./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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-regression/recHanoi03-1.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 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:33:33,375 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:33:33,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:33:33,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:33:33,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:33:33,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:33:33,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:33:33,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:33:33,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:33:33,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:33:33,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:33:33,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:33:33,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:33:33,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:33:33,489 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:33:33,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:33:33,489 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:33:33,489 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:33:33,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:33:33,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:33:33,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:33:33,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:33:33,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:33:33,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:33:33,495 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:33:33,495 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:33:33,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:33:33,495 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:33:33,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:33:33,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:33:33,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:33:33,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:33:33,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:33:33,496 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:33:33,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:33:33,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:33:33,497 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:33:33,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:33:33,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:33:33,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:33:33,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:33:33,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:33:33,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 [2024-11-18 09:33:33,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:33:33,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:33:33,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:33:33,816 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:33:33,816 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:33:33,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2024-11-18 09:33:35,339 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:33:35,520 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:33:35,521 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2024-11-18 09:33:35,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1626b4351/fa6d909e6e66436abcc538b186b79a2e/FLAGb39e126ae [2024-11-18 09:33:35,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1626b4351/fa6d909e6e66436abcc538b186b79a2e [2024-11-18 09:33:35,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:33:35,549 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:33:35,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:33:35,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:33:35,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:33:35,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b651fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35, skipping insertion in model container [2024-11-18 09:33:35,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,589 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:33:35,753 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-regression/recHanoi03-1.c[838,851] [2024-11-18 09:33:35,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:33:35,768 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:33:35,782 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-regression/recHanoi03-1.c[838,851] [2024-11-18 09:33:35,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:33:35,798 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:33:35,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35 WrapperNode [2024-11-18 09:33:35,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:33:35,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:33:35,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:33:35,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:33:35,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,825 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-18 09:33:35,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:33:35,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:33:35,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:33:35,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:33:35,834 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,836 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,849 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]. [2024-11-18 09:33:35,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,852 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:33:35,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:33:35,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:33:35,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:33:35,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (1/1) ... [2024-11-18 09:33:35,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:33:35,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:35,889 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) [2024-11-18 09:33:35,899 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 [2024-11-18 09:33:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:33:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2024-11-18 09:33:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2024-11-18 09:33:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:33:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:33:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:33:36,023 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:33:36,024 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:33:36,159 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-18 09:33:36,159 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:33:36,169 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:33:36,169 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 09:33:36,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:33:36 BoogieIcfgContainer [2024-11-18 09:33:36,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:33:36,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:33:36,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:33:36,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:33:36,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:33:35" (1/3) ... [2024-11-18 09:33:36,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281a878b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:33:36, skipping insertion in model container [2024-11-18 09:33:36,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:35" (2/3) ... [2024-11-18 09:33:36,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281a878b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:33:36, skipping insertion in model container [2024-11-18 09:33:36,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:33:36" (3/3) ... [2024-11-18 09:33:36,177 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2024-11-18 09:33:36,192 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:33:36,192 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:33:36,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:33:36,244 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;@f5c0e76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:33:36,244 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:33:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 09:33:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-18 09:33:36,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:36,254 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:36,254 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:36,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:36,258 INFO L85 PathProgramCache]: Analyzing trace with hash 176773050, now seen corresponding path program 1 times [2024-11-18 09:33:36,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:36,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93463668] [2024-11-18 09:33:36,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:36,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:33:36,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:36,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93463668] [2024-11-18 09:33:36,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93463668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:36,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:33:36,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 09:33:36,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678365652] [2024-11-18 09:33:36,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:36,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 09:33:36,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:36,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 09:33:36,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:33:36,553 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 09:33:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:36,588 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2024-11-18 09:33:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 09:33:36,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-18 09:33:36,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:36,598 INFO L225 Difference]: With dead ends: 31 [2024-11-18 09:33:36,599 INFO L226 Difference]: Without dead ends: 22 [2024-11-18 09:33:36,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:33:36,604 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:36,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:33:36,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-18 09:33:36,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-18 09:33:36,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:36,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-18 09:33:36,640 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2024-11-18 09:33:36,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:36,640 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-18 09:33:36,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 09:33:36,640 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-18 09:33:36,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-18 09:33:36,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:36,642 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:36,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:33:36,643 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:36,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:36,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1929421739, now seen corresponding path program 1 times [2024-11-18 09:33:36,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:36,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518065578] [2024-11-18 09:33:36,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:36,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:33:36,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:33:36,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518065578] [2024-11-18 09:33:36,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518065578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:36,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:33:36,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:33:36,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684666278] [2024-11-18 09:33:36,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:36,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:33:36,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:33:36,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:33:36,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:33:36,738 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 09:33:36,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:36,748 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-11-18 09:33:36,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:33:36,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-18 09:33:36,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:36,750 INFO L225 Difference]: With dead ends: 29 [2024-11-18 09:33:36,750 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 09:33:36,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:33:36,751 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:36,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:33:36,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 09:33:36,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-18 09:33:36,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 09:33:36,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-18 09:33:36,761 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2024-11-18 09:33:36,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:36,761 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-18 09:33:36,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 09:33:36,762 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-18 09:33:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 09:33:36,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:36,763 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:36,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:33:36,764 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:36,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:36,765 INFO L85 PathProgramCache]: Analyzing trace with hash 319247983, now seen corresponding path program 1 times [2024-11-18 09:33:36,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:33:36,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402460800] [2024-11-18 09:33:36,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:36,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:33:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 09:33:36,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-18 09:33:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 09:33:36,845 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-18 09:33:36,846 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-18 09:33:36,847 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 09:33:36,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:33:36,851 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-18 09:33:36,867 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 09:33:36,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:33:36 BoogieIcfgContainer [2024-11-18 09:33:36,873 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 09:33:36,874 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 09:33:36,874 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 09:33:36,874 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 09:33:36,875 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:33:36" (3/4) ... [2024-11-18 09:33:36,877 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-18 09:33:36,878 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 09:33:36,878 INFO L158 Benchmark]: Toolchain (without parser) took 1328.79ms. Allocated memory was 157.3MB in the beginning and 211.8MB in the end (delta: 54.5MB). Free memory was 84.2MB in the beginning and 177.9MB in the end (delta: -93.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 09:33:36,878 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 157.3MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 09:33:36,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.24ms. Allocated memory is still 157.3MB. Free memory was 84.1MB in the beginning and 72.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 09:33:36,880 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.43ms. Allocated memory is still 157.3MB. Free memory was 72.0MB in the beginning and 70.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 09:33:36,881 INFO L158 Benchmark]: Boogie Preprocessor took 31.69ms. Allocated memory is still 157.3MB. Free memory was 70.6MB in the beginning and 69.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 09:33:36,884 INFO L158 Benchmark]: RCFGBuilder took 311.33ms. Allocated memory was 157.3MB in the beginning and 211.8MB in the end (delta: 54.5MB). Free memory was 69.0MB in the beginning and 178.4MB in the end (delta: -109.4MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2024-11-18 09:33:36,884 INFO L158 Benchmark]: TraceAbstraction took 701.74ms. Allocated memory is still 211.8MB. Free memory was 177.4MB in the beginning and 177.9MB in the end (delta: -510.0kB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2024-11-18 09:33:36,884 INFO L158 Benchmark]: Witness Printer took 3.74ms. Allocated memory is still 211.8MB. Free memory is still 177.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 09:33:36,885 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 157.3MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.24ms. Allocated memory is still 157.3MB. Free memory was 84.1MB in the beginning and 72.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.43ms. Allocated memory is still 157.3MB. Free memory was 72.0MB in the beginning and 70.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.69ms. Allocated memory is still 157.3MB. Free memory was 70.6MB in the beginning and 69.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.33ms. Allocated memory was 157.3MB in the beginning and 211.8MB in the end (delta: 54.5MB). Free memory was 69.0MB in the beginning and 178.4MB in the end (delta: -109.4MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * TraceAbstraction took 701.74ms. Allocated memory is still 211.8MB. Free memory was 177.4MB in the beginning and 177.9MB in the end (delta: -510.0kB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * Witness Printer took 3.74ms. Allocated memory is still 211.8MB. Free memory is still 177.9MB. There was no memory consumed. 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 - UnprovableResult [Line: 36]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 33. Possible FailurePath: [L27] int n = __VERIFIER_nondet_int(); [L28] COND FALSE !(n < 1) VAL [n=1] [L31] CALL, EXPR hanoi(n) VAL [\old(n)=1] [L19] COND TRUE n == 1 [L20] return 1; VAL [\old(n)=1, \result=1] [L31] RET, EXPR hanoi(n) VAL [n=1] [L31] unsigned result = hanoi(n); [L33] result+1>0 && result+1 == 1<0 && result+1 == 1<0 && result+1 == 1< 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 -> 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 [2024-11-18 09:33:39,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:33:39,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:33:39,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:33:39,591 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:33:39,595 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:33:39,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2024-11-18 09:33:41,147 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:33:41,304 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:33:41,304 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2024-11-18 09:33:41,310 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95a843322/c3a1987c58b7447fa6ab43f568563b94/FLAG06a5b4737 [2024-11-18 09:33:41,320 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95a843322/c3a1987c58b7447fa6ab43f568563b94 [2024-11-18 09:33:41,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:33:41,323 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:33:41,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:33:41,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:33:41,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:33:41,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d514aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41, skipping insertion in model container [2024-11-18 09:33:41,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,346 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:33:41,461 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-regression/recHanoi03-1.c[838,851] [2024-11-18 09:33:41,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:33:41,492 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:33:41,507 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-regression/recHanoi03-1.c[838,851] [2024-11-18 09:33:41,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:33:41,520 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:33:41,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41 WrapperNode [2024-11-18 09:33:41,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:33:41,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:33:41,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:33:41,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:33:41,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,533 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,542 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2024-11-18 09:33:41,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:33:41,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:33:41,544 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:33:41,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:33:41,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,552 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,561 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]. [2024-11-18 09:33:41,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,562 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:33:41,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:33:41,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:33:41,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:33:41,576 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (1/1) ... [2024-11-18 09:33:41,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:33:41,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:33:41,619 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) [2024-11-18 09:33:41,625 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 [2024-11-18 09:33:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:33:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2024-11-18 09:33:41,662 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2024-11-18 09:33:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:33:41,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:33:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-18 09:33:41,722 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:33:41,725 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:33:41,835 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-18 09:33:41,836 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:33:41,843 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:33:41,843 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 09:33:41,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:33:41 BoogieIcfgContainer [2024-11-18 09:33:41,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:33:41,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:33:41,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:33:41,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:33:41,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:33:41" (1/3) ... [2024-11-18 09:33:41,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6ec83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:33:41, skipping insertion in model container [2024-11-18 09:33:41,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:33:41" (2/3) ... [2024-11-18 09:33:41,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6ec83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:33:41, skipping insertion in model container [2024-11-18 09:33:41,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:33:41" (3/3) ... [2024-11-18 09:33:41,849 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2024-11-18 09:33:41,861 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:33:41,862 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:33:41,904 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:33:41,909 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;@63f99c3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:33:41,909 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:33:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 09:33:41,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 09:33:41,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:41,917 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:41,918 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:41,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:41,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2087939196, now seen corresponding path program 1 times [2024-11-18 09:33:41,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 09:33:41,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612584688] [2024-11-18 09:33:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:41,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:41,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 09:33:41,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 09:33:41,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-18 09:33:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:41,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:33:41,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:33:42,178 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:33:42,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 09:33:42,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612584688] [2024-11-18 09:33:42,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612584688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:33:42,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:33:42,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 09:33:42,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932178008] [2024-11-18 09:33:42,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:33:42,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:33:42,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 09:33:42,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:33:42,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:33:42,206 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 09:33:42,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:42,291 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-18 09:33:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 09:33:42,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-18 09:33:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:42,299 INFO L225 Difference]: With dead ends: 26 [2024-11-18 09:33:42,300 INFO L226 Difference]: Without dead ends: 16 [2024-11-18 09:33:42,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:33:42,306 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:42,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 45 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:33:42,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-18 09:33:42,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-18 09:33:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 09:33:42,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-11-18 09:33:42,338 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2024-11-18 09:33:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:42,339 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-11-18 09:33:42,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 09:33:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-11-18 09:33:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 09:33:42,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:42,341 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:42,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-18 09:33:42,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:42,543 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:42,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2053638732, now seen corresponding path program 1 times [2024-11-18 09:33:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 09:33:42,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332666897] [2024-11-18 09:33:42,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:33:42,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:42,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 09:33:42,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 09:33:42,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-18 09:33:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:33:42,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:33:42,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:33:42,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:33:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:33:43,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 09:33:43,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332666897] [2024-11-18 09:33:43,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332666897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:33:43,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 09:33:43,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-18 09:33:43,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955678661] [2024-11-18 09:33:43,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 09:33:43,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 09:33:43,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 09:33:43,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 09:33:43,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:33:43,207 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 09:33:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:43,419 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-11-18 09:33:43,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:33:43,420 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17 [2024-11-18 09:33:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:43,421 INFO L225 Difference]: With dead ends: 28 [2024-11-18 09:33:43,421 INFO L226 Difference]: Without dead ends: 22 [2024-11-18 09:33:43,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-18 09:33:43,422 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:43,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 59 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:33:43,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-18 09:33:43,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-18 09:33:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 09:33:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-11-18 09:33:43,427 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2024-11-18 09:33:43,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:43,428 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-11-18 09:33:43,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 09:33:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-11-18 09:33:43,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:33:43,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:43,429 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:43,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-18 09:33:43,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:43,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:43,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:43,631 INFO L85 PathProgramCache]: Analyzing trace with hash -491101836, now seen corresponding path program 2 times [2024-11-18 09:33:43,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 09:33:43,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109795413] [2024-11-18 09:33:43,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:33:43,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 09:33:43,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 09:33:43,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-18 09:33:43,705 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:33:43,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:33:43,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 09:33:43,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:33:43,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:33:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 09:33:44,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 09:33:44,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109795413] [2024-11-18 09:33:44,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109795413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:33:44,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 09:33:44,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2024-11-18 09:33:44,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349745438] [2024-11-18 09:33:44,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 09:33:44,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 09:33:44,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 09:33:44,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 09:33:44,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2024-11-18 09:33:44,648 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-18 09:33:45,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:45,046 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2024-11-18 09:33:45,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 09:33:45,047 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 29 [2024-11-18 09:33:45,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:45,048 INFO L225 Difference]: With dead ends: 34 [2024-11-18 09:33:45,048 INFO L226 Difference]: Without dead ends: 28 [2024-11-18 09:33:45,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=1089, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 09:33:45,049 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:45,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 122 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:33:45,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-18 09:33:45,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-18 09:33:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:33:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-11-18 09:33:45,055 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 29 [2024-11-18 09:33:45,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:45,055 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-11-18 09:33:45,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-18 09:33:45,055 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-11-18 09:33:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-18 09:33:45,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:45,056 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:45,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-18 09:33:45,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:45,258 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:45,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash -492655308, now seen corresponding path program 3 times [2024-11-18 09:33:45,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 09:33:45,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475028557] [2024-11-18 09:33:45,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:33:45,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:45,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 09:33:45,262 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 09:33:45,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-18 09:33:45,307 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 09:33:45,307 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:33:45,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-18 09:33:45,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-18 09:33:45,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:33:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 09:33:47,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 09:33:47,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475028557] [2024-11-18 09:33:47,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475028557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:33:47,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 09:33:47,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 36 [2024-11-18 09:33:47,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558078754] [2024-11-18 09:33:47,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 09:33:47,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-18 09:33:47,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 09:33:47,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-18 09:33:47,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 09:33:47,429 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 12 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-18 09:33:48,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:48,243 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-11-18 09:33:48,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 09:33:48,244 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 12 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) Word has length 41 [2024-11-18 09:33:48,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:48,249 INFO L225 Difference]: With dead ends: 40 [2024-11-18 09:33:48,249 INFO L226 Difference]: Without dead ends: 34 [2024-11-18 09:33:48,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=277, Invalid=2173, Unknown=0, NotChecked=0, Total=2450 [2024-11-18 09:33:48,251 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 64 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:48,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 180 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:33:48,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-18 09:33:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-18 09:33:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 09:33:48,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2024-11-18 09:33:48,258 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 41 [2024-11-18 09:33:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:48,259 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2024-11-18 09:33:48,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 12 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-18 09:33:48,259 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2024-11-18 09:33:48,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 09:33:48,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:48,260 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:48,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-18 09:33:48,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:48,464 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:48,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:48,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1906255628, now seen corresponding path program 4 times [2024-11-18 09:33:48,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 09:33:48,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918111747] [2024-11-18 09:33:48,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:33:48,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:48,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 09:33:48,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 09:33:48,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-18 09:33:48,504 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:33:48,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:33:48,511 WARN L253 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-18 09:33:48,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-18 09:33:48,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:33:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 09:33:51,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 09:33:51,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918111747] [2024-11-18 09:33:51,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918111747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:33:51,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 09:33:51,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27] total 46 [2024-11-18 09:33:51,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933366441] [2024-11-18 09:33:51,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 09:33:51,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-18 09:33:51,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 09:33:51,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-18 09:33:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1913, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 09:33:51,385 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 30 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (16), 16 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-18 09:33:52,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:52,400 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2024-11-18 09:33:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 09:33:52,402 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 30 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (16), 16 states have call predecessors, (16), 10 states have call successors, (16) Word has length 53 [2024-11-18 09:33:52,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:52,402 INFO L225 Difference]: With dead ends: 46 [2024-11-18 09:33:52,402 INFO L226 Difference]: Without dead ends: 40 [2024-11-18 09:33:52,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=399, Invalid=3633, Unknown=0, NotChecked=0, Total=4032 [2024-11-18 09:33:52,404 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 86 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:52,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 326 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 09:33:52,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-18 09:33:52,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-18 09:33:52,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 09:33:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-11-18 09:33:52,415 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 53 [2024-11-18 09:33:52,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:52,415 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-11-18 09:33:52,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 30 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (16), 16 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-18 09:33:52,415 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-11-18 09:33:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 09:33:52,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:52,416 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:52,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-18 09:33:52,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:52,618 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:52,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:52,618 INFO L85 PathProgramCache]: Analyzing trace with hash 788849844, now seen corresponding path program 5 times [2024-11-18 09:33:52,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 09:33:52,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636294385] [2024-11-18 09:33:52,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:33:52,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:52,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 09:33:52,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 09:33:52,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-18 09:33:52,677 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-18 09:33:52,677 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:33:52,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-18 09:33:52,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-18 09:33:53,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:33:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-18 09:33:56,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 09:33:56,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636294385] [2024-11-18 09:33:56,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636294385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:33:56,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 09:33:56,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33] total 56 [2024-11-18 09:33:56,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419256782] [2024-11-18 09:33:56,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 09:33:56,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-18 09:33:56,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 09:33:56,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-18 09:33:56,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2885, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 09:33:56,329 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 36 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 20 states have return successors, (20), 20 states have call predecessors, (20), 12 states have call successors, (20) [2024-11-18 09:33:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:33:57,738 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2024-11-18 09:33:57,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 09:33:57,739 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 36 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 20 states have return successors, (20), 20 states have call predecessors, (20), 12 states have call successors, (20) Word has length 65 [2024-11-18 09:33:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:33:57,740 INFO L225 Difference]: With dead ends: 52 [2024-11-18 09:33:57,740 INFO L226 Difference]: Without dead ends: 46 [2024-11-18 09:33:57,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=537, Invalid=5469, Unknown=0, NotChecked=0, Total=6006 [2024-11-18 09:33:57,747 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 106 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 09:33:57,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 438 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 09:33:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-18 09:33:57,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-18 09:33:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 09:33:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2024-11-18 09:33:57,762 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 65 [2024-11-18 09:33:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:33:57,763 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2024-11-18 09:33:57,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 36 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 20 states have return successors, (20), 20 states have call predecessors, (20), 12 states have call successors, (20) [2024-11-18 09:33:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2024-11-18 09:33:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 09:33:57,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:33:57,765 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:33:57,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-18 09:33:57,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:57,972 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:33:57,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:33:57,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1302253684, now seen corresponding path program 6 times [2024-11-18 09:33:57,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 09:33:57,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358089391] [2024-11-18 09:33:57,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:33:57,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:33:57,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 09:33:57,977 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 09:33:57,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-18 09:33:58,026 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-18 09:33:58,026 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:33:58,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-18 09:33:58,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:33:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-18 09:33:58,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:34:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 09:34:02,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 09:34:02,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358089391] [2024-11-18 09:34:02,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358089391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:34:02,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 09:34:02,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 39] total 66 [2024-11-18 09:34:02,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970352674] [2024-11-18 09:34:02,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 09:34:02,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-18 09:34:02,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 09:34:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-18 09:34:02,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=4057, Unknown=0, NotChecked=0, Total=4290 [2024-11-18 09:34:02,511 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 42 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) [2024-11-18 09:34:04,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:34:04,571 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2024-11-18 09:34:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-18 09:34:04,572 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 42 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) Word has length 77 [2024-11-18 09:34:04,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:34:04,575 INFO L225 Difference]: With dead ends: 58 [2024-11-18 09:34:04,575 INFO L226 Difference]: Without dead ends: 52 [2024-11-18 09:34:04,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=691, Invalid=7681, Unknown=0, NotChecked=0, Total=8372 [2024-11-18 09:34:04,584 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 318 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 09:34:04,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 586 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 09:34:04,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-18 09:34:04,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-18 09:34:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 09:34:04,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2024-11-18 09:34:04,608 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 77 [2024-11-18 09:34:04,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:34:04,609 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-11-18 09:34:04,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 42 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) [2024-11-18 09:34:04,613 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2024-11-18 09:34:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-18 09:34:04,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:34:04,614 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:34:04,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-18 09:34:04,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:34:04,816 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:34:04,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:34:04,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1287742412, now seen corresponding path program 7 times [2024-11-18 09:34:04,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 09:34:04,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986054706] [2024-11-18 09:34:04,817 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:34:04,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:34:04,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 09:34:04,824 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 09:34:04,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-18 09:34:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:34:04,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-18 09:34:04,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:34:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-18 09:34:05,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:34:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-18 09:34:11,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 09:34:11,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986054706] [2024-11-18 09:34:11,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986054706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:34:11,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 09:34:11,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 45] total 76 [2024-11-18 09:34:11,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582336933] [2024-11-18 09:34:11,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 09:34:11,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-18 09:34:11,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 09:34:11,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-18 09:34:11,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=5429, Unknown=0, NotChecked=0, Total=5700 [2024-11-18 09:34:11,371 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 48 states have internal predecessors, (94), 16 states have call successors, (16), 1 states have call predecessors, (16), 28 states have return successors, (28), 28 states have call predecessors, (28), 16 states have call successors, (28) [2024-11-18 09:34:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:34:13,596 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2024-11-18 09:34:13,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-18 09:34:13,597 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 48 states have internal predecessors, (94), 16 states have call successors, (16), 1 states have call predecessors, (16), 28 states have return successors, (28), 28 states have call predecessors, (28), 16 states have call successors, (28) Word has length 89 [2024-11-18 09:34:13,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:34:13,598 INFO L225 Difference]: With dead ends: 64 [2024-11-18 09:34:13,598 INFO L226 Difference]: Without dead ends: 58 [2024-11-18 09:34:13,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1455 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=861, Invalid=10269, Unknown=0, NotChecked=0, Total=11130 [2024-11-18 09:34:13,605 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 172 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 09:34:13,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 732 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 09:34:13,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-18 09:34:13,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-18 09:34:13,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 40 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 09:34:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2024-11-18 09:34:13,621 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 89 [2024-11-18 09:34:13,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:34:13,621 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2024-11-18 09:34:13,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 48 states have internal predecessors, (94), 16 states have call successors, (16), 1 states have call predecessors, (16), 28 states have return successors, (28), 28 states have call predecessors, (28), 16 states have call successors, (28) [2024-11-18 09:34:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2024-11-18 09:34:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 09:34:13,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:34:13,623 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:34:13,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-18 09:34:13,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:34:13,827 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:34:13,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:34:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1760839668, now seen corresponding path program 8 times [2024-11-18 09:34:13,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 09:34:13,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014031244] [2024-11-18 09:34:13,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:34:13,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:34:13,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 09:34:13,831 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 09:34:13,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-18 09:34:13,934 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:34:13,934 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:34:13,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-18 09:34:13,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:34:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-18 09:34:14,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:34:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-18 09:34:21,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 09:34:21,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014031244] [2024-11-18 09:34:21,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014031244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:34:21,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 09:34:21,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 51] total 86 [2024-11-18 09:34:21,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021386555] [2024-11-18 09:34:21,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 09:34:21,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-18 09:34:21,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 09:34:21,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-18 09:34:21,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=7001, Unknown=0, NotChecked=0, Total=7310 [2024-11-18 09:34:21,614 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 54 states have internal predecessors, (106), 18 states have call successors, (18), 1 states have call predecessors, (18), 32 states have return successors, (32), 32 states have call predecessors, (32), 18 states have call successors, (32) [2024-11-18 09:34:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:34:24,708 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2024-11-18 09:34:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-18 09:34:24,709 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 54 states have internal predecessors, (106), 18 states have call successors, (18), 1 states have call predecessors, (18), 32 states have return successors, (32), 32 states have call predecessors, (32), 18 states have call successors, (32) Word has length 101 [2024-11-18 09:34:24,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:34:24,711 INFO L225 Difference]: With dead ends: 70 [2024-11-18 09:34:24,711 INFO L226 Difference]: Without dead ends: 64 [2024-11-18 09:34:24,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1047, Invalid=13233, Unknown=0, NotChecked=0, Total=14280 [2024-11-18 09:34:24,716 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 358 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:34:24,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 919 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 09:34:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-18 09:34:24,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-18 09:34:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 44 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (19), 18 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 09:34:24,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-11-18 09:34:24,726 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 101 [2024-11-18 09:34:24,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:34:24,726 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-11-18 09:34:24,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 54 states have internal predecessors, (106), 18 states have call successors, (18), 1 states have call predecessors, (18), 32 states have return successors, (32), 32 states have call predecessors, (32), 18 states have call successors, (32) [2024-11-18 09:34:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-11-18 09:34:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 09:34:24,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:34:24,729 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:34:24,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-18 09:34:24,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:34:24,930 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:34:24,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:34:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1211116620, now seen corresponding path program 9 times [2024-11-18 09:34:24,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 09:34:24,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958246985] [2024-11-18 09:34:24,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:34:24,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:34:24,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 09:34:24,932 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 09:34:24,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-18 09:34:25,056 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-18 09:34:25,057 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:34:25,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-18 09:34:25,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:34:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-11-18 09:34:25,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:34:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-18 09:34:35,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 09:34:35,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958246985] [2024-11-18 09:34:35,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958246985] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:34:35,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 09:34:35,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 57] total 96 [2024-11-18 09:34:35,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428899911] [2024-11-18 09:34:35,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 09:34:35,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-18 09:34:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 09:34:35,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-18 09:34:35,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=8773, Unknown=0, NotChecked=0, Total=9120 [2024-11-18 09:34:35,861 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 60 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 36 states have return successors, (36), 36 states have call predecessors, (36), 20 states have call successors, (36) [2024-11-18 09:34:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:34:40,163 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2024-11-18 09:34:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-18 09:34:40,164 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 60 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 36 states have return successors, (36), 36 states have call predecessors, (36), 20 states have call successors, (36) Word has length 113 [2024-11-18 09:34:40,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:34:40,164 INFO L225 Difference]: With dead ends: 76 [2024-11-18 09:34:40,165 INFO L226 Difference]: Without dead ends: 70 [2024-11-18 09:34:40,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2337 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1249, Invalid=16573, Unknown=0, NotChecked=0, Total=17822 [2024-11-18 09:34:40,166 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 402 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:34:40,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1122 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 09:34:40,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-18 09:34:40,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-18 09:34:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 48 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (21), 20 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-18 09:34:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2024-11-18 09:34:40,177 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 113 [2024-11-18 09:34:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:34:40,177 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2024-11-18 09:34:40,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 60 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 36 states have return successors, (36), 36 states have call predecessors, (36), 20 states have call successors, (36) [2024-11-18 09:34:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2024-11-18 09:34:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 09:34:40,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:34:40,179 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:34:40,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-11-18 09:34:40,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:34:40,384 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:34:40,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:34:40,385 INFO L85 PathProgramCache]: Analyzing trace with hash 685850484, now seen corresponding path program 10 times [2024-11-18 09:34:40,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 09:34:40,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172339053] [2024-11-18 09:34:40,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:34:40,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:34:40,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 09:34:40,388 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 09:34:40,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-18 09:34:40,463 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:34:40,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:34:40,469 WARN L253 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-18 09:34:40,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:34:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-11-18 09:34:41,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:34:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-18 09:34:53,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-18 09:34:53,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172339053] [2024-11-18 09:34:53,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172339053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:34:53,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 09:34:53,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 63] total 106 [2024-11-18 09:34:53,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852301081] [2024-11-18 09:34:53,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 09:34:53,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-11-18 09:34:53,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-18 09:34:53,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-11-18 09:34:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=10745, Unknown=0, NotChecked=0, Total=11130 [2024-11-18 09:34:53,478 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 66 states have internal predecessors, (130), 22 states have call successors, (22), 1 states have call predecessors, (22), 40 states have return successors, (40), 40 states have call predecessors, (40), 22 states have call successors, (40) [2024-11-18 09:34:57,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:34:57,476 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2024-11-18 09:34:57,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-18 09:34:57,477 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 66 states have internal predecessors, (130), 22 states have call successors, (22), 1 states have call predecessors, (22), 40 states have return successors, (40), 40 states have call predecessors, (40), 22 states have call successors, (40) Word has length 125 [2024-11-18 09:34:57,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:34:57,480 INFO L225 Difference]: With dead ends: 82 [2024-11-18 09:34:57,480 INFO L226 Difference]: Without dead ends: 76 [2024-11-18 09:34:57,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2856 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1467, Invalid=20289, Unknown=0, NotChecked=0, Total=21756 [2024-11-18 09:34:57,486 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 806 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 2688 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:34:57,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1450 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2688 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 09:34:57,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-18 09:34:57,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-18 09:34:57,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 52 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (23), 22 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-18 09:34:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2024-11-18 09:34:57,509 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 125 [2024-11-18 09:34:57,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:34:57,509 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2024-11-18 09:34:57,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 66 states have internal predecessors, (130), 22 states have call successors, (22), 1 states have call predecessors, (22), 40 states have return successors, (40), 40 states have call predecessors, (40), 22 states have call successors, (40) [2024-11-18 09:34:57,515 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2024-11-18 09:34:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-18 09:34:57,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:34:57,516 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:34:57,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-18 09:34:57,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:34:57,717 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:34:57,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:34:57,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2059891916, now seen corresponding path program 11 times [2024-11-18 09:34:57,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-18 09:34:57,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356835532] [2024-11-18 09:34:57,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:34:57,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-18 09:34:57,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-18 09:34:57,721 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-18 09:34:57,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-18 09:34:57,927 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-18 09:34:57,928 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:34:57,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-18 09:34:57,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:34:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-11-18 09:34:59,175 INFO L311 TraceCheckSpWp]: Computing backward predicates...