16:01:08,926 INFO L158 Benchmark]: TraceAbstraction took 14788.34ms. Allocated memory was 157.3MB in the beginning and 272.6MB in the end (delta: 115.3MB). Free memory was 110.8MB in the beginning and 130.6MB in the end (delta: -19.8MB). Peak memory consumption was 145.6MB. Max. memory is 16.1GB. [2024-11-11 16:01:08,926 INFO L158 Benchmark]: Witness Printer took 125.52ms. Allocated memory is still 272.6MB. Free memory was 130.6MB in the beginning and 124.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-11 16:01:08,927 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory is still 69.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.53ms. Allocated memory is still 157.3MB. Free memory was 110.1MB in the beginning and 94.8MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.76ms. Allocated memory is still 157.3MB. Free memory was 94.8MB in the beginning and 92.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.02ms. Allocated memory is still 157.3MB. Free memory was 92.8MB in the beginning and 90.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 540.96ms. Allocated memory is still 157.3MB. Free memory was 90.1MB in the beginning and 111.6MB in the end (delta: -21.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 14788.34ms. Allocated memory was 157.3MB in the beginning and 272.6MB in the end (delta: 115.3MB). Free memory was 110.8MB in the beginning and 130.6MB in the end (delta: -19.8MB). Peak memory consumption was 145.6MB. Max. memory is 16.1GB. * Witness Printer took 125.52ms. Allocated memory is still 272.6MB. Free memory was 130.6MB in the beginning and 124.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. 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 3 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.2s, OverallIterations: 21, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 598 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 589 mSDsluCounter, 9230 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7412 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2149 IncrementalHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 1818 mSDtfsCounter, 2149 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1747 GetRequests, 1548 SyntacticMatches, 3 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=13, InterpolantAutomatonStates: 165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 208 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 2164 NumberOfCodeBlocks, 2164 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2585 ConstructedInterpolants, 0 QuantifiedInterpolants, 5089 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2992 ConjunctsInSsa, 181 ConjunctsInUnsatCore, 46 InterpolantComputations, 15 PerfectInterpolantSequences, 1234/1495 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: 37]: Loop Invariant Derived loop invariant: (((((e == \old(e)) && (m <= 33554431)) && ((m == 1) || (m == \old(m)))) || (((((0 <= (((((long long) -1 * m) / 2) - 1) + 4294967295)) && (e <= \old(e))) && ((m % 2) == 0)) && (((((long long) -1 * m) / 2) - 1) <= 0)) && (m <= 33554431))) && (0 < \old(m))) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((\old(e) <= e) && (0 < \old(m))) && (\old(m) != 1)) - ProcedureContractResult [Line: 24]: Procedure Contract for base2flt Derived contract for procedure base2flt. Ensures: ((\result == 0) || (0 < m)) - ProcedureContractResult [Line: 15]: 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! [2024-11-11 16:01:08,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE