/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 08:40:00,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 08:40:00,783 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 08:40:00,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 08:40:00,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 08:40:00,813 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 08:40:00,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 08:40:00,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 08:40:00,815 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 08:40:00,818 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 08:40:00,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 08:40:00,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 08:40:00,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 08:40:00,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 08:40:00,819 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 08:40:00,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 08:40:00,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 08:40:00,820 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 08:40:00,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 08:40:00,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 08:40:00,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 08:40:00,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 08:40:00,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 08:40:00,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 08:40:00,821 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 08:40:00,821 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 08:40:00,821 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 08:40:00,822 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 08:40:00,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 08:40:00,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 08:40:00,823 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 08:40:00,823 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 08:40:00,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:40:00,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 08:40:00,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 08:40:00,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 08:40:00,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 08:40:00,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 08:40:00,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 08:40:00,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 08:40:00,824 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 08:40:00,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 08:40:00,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 08:40:00,824 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 08:40:01,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 08:40:01,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 08:40:01,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 08:40:01,092 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 08:40:01,092 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 08:40:01,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i [2023-12-19 08:40:02,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 08:40:02,414 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 08:40:02,415 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i [2023-12-19 08:40:02,422 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b49593e7/21b9d7fc24094719a11f6d1fe66a1048/FLAGd2ad29eb8 [2023-12-19 08:40:02,434 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b49593e7/21b9d7fc24094719a11f6d1fe66a1048 [2023-12-19 08:40:02,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 08:40:02,437 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 08:40:02,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 08:40:02,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 08:40:02,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 08:40:02,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5379a489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02, skipping insertion in model container [2023-12-19 08:40:02,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,477 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 08:40:02,606 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i[919,932] [2023-12-19 08:40:02,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:40:02,702 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 08:40:02,712 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i[919,932] [2023-12-19 08:40:02,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:40:02,772 INFO L206 MainTranslator]: Completed translation [2023-12-19 08:40:02,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02 WrapperNode [2023-12-19 08:40:02,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 08:40:02,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 08:40:02,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 08:40:02,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 08:40:02,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,797 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,831 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 248 [2023-12-19 08:40:02,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 08:40:02,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 08:40:02,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 08:40:02,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 08:40:02,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,863 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]. [2023-12-19 08:40:02,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 08:40:02,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 08:40:02,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 08:40:02,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 08:40:02,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (1/1) ... [2023-12-19 08:40:02,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:40:02,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:40:02,917 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) [2023-12-19 08:40:02,921 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 [2023-12-19 08:40:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 08:40:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 08:40:02,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 08:40:02,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 08:40:02,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 08:40:02,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 08:40:03,021 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 08:40:03,023 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 08:40:03,381 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 08:40:03,401 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 08:40:03,402 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 08:40:03,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:40:03 BoogieIcfgContainer [2023-12-19 08:40:03,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 08:40:03,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 08:40:03,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 08:40:03,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 08:40:03,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:40:02" (1/3) ... [2023-12-19 08:40:03,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3926c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:40:03, skipping insertion in model container [2023-12-19 08:40:03,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:40:02" (2/3) ... [2023-12-19 08:40:03,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3926c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:40:03, skipping insertion in model container [2023-12-19 08:40:03,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:40:03" (3/3) ... [2023-12-19 08:40:03,407 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-34.i [2023-12-19 08:40:03,440 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 08:40:03,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 08:40:03,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 08:40:03,502 INFO L357 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, mHoare=true, 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;@10679f4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 08:40:03,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 08:40:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 64 states have internal predecessors, (99), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 08:40:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 08:40:03,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:40:03,522 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:40:03,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:40:03,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:40:03,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1674842438, now seen corresponding path program 1 times [2023-12-19 08:40:03,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:40:03,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401665145] [2023-12-19 08:40:03,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:03,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:40:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:40:03,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:40:03,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401665145] [2023-12-19 08:40:03,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 08:40:03,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112604400] [2023-12-19 08:40:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:03,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:03,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:40:03,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:40:03,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 08:40:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:40:03,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 08:40:03,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:40:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2023-12-19 08:40:03,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:40:03,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112604400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:40:03,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:40:03,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 08:40:03,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044929232] [2023-12-19 08:40:03,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:40:03,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 08:40:03,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:40:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 08:40:03,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 08:40:03,995 INFO L87 Difference]: Start difference. First operand has 93 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 64 states have internal predecessors, (99), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 08:40:04,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:40:04,025 INFO L93 Difference]: Finished difference Result 183 states and 331 transitions. [2023-12-19 08:40:04,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 08:40:04,027 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 175 [2023-12-19 08:40:04,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:40:04,033 INFO L225 Difference]: With dead ends: 183 [2023-12-19 08:40:04,033 INFO L226 Difference]: Without dead ends: 91 [2023-12-19 08:40:04,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 08:40:04,037 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 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 [2023-12-19 08:40:04,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:40:04,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-19 08:40:04,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-19 08:40:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.5161290322580645) internal successors, (94), 62 states have internal predecessors, (94), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 08:40:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 148 transitions. [2023-12-19 08:40:04,069 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 148 transitions. Word has length 175 [2023-12-19 08:40:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:40:04,069 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 148 transitions. [2023-12-19 08:40:04,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 08:40:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 148 transitions. [2023-12-19 08:40:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 08:40:04,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:40:04,072 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:40:04,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 08:40:04,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 08:40:04,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:40:04,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:40:04,283 INFO L85 PathProgramCache]: Analyzing trace with hash -826034316, now seen corresponding path program 1 times [2023-12-19 08:40:04,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:40:04,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155422693] [2023-12-19 08:40:04,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:04,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:40:04,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:40:04,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851228715] [2023-12-19 08:40:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:04,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:04,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:40:04,382 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:40:04,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 08:40:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:40:04,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 08:40:04,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:40:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:40:04,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:40:04,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:40:04,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155422693] [2023-12-19 08:40:04,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:40:04,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851228715] [2023-12-19 08:40:04,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851228715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:40:04,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:40:04,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 08:40:04,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764632515] [2023-12-19 08:40:04,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:40:04,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 08:40:04,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:40:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 08:40:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:40:04,772 INFO L87 Difference]: Start difference. First operand 91 states and 148 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:40:05,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:40:05,110 INFO L93 Difference]: Finished difference Result 282 states and 460 transitions. [2023-12-19 08:40:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 08:40:05,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2023-12-19 08:40:05,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:40:05,117 INFO L225 Difference]: With dead ends: 282 [2023-12-19 08:40:05,117 INFO L226 Difference]: Without dead ends: 192 [2023-12-19 08:40:05,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 08:40:05,122 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 201 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:40:05,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 496 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 08:40:05,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-19 08:40:05,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 93. [2023-12-19 08:40:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.5) internal successors, (96), 64 states have internal predecessors, (96), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 08:40:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 150 transitions. [2023-12-19 08:40:05,150 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 150 transitions. Word has length 175 [2023-12-19 08:40:05,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:40:05,152 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 150 transitions. [2023-12-19 08:40:05,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:40:05,152 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 150 transitions. [2023-12-19 08:40:05,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 08:40:05,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:40:05,158 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:40:05,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 08:40:05,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 08:40:05,365 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:40:05,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:40:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash 508868654, now seen corresponding path program 1 times [2023-12-19 08:40:05,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:40:05,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236239305] [2023-12-19 08:40:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:05,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:40:05,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:40:05,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806219901] [2023-12-19 08:40:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:05,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:05,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:40:05,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:40:05,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 08:40:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:40:05,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 08:40:05,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:40:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:40:05,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:40:05,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:40:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236239305] [2023-12-19 08:40:05,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:40:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806219901] [2023-12-19 08:40:05,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806219901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:40:05,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:40:05,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 08:40:05,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094782110] [2023-12-19 08:40:05,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:40:05,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 08:40:05,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:40:05,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 08:40:05,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:40:05,989 INFO L87 Difference]: Start difference. First operand 93 states and 150 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:40:06,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:40:06,045 INFO L93 Difference]: Finished difference Result 316 states and 511 transitions. [2023-12-19 08:40:06,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 08:40:06,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2023-12-19 08:40:06,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:40:06,050 INFO L225 Difference]: With dead ends: 316 [2023-12-19 08:40:06,050 INFO L226 Difference]: Without dead ends: 224 [2023-12-19 08:40:06,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:40:06,053 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 263 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:40:06,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 424 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:40:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-19 08:40:06,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 185. [2023-12-19 08:40:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 128 states have (on average 1.4921875) internal successors, (191), 128 states have internal predecessors, (191), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 08:40:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 299 transitions. [2023-12-19 08:40:06,093 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 299 transitions. Word has length 176 [2023-12-19 08:40:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:40:06,093 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 299 transitions. [2023-12-19 08:40:06,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:40:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 299 transitions. [2023-12-19 08:40:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 08:40:06,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:40:06,095 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:40:06,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 08:40:06,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:06,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:40:06,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:40:06,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1463201884, now seen corresponding path program 1 times [2023-12-19 08:40:06,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:40:06,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876881036] [2023-12-19 08:40:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:06,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:40:06,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:40:06,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099925144] [2023-12-19 08:40:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:06,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:06,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:40:06,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:40:06,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 08:40:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:40:06,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 08:40:06,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:40:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:40:06,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:40:06,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:40:06,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876881036] [2023-12-19 08:40:06,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:40:06,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099925144] [2023-12-19 08:40:06,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099925144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:40:06,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:40:06,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:40:06,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372644603] [2023-12-19 08:40:06,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:40:06,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:40:06,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:40:06,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:40:06,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:40:06,673 INFO L87 Difference]: Start difference. First operand 185 states and 299 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:40:06,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:40:06,784 INFO L93 Difference]: Finished difference Result 499 states and 806 transitions. [2023-12-19 08:40:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 08:40:06,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 08:40:06,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:40:06,787 INFO L225 Difference]: With dead ends: 499 [2023-12-19 08:40:06,787 INFO L226 Difference]: Without dead ends: 315 [2023-12-19 08:40:06,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:40:06,789 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 96 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:40:06,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 421 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:40:06,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-19 08:40:06,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 245. [2023-12-19 08:40:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 160 states have (on average 1.44375) internal successors, (231), 160 states have internal predecessors, (231), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-12-19 08:40:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 393 transitions. [2023-12-19 08:40:06,814 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 393 transitions. Word has length 177 [2023-12-19 08:40:06,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:40:06,814 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 393 transitions. [2023-12-19 08:40:06,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:40:06,815 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 393 transitions. [2023-12-19 08:40:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 08:40:06,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:40:06,816 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:40:06,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 08:40:07,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:07,023 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:40:07,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:40:07,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2014116962, now seen corresponding path program 1 times [2023-12-19 08:40:07,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:40:07,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438283006] [2023-12-19 08:40:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:07,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:40:07,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:40:07,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430270520] [2023-12-19 08:40:07,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:07,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:07,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:40:07,062 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:40:07,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 08:40:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:40:07,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 08:40:07,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:40:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 518 proven. 60 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2023-12-19 08:40:07,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:40:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 18 proven. 60 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-12-19 08:40:07,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:40:07,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438283006] [2023-12-19 08:40:07,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:40:07,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430270520] [2023-12-19 08:40:07,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430270520] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:40:07,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:40:07,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-19 08:40:07,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166738904] [2023-12-19 08:40:07,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:40:07,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 08:40:07,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:40:07,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 08:40:07,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-12-19 08:40:07,940 INFO L87 Difference]: Start difference. First operand 245 states and 393 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-19 08:40:10,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:40:10,539 INFO L93 Difference]: Finished difference Result 1645 states and 2612 transitions. [2023-12-19 08:40:10,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 08:40:10,540 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 177 [2023-12-19 08:40:10,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:40:10,546 INFO L225 Difference]: With dead ends: 1645 [2023-12-19 08:40:10,546 INFO L226 Difference]: Without dead ends: 1461 [2023-12-19 08:40:10,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=953, Invalid=2127, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 08:40:10,548 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2362 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 1108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2391 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1108 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 08:40:10,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2391 Valid, 1293 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1108 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 08:40:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2023-12-19 08:40:10,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 803. [2023-12-19 08:40:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 543 states have (on average 1.4401473296500922) internal successors, (782), 545 states have internal predecessors, (782), 243 states have call successors, (243), 16 states have call predecessors, (243), 16 states have return successors, (243), 241 states have call predecessors, (243), 243 states have call successors, (243) [2023-12-19 08:40:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1268 transitions. [2023-12-19 08:40:10,657 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1268 transitions. Word has length 177 [2023-12-19 08:40:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:40:10,657 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1268 transitions. [2023-12-19 08:40:10,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-19 08:40:10,657 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1268 transitions. [2023-12-19 08:40:10,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 08:40:10,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:40:10,659 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:40:10,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 08:40:10,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:10,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:40:10,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:40:10,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1579785756, now seen corresponding path program 1 times [2023-12-19 08:40:10,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:40:10,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978872152] [2023-12-19 08:40:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:10,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:40:10,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:40:10,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050217440] [2023-12-19 08:40:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:10,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:10,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:40:10,888 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:40:10,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 08:40:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:40:11,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 08:40:11,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:40:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 222 proven. 72 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-12-19 08:40:11,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:40:20,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:40:20,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978872152] [2023-12-19 08:40:20,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:40:20,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050217440] [2023-12-19 08:40:20,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050217440] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 08:40:20,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:40:20,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-19 08:40:20,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609269521] [2023-12-19 08:40:20,457 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 08:40:20,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 08:40:20,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:40:20,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 08:40:20,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-12-19 08:40:20,459 INFO L87 Difference]: Start difference. First operand 803 states and 1268 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 08:40:21,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:40:21,680 INFO L93 Difference]: Finished difference Result 1795 states and 2838 transitions. [2023-12-19 08:40:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 08:40:21,680 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2023-12-19 08:40:21,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:40:21,685 INFO L225 Difference]: With dead ends: 1795 [2023-12-19 08:40:21,686 INFO L226 Difference]: Without dead ends: 1045 [2023-12-19 08:40:21,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=286, Invalid=1120, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 08:40:21,688 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 612 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 08:40:21,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 749 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 08:40:21,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-12-19 08:40:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 951. [2023-12-19 08:40:21,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 690 states have (on average 1.4710144927536233) internal successors, (1015), 692 states have internal predecessors, (1015), 243 states have call successors, (243), 17 states have call predecessors, (243), 17 states have return successors, (243), 241 states have call predecessors, (243), 243 states have call successors, (243) [2023-12-19 08:40:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1501 transitions. [2023-12-19 08:40:21,774 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1501 transitions. Word has length 177 [2023-12-19 08:40:21,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:40:21,777 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1501 transitions. [2023-12-19 08:40:21,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 08:40:21,777 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1501 transitions. [2023-12-19 08:40:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 08:40:21,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:40:21,778 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:40:21,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 08:40:21,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:21,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:40:21,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:40:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash 992979742, now seen corresponding path program 1 times [2023-12-19 08:40:21,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:40:21,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149451158] [2023-12-19 08:40:21,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:21,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:40:22,011 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:40:22,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228448883] [2023-12-19 08:40:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:22,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:22,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:40:22,029 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:40:22,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 08:40:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:40:22,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:40:22,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:40:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:40:30,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:40:30,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:40:30,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149451158] [2023-12-19 08:40:30,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:40:30,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228448883] [2023-12-19 08:40:30,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228448883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:40:30,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:40:30,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:40:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694565116] [2023-12-19 08:40:30,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:40:30,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:40:30,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:40:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:40:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:40:30,392 INFO L87 Difference]: Start difference. First operand 951 states and 1501 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:40:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:40:38,545 INFO L93 Difference]: Finished difference Result 1975 states and 3119 transitions. [2023-12-19 08:40:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:40:38,548 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 08:40:38,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:40:38,555 INFO L225 Difference]: With dead ends: 1975 [2023-12-19 08:40:38,555 INFO L226 Difference]: Without dead ends: 1237 [2023-12-19 08:40:38,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:40:38,557 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 646 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:40:38,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 654 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 08:40:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2023-12-19 08:40:38,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1070. [2023-12-19 08:40:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 802 states have (on average 1.4750623441396509) internal successors, (1183), 805 states have internal predecessors, (1183), 248 states have call successors, (248), 19 states have call predecessors, (248), 19 states have return successors, (248), 245 states have call predecessors, (248), 248 states have call successors, (248) [2023-12-19 08:40:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1679 transitions. [2023-12-19 08:40:38,629 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1679 transitions. Word has length 177 [2023-12-19 08:40:38,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:40:38,630 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1679 transitions. [2023-12-19 08:40:38,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:40:38,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1679 transitions. [2023-12-19 08:40:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 08:40:38,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:40:38,632 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:40:38,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 08:40:38,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:38,839 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:40:38,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:40:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1435317862, now seen corresponding path program 1 times [2023-12-19 08:40:38,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:40:38,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684491289] [2023-12-19 08:40:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:38,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:40:38,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:40:38,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634936073] [2023-12-19 08:40:38,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:40:38,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:40:38,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:40:38,862 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:40:38,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 08:40:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:40:39,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 08:40:39,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:40:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 591 proven. 171 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-12-19 08:40:48,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:41:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:41:07,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:41:07,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684491289] [2023-12-19 08:41:07,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:41:07,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634936073] [2023-12-19 08:41:07,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634936073] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:41:07,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:41:07,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2023-12-19 08:41:07,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113243605] [2023-12-19 08:41:07,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:41:07,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 08:41:07,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:41:07,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 08:41:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=607, Unknown=1, NotChecked=0, Total=756 [2023-12-19 08:41:07,076 INFO L87 Difference]: Start difference. First operand 1070 states and 1679 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:41:18,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 08:41:26,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 08:41:30,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 08:41:35,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 08:41:42,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 08:41:58,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 08:42:02,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 08:42:06,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 08:42:06,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:42:06,950 INFO L93 Difference]: Finished difference Result 2913 states and 4614 transitions. [2023-12-19 08:42:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 08:42:06,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 08:42:06,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:42:06,974 INFO L225 Difference]: With dead ends: 2913 [2023-12-19 08:42:06,974 INFO L226 Difference]: Without dead ends: 2080 [2023-12-19 08:42:06,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=222, Invalid=1037, Unknown=1, NotChecked=0, Total=1260 [2023-12-19 08:42:06,979 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 359 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 7 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.9s IncrementalHoareTripleChecker+Time [2023-12-19 08:42:06,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 685 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 447 Invalid, 8 Unknown, 0 Unchecked, 48.9s Time] [2023-12-19 08:42:06,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2023-12-19 08:42:07,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1086. [2023-12-19 08:42:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 877 states have (on average 1.4982896237172179) internal successors, (1314), 877 states have internal predecessors, (1314), 189 states have call successors, (189), 19 states have call predecessors, (189), 19 states have return successors, (189), 189 states have call predecessors, (189), 189 states have call successors, (189) [2023-12-19 08:42:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1692 transitions. [2023-12-19 08:42:07,101 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1692 transitions. Word has length 177 [2023-12-19 08:42:07,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:42:07,101 INFO L495 AbstractCegarLoop]: Abstraction has 1086 states and 1692 transitions. [2023-12-19 08:42:07,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:42:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1692 transitions. [2023-12-19 08:42:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 08:42:07,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:42:07,103 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:42:07,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 08:42:07,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 08:42:07,310 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:42:07,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:42:07,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2022123876, now seen corresponding path program 1 times [2023-12-19 08:42:07,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:42:07,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570309738] [2023-12-19 08:42:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:07,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:42:07,343 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:42:07,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301465870] [2023-12-19 08:42:07,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:07,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:42:07,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:42:07,344 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:42:07,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 08:42:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:42:07,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:42:07,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:42:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:42:13,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:42:13,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:42:13,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570309738] [2023-12-19 08:42:13,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:42:13,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301465870] [2023-12-19 08:42:13,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301465870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:42:13,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:42:13,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:42:13,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094304980] [2023-12-19 08:42:13,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:42:13,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:42:13,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:42:13,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:42:13,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:42:13,992 INFO L87 Difference]: Start difference. First operand 1086 states and 1692 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:42:20,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:42:20,981 INFO L93 Difference]: Finished difference Result 2166 states and 3389 transitions. [2023-12-19 08:42:20,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:42:20,983 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 08:42:20,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:42:20,987 INFO L225 Difference]: With dead ends: 2166 [2023-12-19 08:42:20,987 INFO L226 Difference]: Without dead ends: 1354 [2023-12-19 08:42:20,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:42:20,989 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 377 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:42:20,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 947 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-19 08:42:20,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2023-12-19 08:42:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1078. [2023-12-19 08:42:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 869 states have (on average 1.4959723820483315) internal successors, (1300), 869 states have internal predecessors, (1300), 189 states have call successors, (189), 19 states have call predecessors, (189), 19 states have return successors, (189), 189 states have call predecessors, (189), 189 states have call successors, (189) [2023-12-19 08:42:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1678 transitions. [2023-12-19 08:42:21,081 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1678 transitions. Word has length 177 [2023-12-19 08:42:21,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:42:21,081 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1678 transitions. [2023-12-19 08:42:21,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:42:21,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1678 transitions. [2023-12-19 08:42:21,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 08:42:21,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:42:21,083 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:42:21,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 08:42:21,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:42:21,289 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:42:21,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:42:21,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1941606283, now seen corresponding path program 1 times [2023-12-19 08:42:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:42:21,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123128485] [2023-12-19 08:42:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:21,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:42:21,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:42:21,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778729047] [2023-12-19 08:42:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:21,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:42:21,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:42:21,320 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:42:21,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 08:42:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:42:21,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 08:42:21,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:42:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 222 proven. 72 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2023-12-19 08:42:22,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:42:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:42:24,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:42:24,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123128485] [2023-12-19 08:42:24,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:42:24,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778729047] [2023-12-19 08:42:24,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778729047] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:42:24,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:42:24,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 19 [2023-12-19 08:42:24,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796763228] [2023-12-19 08:42:24,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:42:24,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:42:24,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:42:24,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:42:24,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-12-19 08:42:24,161 INFO L87 Difference]: Start difference. First operand 1078 states and 1678 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 08:42:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:42:26,882 INFO L93 Difference]: Finished difference Result 3998 states and 6373 transitions. [2023-12-19 08:42:26,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 08:42:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2023-12-19 08:42:26,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:42:26,897 INFO L225 Difference]: With dead ends: 3998 [2023-12-19 08:42:26,897 INFO L226 Difference]: Without dead ends: 3388 [2023-12-19 08:42:26,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=253, Invalid=1153, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 08:42:26,900 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 867 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 08:42:26,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1614 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 08:42:26,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2023-12-19 08:42:27,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 1638. [2023-12-19 08:42:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1311 states have (on average 1.490465293668955) internal successors, (1954), 1311 states have internal predecessors, (1954), 297 states have call successors, (297), 29 states have call predecessors, (297), 29 states have return successors, (297), 297 states have call predecessors, (297), 297 states have call successors, (297) [2023-12-19 08:42:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2548 transitions. [2023-12-19 08:42:27,060 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2548 transitions. Word has length 177 [2023-12-19 08:42:27,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:42:27,061 INFO L495 AbstractCegarLoop]: Abstraction has 1638 states and 2548 transitions. [2023-12-19 08:42:27,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-19 08:42:27,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2548 transitions. [2023-12-19 08:42:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 08:42:27,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:42:27,062 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:42:27,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 08:42:27,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 08:42:27,269 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:42:27,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:42:27,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1277694502, now seen corresponding path program 1 times [2023-12-19 08:42:27,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:42:27,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687900681] [2023-12-19 08:42:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:27,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:42:27,286 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:42:27,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422983353] [2023-12-19 08:42:27,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:27,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:42:27,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:42:27,287 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:42:27,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 08:42:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:42:27,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:42:27,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:42:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:42:36,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:42:36,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:42:36,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687900681] [2023-12-19 08:42:36,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:42:36,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422983353] [2023-12-19 08:42:36,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422983353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:42:36,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:42:36,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:42:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504090386] [2023-12-19 08:42:36,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:42:36,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:42:36,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:42:36,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:42:36,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:42:36,707 INFO L87 Difference]: Start difference. First operand 1638 states and 2548 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:42:47,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:42:47,364 INFO L93 Difference]: Finished difference Result 2621 states and 4088 transitions. [2023-12-19 08:42:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:42:47,365 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 08:42:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:42:47,380 INFO L225 Difference]: With dead ends: 2621 [2023-12-19 08:42:47,380 INFO L226 Difference]: Without dead ends: 2013 [2023-12-19 08:42:47,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:42:47,398 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 644 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:42:47,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 916 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-19 08:42:47,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2023-12-19 08:42:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1873. [2023-12-19 08:42:47,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1486 states have (on average 1.4865410497981157) internal successors, (2209), 1486 states have internal predecessors, (2209), 351 states have call successors, (351), 35 states have call predecessors, (351), 35 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2023-12-19 08:42:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2911 transitions. [2023-12-19 08:42:47,652 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2911 transitions. Word has length 177 [2023-12-19 08:42:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:42:47,653 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 2911 transitions. [2023-12-19 08:42:47,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:42:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2911 transitions. [2023-12-19 08:42:47,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-19 08:42:47,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:42:47,656 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:42:47,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 08:42:47,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 08:42:47,862 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:42:47,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:42:47,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2169176, now seen corresponding path program 1 times [2023-12-19 08:42:47,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:42:47,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300169739] [2023-12-19 08:42:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:47,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:42:47,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:42:47,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696347578] [2023-12-19 08:42:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:42:47,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:42:47,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:42:47,908 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:42:47,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 08:42:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:42:48,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 08:42:48,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:42:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:42:54,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:42:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:42:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300169739] [2023-12-19 08:42:54,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:42:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696347578] [2023-12-19 08:42:54,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696347578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:42:54,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:42:54,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:42:54,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243079027] [2023-12-19 08:42:54,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:42:54,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:42:54,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:42:54,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:42:54,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:42:54,198 INFO L87 Difference]: Start difference. First operand 1873 states and 2911 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:43:02,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:43:02,548 INFO L93 Difference]: Finished difference Result 2843 states and 4423 transitions. [2023-12-19 08:43:02,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:43:02,548 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2023-12-19 08:43:02,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:43:02,554 INFO L225 Difference]: With dead ends: 2843 [2023-12-19 08:43:02,554 INFO L226 Difference]: Without dead ends: 2020 [2023-12-19 08:43:02,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 08:43:02,557 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 468 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-19 08:43:02,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1121 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-19 08:43:02,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2023-12-19 08:43:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 1849. [2023-12-19 08:43:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1462 states have (on average 1.4835841313269493) internal successors, (2169), 1462 states have internal predecessors, (2169), 351 states have call successors, (351), 35 states have call predecessors, (351), 35 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2023-12-19 08:43:02,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2871 transitions. [2023-12-19 08:43:02,723 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2871 transitions. Word has length 177 [2023-12-19 08:43:02,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:43:02,724 INFO L495 AbstractCegarLoop]: Abstraction has 1849 states and 2871 transitions. [2023-12-19 08:43:02,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:43:02,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2871 transitions. [2023-12-19 08:43:02,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 08:43:02,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:43:02,729 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:43:02,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 08:43:02,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 08:43:02,934 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:43:02,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:43:02,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1127125927, now seen corresponding path program 1 times [2023-12-19 08:43:02,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:43:02,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238520741] [2023-12-19 08:43:02,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:43:02,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:43:02,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:43:02,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986374231] [2023-12-19 08:43:02,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:43:02,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:43:02,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:43:02,961 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:43:02,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 08:43:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:43:03,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 08:43:03,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:43:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:43:03,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:43:03,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:43:03,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238520741] [2023-12-19 08:43:03,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:43:03,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986374231] [2023-12-19 08:43:03,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986374231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:43:03,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:43:03,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:43:03,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269116297] [2023-12-19 08:43:03,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:43:03,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 08:43:03,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:43:03,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 08:43:03,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:43:03,097 INFO L87 Difference]: Start difference. First operand 1849 states and 2871 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:43:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:43:03,289 INFO L93 Difference]: Finished difference Result 2735 states and 4269 transitions. [2023-12-19 08:43:03,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 08:43:03,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-12-19 08:43:03,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:43:03,297 INFO L225 Difference]: With dead ends: 2735 [2023-12-19 08:43:03,297 INFO L226 Difference]: Without dead ends: 1849 [2023-12-19 08:43:03,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:43:03,327 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 30 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:43:03,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 252 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:43:03,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2023-12-19 08:43:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1849. [2023-12-19 08:43:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1462 states have (on average 1.472640218878249) internal successors, (2153), 1462 states have internal predecessors, (2153), 351 states have call successors, (351), 35 states have call predecessors, (351), 35 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2023-12-19 08:43:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2855 transitions. [2023-12-19 08:43:03,544 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2855 transitions. Word has length 178 [2023-12-19 08:43:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:43:03,544 INFO L495 AbstractCegarLoop]: Abstraction has 1849 states and 2855 transitions. [2023-12-19 08:43:03,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:43:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2855 transitions. [2023-12-19 08:43:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 08:43:03,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:43:03,546 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:43:03,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 08:43:03,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 08:43:03,751 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:43:03,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:43:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash 461221975, now seen corresponding path program 1 times [2023-12-19 08:43:03,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:43:03,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848608851] [2023-12-19 08:43:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:43:03,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:43:03,770 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:43:03,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015789653] [2023-12-19 08:43:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:43:03,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:43:03,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:43:03,771 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:43:03,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 08:43:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:43:03,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-19 08:43:04,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:43:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 645 proven. 249 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-12-19 08:43:07,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:43:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:43:09,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:43:09,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848608851] [2023-12-19 08:43:09,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:43:09,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015789653] [2023-12-19 08:43:09,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015789653] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:43:09,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:43:09,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [27] total 34 [2023-12-19 08:43:09,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373502428] [2023-12-19 08:43:09,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:43:09,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:43:09,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:43:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:43:09,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 08:43:09,376 INFO L87 Difference]: Start difference. First operand 1849 states and 2855 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:43:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:43:13,719 INFO L93 Difference]: Finished difference Result 3911 states and 6089 transitions. [2023-12-19 08:43:13,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 08:43:13,720 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-12-19 08:43:13,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:43:13,730 INFO L225 Difference]: With dead ends: 3911 [2023-12-19 08:43:13,730 INFO L226 Difference]: Without dead ends: 3183 [2023-12-19 08:43:13,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=439, Invalid=2423, Unknown=0, NotChecked=0, Total=2862 [2023-12-19 08:43:13,733 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 538 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 08:43:13,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 746 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 08:43:13,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2023-12-19 08:43:13,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 1953. [2023-12-19 08:43:13,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1554 states have (on average 1.4639639639639639) internal successors, (2275), 1554 states have internal predecessors, (2275), 351 states have call successors, (351), 47 states have call predecessors, (351), 47 states have return successors, (351), 351 states have call predecessors, (351), 351 states have call successors, (351) [2023-12-19 08:43:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 2977 transitions. [2023-12-19 08:43:13,926 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 2977 transitions. Word has length 178 [2023-12-19 08:43:13,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:43:13,927 INFO L495 AbstractCegarLoop]: Abstraction has 1953 states and 2977 transitions. [2023-12-19 08:43:13,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:43:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 2977 transitions. [2023-12-19 08:43:13,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 08:43:13,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:43:13,928 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:43:13,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-19 08:43:14,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:43:14,135 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:43:14,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:43:14,136 INFO L85 PathProgramCache]: Analyzing trace with hash -348124651, now seen corresponding path program 1 times [2023-12-19 08:43:14,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:43:14,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015482478] [2023-12-19 08:43:14,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:43:14,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:43:14,150 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:43:14,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5437770] [2023-12-19 08:43:14,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:43:14,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:43:14,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:43:14,152 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:43:14,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 08:43:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:43:14,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-19 08:43:14,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:43:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 549 proven. 366 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2023-12-19 08:43:16,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:43:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 63 proven. 162 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2023-12-19 08:43:22,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:43:22,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015482478] [2023-12-19 08:43:22,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:43:22,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5437770] [2023-12-19 08:43:22,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5437770] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:43:22,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:43:22,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24] total 52 [2023-12-19 08:43:22,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53491624] [2023-12-19 08:43:22,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:43:22,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-19 08:43:22,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:43:22,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-19 08:43:22,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=2108, Unknown=0, NotChecked=0, Total=2652 [2023-12-19 08:43:22,328 INFO L87 Difference]: Start difference. First operand 1953 states and 2977 transitions. Second operand has 52 states, 50 states have (on average 2.48) internal successors, (124), 50 states have internal predecessors, (124), 14 states have call successors, (54), 8 states have call predecessors, (54), 15 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) [2023-12-19 08:44:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:44:23,773 INFO L93 Difference]: Finished difference Result 16852 states and 26168 transitions. [2023-12-19 08:44:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-12-19 08:44:23,774 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 2.48) internal successors, (124), 50 states have internal predecessors, (124), 14 states have call successors, (54), 8 states have call predecessors, (54), 15 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) Word has length 178 [2023-12-19 08:44:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:44:23,813 INFO L225 Difference]: With dead ends: 16852 [2023-12-19 08:44:23,813 INFO L226 Difference]: Without dead ends: 15215 [2023-12-19 08:44:23,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19776 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=8880, Invalid=39300, Unknown=0, NotChecked=0, Total=48180 [2023-12-19 08:44:23,826 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 7560 mSDsluCounter, 5485 mSDsCounter, 0 mSdLazyCounter, 8875 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7582 SdHoareTripleChecker+Valid, 5720 SdHoareTripleChecker+Invalid, 9853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 8875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2023-12-19 08:44:23,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7582 Valid, 5720 Invalid, 9853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [978 Valid, 8875 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2023-12-19 08:44:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2023-12-19 08:44:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 4307. [2023-12-19 08:44:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4307 states, 3416 states have (on average 1.4707259953161593) internal successors, (5024), 3416 states have internal predecessors, (5024), 783 states have call successors, (783), 107 states have call predecessors, (783), 107 states have return successors, (783), 783 states have call predecessors, (783), 783 states have call successors, (783) [2023-12-19 08:44:24,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 6590 transitions. [2023-12-19 08:44:24,817 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 6590 transitions. Word has length 178 [2023-12-19 08:44:24,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:44:24,818 INFO L495 AbstractCegarLoop]: Abstraction has 4307 states and 6590 transitions. [2023-12-19 08:44:24,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 2.48) internal successors, (124), 50 states have internal predecessors, (124), 14 states have call successors, (54), 8 states have call predecessors, (54), 15 states have return successors, (54), 14 states have call predecessors, (54), 14 states have call successors, (54) [2023-12-19 08:44:24,818 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 6590 transitions. [2023-12-19 08:44:24,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 08:44:24,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:44:24,820 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:44:24,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-19 08:44:25,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 08:44:25,026 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:44:25,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:44:25,026 INFO L85 PathProgramCache]: Analyzing trace with hash -125584039, now seen corresponding path program 1 times [2023-12-19 08:44:25,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:44:25,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413873911] [2023-12-19 08:44:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:44:25,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:44:25,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:44:25,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307487295] [2023-12-19 08:44:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:44:25,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:44:25,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:44:25,047 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:44:25,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 08:44:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:44:25,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 08:44:25,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:44:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:44:26,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:44:26,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:44:26,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413873911] [2023-12-19 08:44:26,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:44:26,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307487295] [2023-12-19 08:44:26,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307487295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:44:26,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:44:26,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:44:26,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552414751] [2023-12-19 08:44:26,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:44:26,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:44:26,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:44:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:44:26,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:44:26,789 INFO L87 Difference]: Start difference. First operand 4307 states and 6590 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:44:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:44:30,325 INFO L93 Difference]: Finished difference Result 10711 states and 16559 transitions. [2023-12-19 08:44:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 08:44:30,326 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-12-19 08:44:30,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:44:30,342 INFO L225 Difference]: With dead ends: 10711 [2023-12-19 08:44:30,342 INFO L226 Difference]: Without dead ends: 8851 [2023-12-19 08:44:30,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 08:44:30,345 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 864 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:44:30,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 912 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 08:44:30,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8851 states. [2023-12-19 08:44:31,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8851 to 6738. [2023-12-19 08:44:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6738 states, 5363 states have (on average 1.4780906209211262) internal successors, (7927), 5363 states have internal predecessors, (7927), 1215 states have call successors, (1215), 159 states have call predecessors, (1215), 159 states have return successors, (1215), 1215 states have call predecessors, (1215), 1215 states have call successors, (1215) [2023-12-19 08:44:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6738 states to 6738 states and 10357 transitions. [2023-12-19 08:44:31,953 INFO L78 Accepts]: Start accepts. Automaton has 6738 states and 10357 transitions. Word has length 178 [2023-12-19 08:44:31,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:44:31,953 INFO L495 AbstractCegarLoop]: Abstraction has 6738 states and 10357 transitions. [2023-12-19 08:44:31,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:44:31,953 INFO L276 IsEmpty]: Start isEmpty. Operand 6738 states and 10357 transitions. [2023-12-19 08:44:31,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-19 08:44:31,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:44:31,956 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:44:31,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 08:44:32,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 08:44:32,163 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:44:32,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:44:32,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1797008867, now seen corresponding path program 1 times [2023-12-19 08:44:32,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:44:32,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314767618] [2023-12-19 08:44:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:44:32,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:44:32,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:44:32,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109645888] [2023-12-19 08:44:32,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:44:32,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:44:32,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:44:32,178 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:44:32,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 08:44:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:44:32,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 08:44:32,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:44:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:44:33,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:44:33,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:44:33,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314767618] [2023-12-19 08:44:33,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:44:33,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109645888] [2023-12-19 08:44:33,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109645888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:44:33,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:44:33,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 08:44:33,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872769625] [2023-12-19 08:44:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:44:33,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 08:44:33,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:44:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 08:44:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 08:44:33,855 INFO L87 Difference]: Start difference. First operand 6738 states and 10357 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:44:37,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:44:37,888 INFO L93 Difference]: Finished difference Result 10623 states and 16475 transitions. [2023-12-19 08:44:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 08:44:37,896 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2023-12-19 08:44:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:44:37,945 INFO L225 Difference]: With dead ends: 10623 [2023-12-19 08:44:37,945 INFO L226 Difference]: Without dead ends: 9841 [2023-12-19 08:44:37,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 08:44:37,964 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 761 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 08:44:37,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1202 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 08:44:37,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9841 states. [2023-12-19 08:44:40,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9841 to 8226. [2023-12-19 08:44:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8226 states, 6487 states have (on average 1.4795745336827502) internal successors, (9598), 6487 states have internal predecessors, (9598), 1539 states have call successors, (1539), 199 states have call predecessors, (1539), 199 states have return successors, (1539), 1539 states have call predecessors, (1539), 1539 states have call successors, (1539) [2023-12-19 08:44:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8226 states to 8226 states and 12676 transitions. [2023-12-19 08:44:40,396 INFO L78 Accepts]: Start accepts. Automaton has 8226 states and 12676 transitions. Word has length 178 [2023-12-19 08:44:40,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:44:40,396 INFO L495 AbstractCegarLoop]: Abstraction has 8226 states and 12676 transitions. [2023-12-19 08:44:40,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:44:40,396 INFO L276 IsEmpty]: Start isEmpty. Operand 8226 states and 12676 transitions. [2023-12-19 08:44:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-19 08:44:40,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:44:40,399 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:44:40,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 08:44:40,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 08:44:40,605 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:44:40,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:44:40,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1316208871, now seen corresponding path program 1 times [2023-12-19 08:44:40,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:44:40,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005573403] [2023-12-19 08:44:40,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:44:40,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:44:40,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:44:40,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952175919] [2023-12-19 08:44:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:44:40,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:44:40,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:44:40,637 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:44:40,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 08:44:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:44:40,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 08:44:40,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:44:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 656 proven. 51 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2023-12-19 08:44:41,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:44:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 27 proven. 51 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-12-19 08:44:41,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:44:41,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005573403] [2023-12-19 08:44:41,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:44:41,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952175919] [2023-12-19 08:44:41,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952175919] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:44:41,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:44:41,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 08:44:41,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182516404] [2023-12-19 08:44:41,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:44:41,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 08:44:41,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:44:41,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 08:44:41,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-19 08:44:41,491 INFO L87 Difference]: Start difference. First operand 8226 states and 12676 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-19 08:44:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:44:45,865 INFO L93 Difference]: Finished difference Result 13972 states and 21057 transitions. [2023-12-19 08:44:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-19 08:44:45,866 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 179 [2023-12-19 08:44:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:44:45,885 INFO L225 Difference]: With dead ends: 13972 [2023-12-19 08:44:45,885 INFO L226 Difference]: Without dead ends: 8368 [2023-12-19 08:44:45,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=742, Invalid=2680, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 08:44:45,895 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 2294 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 08:44:45,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 1482 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 08:44:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8368 states. [2023-12-19 08:44:47,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8368 to 6549. [2023-12-19 08:44:47,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6549 states, 5004 states have (on average 1.4386490807354118) internal successors, (7199), 5018 states have internal predecessors, (7199), 1305 states have call successors, (1305), 239 states have call predecessors, (1305), 239 states have return successors, (1305), 1291 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-12-19 08:44:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6549 states to 6549 states and 9809 transitions. [2023-12-19 08:44:47,686 INFO L78 Accepts]: Start accepts. Automaton has 6549 states and 9809 transitions. Word has length 179 [2023-12-19 08:44:47,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:44:47,686 INFO L495 AbstractCegarLoop]: Abstraction has 6549 states and 9809 transitions. [2023-12-19 08:44:47,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-19 08:44:47,686 INFO L276 IsEmpty]: Start isEmpty. Operand 6549 states and 9809 transitions. [2023-12-19 08:44:47,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-19 08:44:47,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:44:47,688 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:44:47,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 08:44:47,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 08:44:47,898 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:44:47,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:44:47,898 INFO L85 PathProgramCache]: Analyzing trace with hash -471297962, now seen corresponding path program 1 times [2023-12-19 08:44:47,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:44:47,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953991996] [2023-12-19 08:44:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:44:47,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:44:47,916 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:44:47,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431398730] [2023-12-19 08:44:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:44:47,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:44:47,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:44:47,917 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:44:47,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 08:44:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:44:48,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 08:44:48,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:44:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 08:44:48,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:44:48,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:44:48,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953991996] [2023-12-19 08:44:48,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:44:48,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431398730] [2023-12-19 08:44:48,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431398730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:44:48,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:44:48,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 08:44:48,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469628054] [2023-12-19 08:44:48,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:44:48,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 08:44:48,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:44:48,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 08:44:48,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-19 08:44:48,684 INFO L87 Difference]: Start difference. First operand 6549 states and 9809 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:44:51,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:44:51,016 INFO L93 Difference]: Finished difference Result 12270 states and 18330 transitions. [2023-12-19 08:44:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 08:44:51,016 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2023-12-19 08:44:51,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:44:51,039 INFO L225 Difference]: With dead ends: 12270 [2023-12-19 08:44:51,039 INFO L226 Difference]: Without dead ends: 7758 [2023-12-19 08:44:51,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-19 08:44:51,050 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 425 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 08:44:51,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 912 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 08:44:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7758 states. [2023-12-19 08:44:52,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7758 to 6568. [2023-12-19 08:44:52,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6568 states, 5023 states have (on average 1.437786183555644) internal successors, (7222), 5037 states have internal predecessors, (7222), 1305 states have call successors, (1305), 239 states have call predecessors, (1305), 239 states have return successors, (1305), 1291 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-12-19 08:44:52,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6568 states to 6568 states and 9832 transitions. [2023-12-19 08:44:52,677 INFO L78 Accepts]: Start accepts. Automaton has 6568 states and 9832 transitions. Word has length 179 [2023-12-19 08:44:52,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:44:52,678 INFO L495 AbstractCegarLoop]: Abstraction has 6568 states and 9832 transitions. [2023-12-19 08:44:52,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-19 08:44:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 6568 states and 9832 transitions. [2023-12-19 08:44:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-19 08:44:52,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:44:52,681 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:44:52,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 08:44:52,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:44:52,889 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:44:52,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:44:52,889 INFO L85 PathProgramCache]: Analyzing trace with hash -605311468, now seen corresponding path program 1 times [2023-12-19 08:44:52,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:44:52,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329983280] [2023-12-19 08:44:52,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:44:52,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:44:52,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:44:52,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129502552] [2023-12-19 08:44:52,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:44:52,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:44:52,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:44:52,905 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:44:52,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 08:44:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:44:53,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 08:44:53,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:44:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 561 proven. 129 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2023-12-19 08:44:53,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:44:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 24 proven. 54 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-12-19 08:44:53,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:44:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329983280] [2023-12-19 08:44:53,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:44:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129502552] [2023-12-19 08:44:53,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129502552] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:44:53,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:44:53,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-12-19 08:44:53,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813128009] [2023-12-19 08:44:53,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:44:53,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 08:44:53,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:44:53,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 08:44:53,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-12-19 08:44:53,705 INFO L87 Difference]: Start difference. First operand 6568 states and 9832 transitions. Second operand has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 states have internal predecessors, (80), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-19 08:44:58,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:44:58,707 INFO L93 Difference]: Finished difference Result 19853 states and 29889 transitions. [2023-12-19 08:44:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-19 08:44:58,708 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 states have internal predecessors, (80), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) Word has length 179 [2023-12-19 08:44:58,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:44:58,733 INFO L225 Difference]: With dead ends: 19853 [2023-12-19 08:44:58,733 INFO L226 Difference]: Without dead ends: 13845 [2023-12-19 08:44:58,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=892, Invalid=2530, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 08:44:58,744 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1041 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 08:44:58,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 2325 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 08:44:58,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13845 states. [2023-12-19 08:45:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13845 to 8081. [2023-12-19 08:45:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8081 states, 6178 states have (on average 1.429426999028812) internal successors, (8831), 6196 states have internal predecessors, (8831), 1603 states have call successors, (1603), 299 states have call predecessors, (1603), 299 states have return successors, (1603), 1585 states have call predecessors, (1603), 1603 states have call successors, (1603) [2023-12-19 08:45:00,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8081 states to 8081 states and 12037 transitions. [2023-12-19 08:45:00,931 INFO L78 Accepts]: Start accepts. Automaton has 8081 states and 12037 transitions. Word has length 179 [2023-12-19 08:45:00,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:45:00,931 INFO L495 AbstractCegarLoop]: Abstraction has 8081 states and 12037 transitions. [2023-12-19 08:45:00,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 states have internal predecessors, (80), 4 states have call successors, (54), 3 states have call predecessors, (54), 5 states have return successors, (54), 4 states have call predecessors, (54), 4 states have call successors, (54) [2023-12-19 08:45:00,931 INFO L276 IsEmpty]: Start isEmpty. Operand 8081 states and 12037 transitions. [2023-12-19 08:45:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-19 08:45:00,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:45:00,934 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:45:00,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 08:45:01,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:45:01,140 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:45:01,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:45:01,140 INFO L85 PathProgramCache]: Analyzing trace with hash 797566899, now seen corresponding path program 1 times [2023-12-19 08:45:01,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:45:01,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054317834] [2023-12-19 08:45:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:01,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:45:01,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:45:01,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856263150] [2023-12-19 08:45:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:45:01,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:45:01,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:45:01,156 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:45:01,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 08:45:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:45:01,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 08:45:01,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-19 08:54:23,971 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 08:54:23,971 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 08:54:23,972 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 08:54:23,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 08:54:24,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:54:24,184 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 181 with TraceHistMax 27,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-43-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-1 context. [2023-12-19 08:54:24,188 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 08:54:24,189 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 08:54:24,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 08:54:24 BoogieIcfgContainer [2023-12-19 08:54:24,191 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 08:54:24,191 INFO L158 Benchmark]: Toolchain (without parser) took 861754.23ms. Allocated memory was 265.3MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 222.4MB in the beginning and 2.0GB in the end (delta: -1.7GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-19 08:54:24,191 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 08:54:24,191 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.97ms. Allocated memory is still 265.3MB. Free memory was 222.0MB in the beginning and 206.3MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-19 08:54:24,191 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.86ms. Allocated memory is still 265.3MB. Free memory was 206.3MB in the beginning and 202.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 08:54:24,192 INFO L158 Benchmark]: Boogie Preprocessor took 47.73ms. Allocated memory is still 265.3MB. Free memory was 201.7MB in the beginning and 196.2MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 08:54:24,210 INFO L158 Benchmark]: RCFGBuilder took 521.35ms. Allocated memory is still 265.3MB. Free memory was 196.2MB in the beginning and 165.0MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2023-12-19 08:54:24,210 INFO L158 Benchmark]: TraceAbstraction took 860787.16ms. Allocated memory was 265.3MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 164.3MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-19 08:54:24,211 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 335.97ms. Allocated memory is still 265.3MB. Free memory was 222.0MB in the beginning and 206.3MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.86ms. Allocated memory is still 265.3MB. Free memory was 206.3MB in the beginning and 202.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.73ms. Allocated memory is still 265.3MB. Free memory was 201.7MB in the beginning and 196.2MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 521.35ms. Allocated memory is still 265.3MB. Free memory was 196.2MB in the beginning and 165.0MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 860787.16ms. Allocated memory was 265.3MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 164.3MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * 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 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 181 with TraceHistMax 27,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-43-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 860.7s, OverallIterations: 21, TraceHistogramMax: 27, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 186.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 20503 SdHoareTripleChecker+Valid, 100.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20408 mSDsluCounter, 23016 SdHoareTripleChecker+Invalid, 97.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19393 mSDsCounter, 4029 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21422 IncrementalHoareTripleChecker+Invalid, 25459 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4029 mSolverCounterUnsat, 3623 mSDtfsCounter, 21422 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5301 GetRequests, 4580 SyntacticMatches, 0 SemanticMatches, 721 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25617 ImplicationChecksByTransitivity, 98.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8226occurred in iteration=17, InterpolantAutomatonStates: 553, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 29097 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 90.6s InterpolantComputationTime, 3721 NumberOfCodeBlocks, 3721 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 4764 ConstructedInterpolants, 9 QuantifiedInterpolants, 57486 SizeOfPredicates, 256 NumberOfNonLiveVariables, 8738 ConjunctsInSsa, 414 ConjunctsInUnsatCore, 27 InterpolantComputations, 15 PerfectInterpolantSequences, 36411/37908 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown