/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_fillercodesize_ps-cn-10_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 06:33:35,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 06:33:35,610 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 06:33:35,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 06:33:35,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 06:33:35,661 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 06:33:35,662 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 06:33:35,663 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 06:33:35,664 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 06:33:35,670 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 06:33:35,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 06:33:35,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 06:33:35,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 06:33:35,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 06:33:35,677 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 06:33:35,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 06:33:35,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 06:33:35,678 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 06:33:35,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 06:33:35,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 06:33:35,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 06:33:35,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 06:33:35,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 06:33:35,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 06:33:35,680 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 06:33:35,680 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 06:33:35,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 06:33:35,681 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 06:33:35,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 06:33:35,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 06:33:35,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 06:33:35,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 06:33:35,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:33:35,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 06:33:35,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 06:33:35,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 06:33:35,683 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 06:33:35,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 06:33:35,684 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 06:33:35,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 06:33:35,684 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 06:33:35,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 06:33:35,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 06:33:35,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 06:33:35,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 06:33:36,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 06:33:36,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 06:33:36,003 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 06:33:36,003 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 06:33:36,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-34.i [2023-12-19 06:33:37,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 06:33:37,587 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 06:33:37,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-34.i [2023-12-19 06:33:37,596 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34665a037/95e4273fa3114596a30ab0642e81044c/FLAGf2e4da673 [2023-12-19 06:33:37,616 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34665a037/95e4273fa3114596a30ab0642e81044c [2023-12-19 06:33:37,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 06:33:37,619 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 06:33:37,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 06:33:37,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 06:33:37,626 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 06:33:37,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:37,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad7bb40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37, skipping insertion in model container [2023-12-19 06:33:37,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:37,667 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 06:33:37,813 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_fillercodesize_ps-cn-10_file-34.i[915,928] [2023-12-19 06:33:37,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:33:37,884 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 06:33:37,895 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_fillercodesize_ps-cn-10_file-34.i[915,928] [2023-12-19 06:33:37,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 06:33:37,964 INFO L206 MainTranslator]: Completed translation [2023-12-19 06:33:37,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37 WrapperNode [2023-12-19 06:33:37,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 06:33:37,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 06:33:37,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 06:33:37,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 06:33:37,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:38,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:38,067 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 224 [2023-12-19 06:33:38,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 06:33:38,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 06:33:38,069 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 06:33:38,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 06:33:38,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:38,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:38,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:38,124 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 06:33:38,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:38,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:38,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:38,138 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:38,141 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:38,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:38,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 06:33:38,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 06:33:38,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 06:33:38,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 06:33:38,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (1/1) ... [2023-12-19 06:33:38,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 06:33:38,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:33:38,186 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 06:33:38,214 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 06:33:38,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 06:33:38,228 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 06:33:38,228 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 06:33:38,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 06:33:38,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 06:33:38,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 06:33:38,342 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 06:33:38,344 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 06:33:38,806 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 06:33:38,857 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 06:33:38,857 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 06:33:38,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:33:38 BoogieIcfgContainer [2023-12-19 06:33:38,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 06:33:38,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 06:33:38,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 06:33:38,863 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 06:33:38,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 06:33:37" (1/3) ... [2023-12-19 06:33:38,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69921d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:33:38, skipping insertion in model container [2023-12-19 06:33:38,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:33:37" (2/3) ... [2023-12-19 06:33:38,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69921d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 06:33:38, skipping insertion in model container [2023-12-19 06:33:38,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:33:38" (3/3) ... [2023-12-19 06:33:38,869 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-34.i [2023-12-19 06:33:38,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 06:33:38,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 06:33:38,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 06:33:38,950 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;@711b7fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 06:33:38,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 06:33:38,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 52 states have internal predecessors, (78), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 06:33:38,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 06:33:38,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:33:38,973 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:38,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:33:38,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:33:38,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1697288489, now seen corresponding path program 1 times [2023-12-19 06:33:38,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:33:38,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330237668] [2023-12-19 06:33:38,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:38,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:33:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:33:39,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:33:39,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330237668] [2023-12-19 06:33:39,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 06:33:39,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050337718] [2023-12-19 06:33:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:39,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:33:39,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:33:39,255 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 06:33:39,260 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 06:33:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:33:39,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 06:33:39,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:33:39,510 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-12-19 06:33:39,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:33:39,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050337718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:33:39,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:33:39,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 06:33:39,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828849260] [2023-12-19 06:33:39,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:33:39,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 06:33:39,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:33:39,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 06:33:39,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 06:33:39,553 INFO L87 Difference]: Start difference. First operand has 76 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 52 states have internal predecessors, (78), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 06:33:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:33:39,593 INFO L93 Difference]: Finished difference Result 149 states and 264 transitions. [2023-12-19 06:33:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 06:33:39,598 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 141 [2023-12-19 06:33:39,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:33:39,609 INFO L225 Difference]: With dead ends: 149 [2023-12-19 06:33:39,610 INFO L226 Difference]: Without dead ends: 74 [2023-12-19 06:33:39,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 140 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 06:33:39,620 INFO L413 NwaCegarLoop]: 114 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, 114 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 06:33:39,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 06:33:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-19 06:33:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-12-19 06:33:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.46) internal successors, (73), 50 states have internal predecessors, (73), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 06:33:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 117 transitions. [2023-12-19 06:33:39,669 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 117 transitions. Word has length 141 [2023-12-19 06:33:39,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:33:39,670 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 117 transitions. [2023-12-19 06:33:39,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 06:33:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 117 transitions. [2023-12-19 06:33:39,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 06:33:39,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:33:39,674 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:39,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 06:33:39,877 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 06:33:39,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:33:39,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:33:39,879 INFO L85 PathProgramCache]: Analyzing trace with hash -977960365, now seen corresponding path program 1 times [2023-12-19 06:33:39,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:33:39,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717169513] [2023-12-19 06:33:39,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:39,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:33:39,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:33:39,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73972307] [2023-12-19 06:33:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:39,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:33:39,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:33:39,936 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 06:33:39,955 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 06:33:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:33:40,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 06:33:40,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:33:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:33:40,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:33:40,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:33:40,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717169513] [2023-12-19 06:33:40,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:33:40,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73972307] [2023-12-19 06:33:40,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73972307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:33:40,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:33:40,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 06:33:40,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220719328] [2023-12-19 06:33:40,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:33:40,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 06:33:40,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:33:40,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 06:33:40,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 06:33:40,352 INFO L87 Difference]: Start difference. First operand 74 states and 117 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:33:40,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:33:40,666 INFO L93 Difference]: Finished difference Result 221 states and 348 transitions. [2023-12-19 06:33:40,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 06:33:40,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 141 [2023-12-19 06:33:40,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:33:40,675 INFO L225 Difference]: With dead ends: 221 [2023-12-19 06:33:40,676 INFO L226 Difference]: Without dead ends: 148 [2023-12-19 06:33:40,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 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 06:33:40,681 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 123 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:33:40,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 449 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 06:33:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-19 06:33:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 76. [2023-12-19 06:33:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 52 states have internal predecessors, (75), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 06:33:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 119 transitions. [2023-12-19 06:33:40,711 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 119 transitions. Word has length 141 [2023-12-19 06:33:40,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:33:40,713 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 119 transitions. [2023-12-19 06:33:40,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:33:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 119 transitions. [2023-12-19 06:33:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 06:33:40,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:33:40,722 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:40,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 06:33:40,932 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 06:33:40,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:33:40,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:33:40,934 INFO L85 PathProgramCache]: Analyzing trace with hash 817924019, now seen corresponding path program 1 times [2023-12-19 06:33:40,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:33:40,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424479071] [2023-12-19 06:33:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:40,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:33:40,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:33:40,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663907086] [2023-12-19 06:33:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:40,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:33:40,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:33:40,981 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 06:33:41,005 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 06:33:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:33:41,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 06:33:41,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:33:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 453 proven. 39 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-12-19 06:33:41,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:33:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 24 proven. 39 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-12-19 06:33:41,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:33:41,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424479071] [2023-12-19 06:33:41,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:33:41,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663907086] [2023-12-19 06:33:41,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663907086] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:33:41,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:33:41,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 06:33:41,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630857176] [2023-12-19 06:33:41,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:33:41,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:33:41,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:33:41,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:33:41,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:33:41,823 INFO L87 Difference]: Start difference. First operand 76 states and 119 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-12-19 06:33:42,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:33:42,349 INFO L93 Difference]: Finished difference Result 276 states and 424 transitions. [2023-12-19 06:33:42,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 06:33:42,350 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 142 [2023-12-19 06:33:42,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:33:42,352 INFO L225 Difference]: With dead ends: 276 [2023-12-19 06:33:42,352 INFO L226 Difference]: Without dead ends: 201 [2023-12-19 06:33:42,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-19 06:33:42,354 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 322 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 06:33:42,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 379 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 06:33:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-19 06:33:42,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 149. [2023-12-19 06:33:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 101 states have (on average 1.4158415841584158) internal successors, (143), 101 states have internal predecessors, (143), 44 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-19 06:33:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 231 transitions. [2023-12-19 06:33:42,382 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 231 transitions. Word has length 142 [2023-12-19 06:33:42,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:33:42,383 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 231 transitions. [2023-12-19 06:33:42,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-12-19 06:33:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 231 transitions. [2023-12-19 06:33:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 06:33:42,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:33:42,385 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:42,395 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 06:33:42,585 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 06:33:42,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:33:42,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:33:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash -803671932, now seen corresponding path program 1 times [2023-12-19 06:33:42,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:33:42,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925059831] [2023-12-19 06:33:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:42,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:33:42,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:33:42,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988977738] [2023-12-19 06:33:42,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:42,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:33:42,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:33:42,635 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 06:33:42,651 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 06:33:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:33:42,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 06:33:42,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:33:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:33:42,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:33:42,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:33:42,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925059831] [2023-12-19 06:33:42,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:33:42,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988977738] [2023-12-19 06:33:42,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988977738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:33:42,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:33:42,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:33:42,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425562236] [2023-12-19 06:33:42,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:33:42,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:33:42,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:33:42,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:33:42,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:33:42,909 INFO L87 Difference]: Start difference. First operand 149 states and 231 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:33:43,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:33:43,045 INFO L93 Difference]: Finished difference Result 497 states and 770 transitions. [2023-12-19 06:33:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:33:43,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-19 06:33:43,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:33:43,049 INFO L225 Difference]: With dead ends: 497 [2023-12-19 06:33:43,049 INFO L226 Difference]: Without dead ends: 349 [2023-12-19 06:33:43,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 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 06:33:43,051 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 119 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 06:33:43,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 367 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 06:33:43,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-19 06:33:43,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 299. [2023-12-19 06:33:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 204 states have (on average 1.4019607843137254) internal successors, (286), 204 states have internal predecessors, (286), 88 states have call successors, (88), 6 states have call predecessors, (88), 6 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-19 06:33:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 462 transitions. [2023-12-19 06:33:43,102 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 462 transitions. Word has length 142 [2023-12-19 06:33:43,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:33:43,104 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 462 transitions. [2023-12-19 06:33:43,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:33:43,104 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 462 transitions. [2023-12-19 06:33:43,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 06:33:43,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:33:43,106 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:43,118 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 06:33:43,315 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 06:33:43,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:33:43,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:33:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash 975952890, now seen corresponding path program 1 times [2023-12-19 06:33:43,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:33:43,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383234188] [2023-12-19 06:33:43,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:43,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:33:43,379 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:33:43,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051860933] [2023-12-19 06:33:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:43,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:33:43,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:33:43,383 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 06:33:43,388 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 06:33:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:33:43,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 06:33:43,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:33:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 177 proven. 57 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2023-12-19 06:33:44,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:33:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:33:45,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:33:45,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383234188] [2023-12-19 06:33:45,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:33:45,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051860933] [2023-12-19 06:33:45,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051860933] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:33:45,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:33:45,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2023-12-19 06:33:45,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763404915] [2023-12-19 06:33:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:33:45,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 06:33:45,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:33:45,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 06:33:45,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:33:45,660 INFO L87 Difference]: Start difference. First operand 299 states and 462 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 06:33:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:33:47,037 INFO L93 Difference]: Finished difference Result 1252 states and 1927 transitions. [2023-12-19 06:33:47,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 06:33:47,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 143 [2023-12-19 06:33:47,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:33:47,043 INFO L225 Difference]: With dead ends: 1252 [2023-12-19 06:33:47,046 INFO L226 Difference]: Without dead ends: 1102 [2023-12-19 06:33:47,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2023-12-19 06:33:47,048 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 494 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 06:33:47,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 1049 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 06:33:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2023-12-19 06:33:47,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 665. [2023-12-19 06:33:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 454 states have (on average 1.4295154185022025) internal successors, (649), 454 states have internal predecessors, (649), 198 states have call successors, (198), 12 states have call predecessors, (198), 12 states have return successors, (198), 198 states have call predecessors, (198), 198 states have call successors, (198) [2023-12-19 06:33:47,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1045 transitions. [2023-12-19 06:33:47,210 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1045 transitions. Word has length 143 [2023-12-19 06:33:47,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:33:47,210 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 1045 transitions. [2023-12-19 06:33:47,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 06:33:47,211 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1045 transitions. [2023-12-19 06:33:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 06:33:47,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:33:47,213 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:47,222 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 06:33:47,421 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 06:33:47,422 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:33:47,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:33:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash -645643061, now seen corresponding path program 1 times [2023-12-19 06:33:47,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:33:47,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308016479] [2023-12-19 06:33:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:47,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:33:47,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:33:47,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653067638] [2023-12-19 06:33:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:47,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:33:47,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:33:47,469 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 06:33:47,491 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 06:33:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:33:47,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 06:33:47,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:33:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:33:50,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:33:50,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:33:50,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308016479] [2023-12-19 06:33:50,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:33:50,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653067638] [2023-12-19 06:33:50,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653067638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:33:50,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:33:50,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 06:33:50,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032363711] [2023-12-19 06:33:50,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:33:50,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 06:33:50,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:33:50,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 06:33:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:33:50,177 INFO L87 Difference]: Start difference. First operand 665 states and 1045 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:33:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:33:51,720 INFO L93 Difference]: Finished difference Result 1821 states and 2870 transitions. [2023-12-19 06:33:51,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 06:33:51,720 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-19 06:33:51,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:33:51,730 INFO L225 Difference]: With dead ends: 1821 [2023-12-19 06:33:51,730 INFO L226 Difference]: Without dead ends: 1518 [2023-12-19 06:33:51,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-12-19 06:33:51,735 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 564 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:33:51,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 735 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 06:33:51,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2023-12-19 06:33:51,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1414. [2023-12-19 06:33:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 972 states have (on average 1.4300411522633745) internal successors, (1390), 972 states have internal predecessors, (1390), 418 states have call successors, (418), 23 states have call predecessors, (418), 23 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2023-12-19 06:33:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2226 transitions. [2023-12-19 06:33:51,948 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2226 transitions. Word has length 143 [2023-12-19 06:33:51,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:33:51,949 INFO L495 AbstractCegarLoop]: Abstraction has 1414 states and 2226 transitions. [2023-12-19 06:33:51,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:33:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2226 transitions. [2023-12-19 06:33:51,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 06:33:51,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:33:51,952 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:51,961 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 06:33:52,161 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 06:33:52,162 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:33:52,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:33:52,162 INFO L85 PathProgramCache]: Analyzing trace with hash -588384759, now seen corresponding path program 1 times [2023-12-19 06:33:52,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:33:52,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744991725] [2023-12-19 06:33:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:52,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:33:52,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:33:52,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651990613] [2023-12-19 06:33:52,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:52,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:33:52,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:33:52,214 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 06:33:52,238 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 06:33:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:33:52,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 06:33:52,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:33:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:33:54,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:33:54,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:33:54,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744991725] [2023-12-19 06:33:54,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:33:54,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651990613] [2023-12-19 06:33:54,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651990613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:33:54,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:33:54,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:33:54,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084930197] [2023-12-19 06:33:54,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:33:54,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:33:54,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:33:54,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:33:54,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:33:54,922 INFO L87 Difference]: Start difference. First operand 1414 states and 2226 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:33:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:33:57,094 INFO L93 Difference]: Finished difference Result 2182 states and 3439 transitions. [2023-12-19 06:33:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 06:33:57,097 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-19 06:33:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:33:57,110 INFO L225 Difference]: With dead ends: 2182 [2023-12-19 06:33:57,111 INFO L226 Difference]: Without dead ends: 1518 [2023-12-19 06:33:57,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 06:33:57,115 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 434 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 06:33:57,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 762 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 06:33:57,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2023-12-19 06:33:57,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1428. [2023-12-19 06:33:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 986 states have (on average 1.4300202839756593) internal successors, (1410), 986 states have internal predecessors, (1410), 418 states have call successors, (418), 23 states have call predecessors, (418), 23 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2023-12-19 06:33:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2246 transitions. [2023-12-19 06:33:57,287 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2246 transitions. Word has length 143 [2023-12-19 06:33:57,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:33:57,287 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2246 transitions. [2023-12-19 06:33:57,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:33:57,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2246 transitions. [2023-12-19 06:33:57,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 06:33:57,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:33:57,290 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:57,300 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 06:33:57,498 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 06:33:57,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:33:57,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:33:57,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1454989687, now seen corresponding path program 1 times [2023-12-19 06:33:57,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:33:57,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923780677] [2023-12-19 06:33:57,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:57,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:33:57,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:33:57,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347072251] [2023-12-19 06:33:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:33:57,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:33:57,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:33:57,531 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 06:33:57,534 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 06:33:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:33:57,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 06:33:57,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:33:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 177 proven. 57 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2023-12-19 06:33:58,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:34:16,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:34:16,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923780677] [2023-12-19 06:34:16,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:34:16,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347072251] [2023-12-19 06:34:16,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347072251] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 06:34:16,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:34:16,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-19 06:34:16,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765629166] [2023-12-19 06:34:16,015 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 06:34:16,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 06:34:16,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:34:16,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 06:34:16,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=281, Unknown=1, NotChecked=0, Total=342 [2023-12-19 06:34:16,017 INFO L87 Difference]: Start difference. First operand 1428 states and 2246 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 06:34:17,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:34:17,130 INFO L93 Difference]: Finished difference Result 3323 states and 5165 transitions. [2023-12-19 06:34:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 06:34:17,131 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 143 [2023-12-19 06:34:17,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:34:17,144 INFO L225 Difference]: With dead ends: 3323 [2023-12-19 06:34:17,144 INFO L226 Difference]: Without dead ends: 1941 [2023-12-19 06:34:17,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=189, Invalid=740, Unknown=1, NotChecked=0, Total=930 [2023-12-19 06:34:17,148 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 302 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:34:17,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 480 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:34:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2023-12-19 06:34:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1715. [2023-12-19 06:34:17,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1272 states have (on average 1.4323899371069182) internal successors, (1822), 1272 states have internal predecessors, (1822), 418 states have call successors, (418), 24 states have call predecessors, (418), 24 states have return successors, (418), 418 states have call predecessors, (418), 418 states have call successors, (418) [2023-12-19 06:34:17,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2658 transitions. [2023-12-19 06:34:17,345 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2658 transitions. Word has length 143 [2023-12-19 06:34:17,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:34:17,345 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2658 transitions. [2023-12-19 06:34:17,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 06:34:17,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2658 transitions. [2023-12-19 06:34:17,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 06:34:17,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:34:17,347 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:34:17,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 06:34:17,555 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 06:34:17,556 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:34:17,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:34:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1232449075, now seen corresponding path program 1 times [2023-12-19 06:34:17,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:34:17,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054988592] [2023-12-19 06:34:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:17,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:34:17,581 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:34:17,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777716168] [2023-12-19 06:34:17,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:17,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:34:17,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:34:17,583 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 06:34:17,592 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 06:34:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:34:17,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 06:34:17,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:34:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:34:17,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:34:17,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:34:17,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054988592] [2023-12-19 06:34:17,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:34:17,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777716168] [2023-12-19 06:34:17,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777716168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:34:17,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:34:17,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 06:34:17,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133779127] [2023-12-19 06:34:17,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:34:17,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 06:34:17,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:34:17,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 06:34:17,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 06:34:17,863 INFO L87 Difference]: Start difference. First operand 1715 states and 2658 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:18,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:34:18,290 INFO L93 Difference]: Finished difference Result 2911 states and 4524 transitions. [2023-12-19 06:34:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 06:34:18,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-19 06:34:18,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:34:18,298 INFO L225 Difference]: With dead ends: 2911 [2023-12-19 06:34:18,299 INFO L226 Difference]: Without dead ends: 1454 [2023-12-19 06:34:18,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 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 06:34:18,305 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 68 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:34:18,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 328 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:34:18,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2023-12-19 06:34:18,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1388. [2023-12-19 06:34:18,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1017 states have (on average 1.432645034414946) internal successors, (1457), 1017 states have internal predecessors, (1457), 352 states have call successors, (352), 18 states have call predecessors, (352), 18 states have return successors, (352), 352 states have call predecessors, (352), 352 states have call successors, (352) [2023-12-19 06:34:18,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 2161 transitions. [2023-12-19 06:34:18,518 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 2161 transitions. Word has length 143 [2023-12-19 06:34:18,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:34:18,519 INFO L495 AbstractCegarLoop]: Abstraction has 1388 states and 2161 transitions. [2023-12-19 06:34:18,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 2161 transitions. [2023-12-19 06:34:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 06:34:18,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:34:18,521 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:34:18,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 06:34:18,729 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 06:34:18,730 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:34:18,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:34:18,731 INFO L85 PathProgramCache]: Analyzing trace with hash 634220617, now seen corresponding path program 1 times [2023-12-19 06:34:18,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:34:18,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868649588] [2023-12-19 06:34:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:18,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:34:18,751 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:34:18,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220126705] [2023-12-19 06:34:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:18,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:34:18,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:34:18,753 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 06:34:18,776 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 06:34:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:34:18,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 06:34:18,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:34:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 483 proven. 30 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2023-12-19 06:34:18,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:34:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 33 proven. 30 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-12-19 06:34:19,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:34:19,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868649588] [2023-12-19 06:34:19,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:34:19,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220126705] [2023-12-19 06:34:19,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220126705] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:34:19,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:34:19,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-19 06:34:19,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870367211] [2023-12-19 06:34:19,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:34:19,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 06:34:19,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:34:19,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 06:34:19,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 06:34:19,122 INFO L87 Difference]: Start difference. First operand 1388 states and 2161 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 06:34:19,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:34:19,609 INFO L93 Difference]: Finished difference Result 1983 states and 3037 transitions. [2023-12-19 06:34:19,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 06:34:19,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 143 [2023-12-19 06:34:19,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:34:19,616 INFO L225 Difference]: With dead ends: 1983 [2023-12-19 06:34:19,616 INFO L226 Difference]: Without dead ends: 1219 [2023-12-19 06:34:19,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-19 06:34:19,620 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 363 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:34:19,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 501 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 06:34:19,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-12-19 06:34:19,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1183. [2023-12-19 06:34:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 868 states have (on average 1.3940092165898617) internal successors, (1210), 868 states have internal predecessors, (1210), 286 states have call successors, (286), 28 states have call predecessors, (286), 28 states have return successors, (286), 286 states have call predecessors, (286), 286 states have call successors, (286) [2023-12-19 06:34:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1782 transitions. [2023-12-19 06:34:19,765 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1782 transitions. Word has length 143 [2023-12-19 06:34:19,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:34:19,766 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1782 transitions. [2023-12-19 06:34:19,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-12-19 06:34:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1782 transitions. [2023-12-19 06:34:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 06:34:19,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:34:19,767 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:34:19,780 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 06:34:19,979 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 06:34:19,980 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:34:19,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:34:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash -386847737, now seen corresponding path program 1 times [2023-12-19 06:34:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:34:19,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650204226] [2023-12-19 06:34:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:19,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:34:19,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:34:20,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263752418] [2023-12-19 06:34:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:20,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:34:20,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:34:20,049 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 06:34:20,050 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 06:34:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:34:20,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 06:34:20,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:34:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:34:23,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:34:23,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:34:23,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650204226] [2023-12-19 06:34:23,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:34:23,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263752418] [2023-12-19 06:34:23,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263752418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:34:23,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:34:23,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 06:34:23,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990046946] [2023-12-19 06:34:23,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:34:23,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 06:34:23,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:34:23,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 06:34:23,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:34:23,531 INFO L87 Difference]: Start difference. First operand 1183 states and 1782 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:28,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:34:28,285 INFO L93 Difference]: Finished difference Result 2287 states and 3448 transitions. [2023-12-19 06:34:28,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 06:34:28,286 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-19 06:34:28,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:34:28,292 INFO L225 Difference]: With dead ends: 2287 [2023-12-19 06:34:28,292 INFO L226 Difference]: Without dead ends: 1325 [2023-12-19 06:34:28,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-12-19 06:34:28,297 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 344 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:34:28,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 669 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 06:34:28,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-12-19 06:34:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1217. [2023-12-19 06:34:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 899 states have (on average 1.3870967741935485) internal successors, (1247), 899 states have internal predecessors, (1247), 286 states have call successors, (286), 31 states have call predecessors, (286), 31 states have return successors, (286), 286 states have call predecessors, (286), 286 states have call successors, (286) [2023-12-19 06:34:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1819 transitions. [2023-12-19 06:34:28,470 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1819 transitions. Word has length 143 [2023-12-19 06:34:28,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:34:28,470 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1819 transitions. [2023-12-19 06:34:28,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1819 transitions. [2023-12-19 06:34:28,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 06:34:28,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:34:28,473 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:34:28,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-19 06:34:28,680 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 06:34:28,680 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:34:28,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:34:28,681 INFO L85 PathProgramCache]: Analyzing trace with hash -329589435, now seen corresponding path program 1 times [2023-12-19 06:34:28,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:34:28,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451481660] [2023-12-19 06:34:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:28,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:34:28,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:34:28,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997926441] [2023-12-19 06:34:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:28,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:34:28,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:34:28,706 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 06:34:28,725 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 06:34:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:34:28,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 06:34:28,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:34:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:34:33,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:34:33,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:34:33,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451481660] [2023-12-19 06:34:33,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:34:33,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997926441] [2023-12-19 06:34:33,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997926441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:34:33,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:34:33,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:34:33,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775877127] [2023-12-19 06:34:33,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:34:33,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:34:33,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:34:33,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:34:33,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:34:33,159 INFO L87 Difference]: Start difference. First operand 1217 states and 1819 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:34:38,580 INFO L93 Difference]: Finished difference Result 2317 states and 3477 transitions. [2023-12-19 06:34:38,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 06:34:38,581 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-19 06:34:38,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:34:38,587 INFO L225 Difference]: With dead ends: 2317 [2023-12-19 06:34:38,587 INFO L226 Difference]: Without dead ends: 1325 [2023-12-19 06:34:38,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 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 06:34:38,592 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 297 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:34:38,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 647 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 06:34:38,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-12-19 06:34:38,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1223. [2023-12-19 06:34:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 905 states have (on average 1.3867403314917126) internal successors, (1255), 905 states have internal predecessors, (1255), 286 states have call successors, (286), 31 states have call predecessors, (286), 31 states have return successors, (286), 286 states have call predecessors, (286), 286 states have call successors, (286) [2023-12-19 06:34:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1827 transitions. [2023-12-19 06:34:38,743 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1827 transitions. Word has length 143 [2023-12-19 06:34:38,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:34:38,744 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1827 transitions. [2023-12-19 06:34:38,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:38,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1827 transitions. [2023-12-19 06:34:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 06:34:38,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:34:38,746 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:34:38,759 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 06:34:38,953 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 06:34:38,953 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:34:38,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:34:38,954 INFO L85 PathProgramCache]: Analyzing trace with hash 50486743, now seen corresponding path program 1 times [2023-12-19 06:34:38,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:34:38,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020029195] [2023-12-19 06:34:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:38,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:34:38,972 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:34:38,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317157228] [2023-12-19 06:34:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:38,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:34:38,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:34:38,974 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 06:34:38,997 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 06:34:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:34:39,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 06:34:39,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:34:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:34:40,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:34:40,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:34:40,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020029195] [2023-12-19 06:34:40,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:34:40,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317157228] [2023-12-19 06:34:40,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317157228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:34:40,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:34:40,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 06:34:40,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059119513] [2023-12-19 06:34:40,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:34:40,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 06:34:40,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:34:40,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 06:34:40,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 06:34:40,025 INFO L87 Difference]: Start difference. First operand 1223 states and 1827 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:34:40,774 INFO L93 Difference]: Finished difference Result 1661 states and 2487 transitions. [2023-12-19 06:34:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 06:34:40,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-12-19 06:34:40,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:34:40,781 INFO L225 Difference]: With dead ends: 1661 [2023-12-19 06:34:40,781 INFO L226 Difference]: Without dead ends: 1427 [2023-12-19 06:34:40,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:34:40,783 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 244 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:34:40,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 719 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:34:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2023-12-19 06:34:40,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1251. [2023-12-19 06:34:40,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 933 states have (on average 1.3869239013933548) internal successors, (1294), 933 states have internal predecessors, (1294), 286 states have call successors, (286), 31 states have call predecessors, (286), 31 states have return successors, (286), 286 states have call predecessors, (286), 286 states have call successors, (286) [2023-12-19 06:34:40,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1866 transitions. [2023-12-19 06:34:40,972 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1866 transitions. Word has length 144 [2023-12-19 06:34:40,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:34:40,974 INFO L495 AbstractCegarLoop]: Abstraction has 1251 states and 1866 transitions. [2023-12-19 06:34:40,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:40,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1866 transitions. [2023-12-19 06:34:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 06:34:40,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:34:40,975 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:34:40,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 06:34:41,183 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 06:34:41,184 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:34:41,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:34:41,184 INFO L85 PathProgramCache]: Analyzing trace with hash 107745045, now seen corresponding path program 1 times [2023-12-19 06:34:41,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:34:41,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263027142] [2023-12-19 06:34:41,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:41,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:34:41,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:34:41,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244930997] [2023-12-19 06:34:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:41,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:34:41,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:34:41,219 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 06:34:41,222 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 06:34:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:34:41,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 06:34:41,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:34:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:34:42,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:34:42,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:34:42,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263027142] [2023-12-19 06:34:42,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:34:42,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244930997] [2023-12-19 06:34:42,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244930997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:34:42,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:34:42,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:34:42,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721216328] [2023-12-19 06:34:42,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:34:42,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:34:42,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:34:42,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:34:42,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:34:42,416 INFO L87 Difference]: Start difference. First operand 1251 states and 1866 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:43,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:34:43,722 INFO L93 Difference]: Finished difference Result 2078 states and 3119 transitions. [2023-12-19 06:34:43,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 06:34:43,723 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-12-19 06:34:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:34:43,731 INFO L225 Difference]: With dead ends: 2078 [2023-12-19 06:34:43,731 INFO L226 Difference]: Without dead ends: 1795 [2023-12-19 06:34:43,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 06:34:43,734 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 599 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:34:43,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 874 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 06:34:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2023-12-19 06:34:43,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1517. [2023-12-19 06:34:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1127 states have (on average 1.391304347826087) internal successors, (1568), 1127 states have internal predecessors, (1568), 352 states have call successors, (352), 37 states have call predecessors, (352), 37 states have return successors, (352), 352 states have call predecessors, (352), 352 states have call successors, (352) [2023-12-19 06:34:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2272 transitions. [2023-12-19 06:34:43,958 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2272 transitions. Word has length 144 [2023-12-19 06:34:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:34:43,959 INFO L495 AbstractCegarLoop]: Abstraction has 1517 states and 2272 transitions. [2023-12-19 06:34:43,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2272 transitions. [2023-12-19 06:34:43,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 06:34:43,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:34:43,963 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:34:43,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 06:34:44,175 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 06:34:44,175 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:34:44,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:34:44,176 INFO L85 PathProgramCache]: Analyzing trace with hash -516792805, now seen corresponding path program 1 times [2023-12-19 06:34:44,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:34:44,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927200648] [2023-12-19 06:34:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:44,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:34:44,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:34:44,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387722074] [2023-12-19 06:34:44,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:44,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:34:44,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:34:44,205 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 06:34:44,208 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 06:34:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:34:44,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-19 06:34:44,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:34:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 429 proven. 174 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-12-19 06:34:47,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:34:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:34:51,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:34:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927200648] [2023-12-19 06:34:51,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:34:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387722074] [2023-12-19 06:34:51,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387722074] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 06:34:51,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 06:34:51,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [27] total 35 [2023-12-19 06:34:51,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100263009] [2023-12-19 06:34:51,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:34:51,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 06:34:51,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:34:51,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 06:34:51,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=991, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 06:34:51,616 INFO L87 Difference]: Start difference. First operand 1517 states and 2272 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:55,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:34:55,846 INFO L93 Difference]: Finished difference Result 2672 states and 4010 transitions. [2023-12-19 06:34:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 06:34:55,847 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-12-19 06:34:55,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:34:55,855 INFO L225 Difference]: With dead ends: 2672 [2023-12-19 06:34:55,855 INFO L226 Difference]: Without dead ends: 2178 [2023-12-19 06:34:55,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=321, Invalid=1659, Unknown=0, NotChecked=0, Total=1980 [2023-12-19 06:34:55,859 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 345 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 06:34:55,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 478 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 06:34:55,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2023-12-19 06:34:56,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 1776. [2023-12-19 06:34:56,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1332 states have (on average 1.397897897897898) internal successors, (1862), 1341 states have internal predecessors, (1862), 397 states have call successors, (397), 46 states have call predecessors, (397), 46 states have return successors, (397), 388 states have call predecessors, (397), 397 states have call successors, (397) [2023-12-19 06:34:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2656 transitions. [2023-12-19 06:34:56,079 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2656 transitions. Word has length 144 [2023-12-19 06:34:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:34:56,079 INFO L495 AbstractCegarLoop]: Abstraction has 1776 states and 2656 transitions. [2023-12-19 06:34:56,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2656 transitions. [2023-12-19 06:34:56,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 06:34:56,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:34:56,081 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:34:56,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 06:34:56,289 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 06:34:56,289 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:34:56,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:34:56,290 INFO L85 PathProgramCache]: Analyzing trace with hash -459534503, now seen corresponding path program 1 times [2023-12-19 06:34:56,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:34:56,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904503742] [2023-12-19 06:34:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:56,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:34:56,315 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:34:56,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222260463] [2023-12-19 06:34:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:56,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:34:56,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:34:56,343 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 06:34:56,351 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 06:34:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:34:56,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 06:34:56,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:34:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:34:57,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:34:57,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:34:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904503742] [2023-12-19 06:34:57,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:34:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222260463] [2023-12-19 06:34:57,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222260463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:34:57,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:34:57,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:34:57,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135544975] [2023-12-19 06:34:57,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:34:57,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:34:57,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:34:57,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:34:57,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:34:57,554 INFO L87 Difference]: Start difference. First operand 1776 states and 2656 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:59,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:34:59,006 INFO L93 Difference]: Finished difference Result 3474 states and 5217 transitions. [2023-12-19 06:34:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 06:34:59,006 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-12-19 06:34:59,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:34:59,019 INFO L225 Difference]: With dead ends: 3474 [2023-12-19 06:34:59,019 INFO L226 Difference]: Without dead ends: 2777 [2023-12-19 06:34:59,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 06:34:59,022 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 464 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 06:34:59,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 766 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 06:34:59,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2023-12-19 06:34:59,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2054. [2023-12-19 06:34:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1535 states have (on average 1.3947882736156352) internal successors, (2141), 1544 states have internal predecessors, (2141), 463 states have call successors, (463), 55 states have call predecessors, (463), 55 states have return successors, (463), 454 states have call predecessors, (463), 463 states have call successors, (463) [2023-12-19 06:34:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3067 transitions. [2023-12-19 06:34:59,263 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3067 transitions. Word has length 144 [2023-12-19 06:34:59,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:34:59,264 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3067 transitions. [2023-12-19 06:34:59,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:34:59,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3067 transitions. [2023-12-19 06:34:59,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 06:34:59,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:34:59,267 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:34:59,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 06:34:59,474 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 06:34:59,475 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:34:59,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:34:59,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1527040313, now seen corresponding path program 1 times [2023-12-19 06:34:59,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:34:59,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830888148] [2023-12-19 06:34:59,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:59,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:34:59,494 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:34:59,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056986149] [2023-12-19 06:34:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:34:59,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:34:59,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:34:59,498 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 06:34:59,499 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 06:34:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:34:59,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 06:34:59,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:35:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:35:00,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:35:00,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:35:00,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830888148] [2023-12-19 06:35:00,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:35:00,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056986149] [2023-12-19 06:35:00,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056986149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:35:00,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:35:00,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 06:35:00,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998697126] [2023-12-19 06:35:00,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:35:00,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 06:35:00,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:35:00,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 06:35:00,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-19 06:35:00,899 INFO L87 Difference]: Start difference. First operand 2054 states and 3067 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:35:02,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:35:02,479 INFO L93 Difference]: Finished difference Result 3955 states and 5906 transitions. [2023-12-19 06:35:02,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 06:35:02,480 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-12-19 06:35:02,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:35:02,489 INFO L225 Difference]: With dead ends: 3955 [2023-12-19 06:35:02,490 INFO L226 Difference]: Without dead ends: 2132 [2023-12-19 06:35:02,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-12-19 06:35:02,495 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 255 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:35:02,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 512 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 06:35:02,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2023-12-19 06:35:02,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2050. [2023-12-19 06:35:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 1531 states have (on average 1.3905943827563685) internal successors, (2129), 1540 states have internal predecessors, (2129), 463 states have call successors, (463), 55 states have call predecessors, (463), 55 states have return successors, (463), 454 states have call predecessors, (463), 463 states have call successors, (463) [2023-12-19 06:35:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 3055 transitions. [2023-12-19 06:35:02,797 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 3055 transitions. Word has length 144 [2023-12-19 06:35:02,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:35:02,798 INFO L495 AbstractCegarLoop]: Abstraction has 2050 states and 3055 transitions. [2023-12-19 06:35:02,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:35:02,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 3055 transitions. [2023-12-19 06:35:02,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 06:35:02,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:35:02,800 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:35:02,811 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 06:35:03,008 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 06:35:03,009 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:35:03,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:35:03,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1469782011, now seen corresponding path program 1 times [2023-12-19 06:35:03,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:35:03,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253300816] [2023-12-19 06:35:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:35:03,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:35:03,030 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:35:03,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196241477] [2023-12-19 06:35:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:35:03,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:35:03,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:35:03,032 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 06:35:03,051 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 06:35:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:35:03,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 06:35:03,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:35:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:35:08,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:35:08,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:35:08,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253300816] [2023-12-19 06:35:08,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:35:08,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196241477] [2023-12-19 06:35:08,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196241477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:35:08,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:35:08,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:35:08,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83849720] [2023-12-19 06:35:08,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:35:08,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:35:08,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:35:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:35:08,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:35:08,265 INFO L87 Difference]: Start difference. First operand 2050 states and 3055 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:35:16,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:35:16,322 INFO L93 Difference]: Finished difference Result 3080 states and 4619 transitions. [2023-12-19 06:35:16,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 06:35:16,322 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-12-19 06:35:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:35:16,344 INFO L225 Difference]: With dead ends: 3080 [2023-12-19 06:35:16,344 INFO L226 Difference]: Without dead ends: 2158 [2023-12-19 06:35:16,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 06:35:16,347 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 316 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:35:16,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 873 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-19 06:35:16,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2023-12-19 06:35:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 2060. [2023-12-19 06:35:16,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1541 states have (on average 1.3906554185593771) internal successors, (2143), 1550 states have internal predecessors, (2143), 463 states have call successors, (463), 55 states have call predecessors, (463), 55 states have return successors, (463), 454 states have call predecessors, (463), 463 states have call successors, (463) [2023-12-19 06:35:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3069 transitions. [2023-12-19 06:35:16,617 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3069 transitions. Word has length 144 [2023-12-19 06:35:16,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:35:16,617 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 3069 transitions. [2023-12-19 06:35:16,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:35:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3069 transitions. [2023-12-19 06:35:16,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 06:35:16,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:35:16,619 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:35:16,629 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 06:35:16,829 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 06:35:16,830 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:35:16,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:35:16,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1210986687, now seen corresponding path program 1 times [2023-12-19 06:35:16,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:35:16,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116759976] [2023-12-19 06:35:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:35:16,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:35:16,844 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:35:16,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534640312] [2023-12-19 06:35:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:35:16,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:35:16,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:35:16,846 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 06:35:16,855 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 06:35:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:35:16,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 06:35:16,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:35:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:35:21,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:35:21,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:35:21,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116759976] [2023-12-19 06:35:21,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:35:21,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534640312] [2023-12-19 06:35:21,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534640312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:35:21,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:35:21,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 06:35:21,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066975431] [2023-12-19 06:35:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:35:21,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 06:35:21,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:35:21,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 06:35:21,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 06:35:21,656 INFO L87 Difference]: Start difference. First operand 2060 states and 3069 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:35:27,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:35:27,935 INFO L93 Difference]: Finished difference Result 3980 states and 5958 transitions. [2023-12-19 06:35:27,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 06:35:27,936 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2023-12-19 06:35:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:35:27,942 INFO L225 Difference]: With dead ends: 3980 [2023-12-19 06:35:27,942 INFO L226 Difference]: Without dead ends: 2164 [2023-12-19 06:35:27,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 06:35:27,947 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 305 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 06:35:27,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 609 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 06:35:27,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2023-12-19 06:35:28,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2070. [2023-12-19 06:35:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1551 states have (on average 1.390715667311412) internal successors, (2157), 1560 states have internal predecessors, (2157), 463 states have call successors, (463), 55 states have call predecessors, (463), 55 states have return successors, (463), 454 states have call predecessors, (463), 463 states have call successors, (463) [2023-12-19 06:35:28,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3083 transitions. [2023-12-19 06:35:28,174 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3083 transitions. Word has length 144 [2023-12-19 06:35:28,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:35:28,175 INFO L495 AbstractCegarLoop]: Abstraction has 2070 states and 3083 transitions. [2023-12-19 06:35:28,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:35:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3083 transitions. [2023-12-19 06:35:28,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 06:35:28,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:35:28,176 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:35:28,182 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 06:35:28,376 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 06:35:28,377 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:35:28,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:35:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1013417344, now seen corresponding path program 1 times [2023-12-19 06:35:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:35:28,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415151436] [2023-12-19 06:35:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:35:28,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:35:28,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:35:28,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983104954] [2023-12-19 06:35:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:35:28,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:35:28,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:35:28,400 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 06:35:28,408 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 06:35:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:35:28,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 06:35:28,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:35:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 471 proven. 36 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2023-12-19 06:35:28,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 06:35:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 27 proven. 36 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-12-19 06:35:28,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:35:28,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415151436] [2023-12-19 06:35:28,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:35:28,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983104954] [2023-12-19 06:35:28,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983104954] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 06:35:28,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 06:35:28,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 06:35:28,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539829498] [2023-12-19 06:35:28,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 06:35:28,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 06:35:28,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:35:28,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 06:35:28,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-19 06:35:28,958 INFO L87 Difference]: Start difference. First operand 2070 states and 3083 transitions. Second operand has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-12-19 06:35:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:35:31,401 INFO L93 Difference]: Finished difference Result 7132 states and 10425 transitions. [2023-12-19 06:35:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-19 06:35:31,401 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 145 [2023-12-19 06:35:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:35:31,416 INFO L225 Difference]: With dead ends: 7132 [2023-12-19 06:35:31,416 INFO L226 Difference]: Without dead ends: 5801 [2023-12-19 06:35:31,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=904, Invalid=3386, Unknown=0, NotChecked=0, Total=4290 [2023-12-19 06:35:31,421 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1648 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 892 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 892 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 06:35:31,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 1515 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [892 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 06:35:31,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2023-12-19 06:35:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 4316. [2023-12-19 06:35:31,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4316 states, 3169 states have (on average 1.3692016408961818) internal successors, (4339), 3209 states have internal predecessors, (4339), 986 states have call successors, (986), 160 states have call predecessors, (986), 160 states have return successors, (986), 946 states have call predecessors, (986), 986 states have call successors, (986) [2023-12-19 06:35:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4316 states to 4316 states and 6311 transitions. [2023-12-19 06:35:31,931 INFO L78 Accepts]: Start accepts. Automaton has 4316 states and 6311 transitions. Word has length 145 [2023-12-19 06:35:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:35:31,931 INFO L495 AbstractCegarLoop]: Abstraction has 4316 states and 6311 transitions. [2023-12-19 06:35:31,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-12-19 06:35:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4316 states and 6311 transitions. [2023-12-19 06:35:31,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 06:35:31,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:35:31,933 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:35:31,942 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 06:35:32,142 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 06:35:32,143 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:35:32,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:35:32,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1355636636, now seen corresponding path program 1 times [2023-12-19 06:35:32,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:35:32,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445881316] [2023-12-19 06:35:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:35:32,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:35:32,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:35:32,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684881373] [2023-12-19 06:35:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:35:32,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:35:32,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:35:32,170 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 06:35:32,192 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 06:35:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:35:32,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 06:35:32,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 06:36:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-19 06:36:09,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 06:36:09,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 06:36:09,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445881316] [2023-12-19 06:36:09,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 06:36:09,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684881373] [2023-12-19 06:36:09,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684881373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 06:36:09,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 06:36:09,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 06:36:09,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476933095] [2023-12-19 06:36:09,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 06:36:09,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 06:36:09,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 06:36:09,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 06:36:09,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-19 06:36:09,964 INFO L87 Difference]: Start difference. First operand 4316 states and 6311 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:36:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 06:36:11,273 INFO L93 Difference]: Finished difference Result 8877 states and 12922 transitions. [2023-12-19 06:36:11,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 06:36:11,273 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 146 [2023-12-19 06:36:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 06:36:11,284 INFO L225 Difference]: With dead ends: 8877 [2023-12-19 06:36:11,284 INFO L226 Difference]: Without dead ends: 4628 [2023-12-19 06:36:11,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-12-19 06:36:11,293 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 321 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 06:36:11,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 761 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 06:36:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2023-12-19 06:36:11,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4362. [2023-12-19 06:36:11,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 3215 states have (on average 1.3673405909797822) internal successors, (4396), 3255 states have internal predecessors, (4396), 986 states have call successors, (986), 160 states have call predecessors, (986), 160 states have return successors, (986), 946 states have call predecessors, (986), 986 states have call successors, (986) [2023-12-19 06:36:11,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 6368 transitions. [2023-12-19 06:36:11,785 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 6368 transitions. Word has length 146 [2023-12-19 06:36:11,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 06:36:11,786 INFO L495 AbstractCegarLoop]: Abstraction has 4362 states and 6368 transitions. [2023-12-19 06:36:11,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-19 06:36:11,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 6368 transitions. [2023-12-19 06:36:11,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 06:36:11,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 06:36:11,787 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:36:11,805 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 06:36:11,998 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 06:36:11,999 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 06:36:12,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 06:36:12,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1660837600, now seen corresponding path program 1 times [2023-12-19 06:36:12,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 06:36:12,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156311485] [2023-12-19 06:36:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:36:12,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 06:36:12,029 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 06:36:12,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [443312907] [2023-12-19 06:36:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 06:36:12,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:36:12,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 06:36:12,037 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 06:36:12,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 06:36:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 06:36:12,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 06:36:12,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-19 06:47:45,890 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 06:47:45,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 06:47:45,908 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 06:47:45,908 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 06:47:46,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 06:47:46,096 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 147 with TraceHistMax 22,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-42-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-2-2-1 context. [2023-12-19 06:47:46,101 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, 1] [2023-12-19 06:47:46,104 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 06:47:46,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 06:47:46 BoogieIcfgContainer [2023-12-19 06:47:46,106 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 06:47:46,106 INFO L158 Benchmark]: Toolchain (without parser) took 848487.19ms. Allocated memory was 202.4MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 151.4MB in the beginning and 1.1GB in the end (delta: -982.0MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-19 06:47:46,106 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 202.4MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 06:47:46,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.61ms. Allocated memory is still 202.4MB. Free memory was 151.2MB in the beginning and 136.7MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-19 06:47:46,107 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.90ms. Allocated memory is still 202.4MB. Free memory was 136.5MB in the beginning and 132.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 06:47:46,107 INFO L158 Benchmark]: Boogie Preprocessor took 78.41ms. Allocated memory is still 202.4MB. Free memory was 132.6MB in the beginning and 127.2MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 06:47:46,107 INFO L158 Benchmark]: RCFGBuilder took 709.60ms. Allocated memory was 202.4MB in the beginning and 329.3MB in the end (delta: 126.9MB). Free memory was 127.2MB in the beginning and 288.9MB in the end (delta: -161.7MB). Peak memory consumption was 32.0MB. Max. memory is 8.0GB. [2023-12-19 06:47:46,108 INFO L158 Benchmark]: TraceAbstraction took 847245.68ms. Allocated memory was 329.3MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 288.4MB in the beginning and 1.1GB in the end (delta: -845.1MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-19 06:47:46,109 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 202.4MB. Free memory is still 152.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 348.61ms. Allocated memory is still 202.4MB. Free memory was 151.2MB in the beginning and 136.7MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 98.90ms. Allocated memory is still 202.4MB. Free memory was 136.5MB in the beginning and 132.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 78.41ms. Allocated memory is still 202.4MB. Free memory was 132.6MB in the beginning and 127.2MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 709.60ms. Allocated memory was 202.4MB in the beginning and 329.3MB in the end (delta: 126.9MB). Free memory was 127.2MB in the beginning and 288.9MB in the end (delta: -161.7MB). Peak memory consumption was 32.0MB. Max. memory is 8.0GB. * TraceAbstraction took 847245.68ms. Allocated memory was 329.3MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 288.4MB in the beginning and 1.1GB in the end (delta: -845.1MB). Peak memory consumption was 1.2GB. 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 147 with TraceHistMax 22,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-42-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 847.2s, OverallIterations: 22, TraceHistogramMax: 22, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 46.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7980 SdHoareTripleChecker+Valid, 22.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7927 mSDsluCounter, 13587 SdHoareTripleChecker+Invalid, 20.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10491 mSDsCounter, 1688 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8867 IncrementalHoareTripleChecker+Invalid, 10555 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1688 mSolverCounterUnsat, 3096 mSDtfsCounter, 8867 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3978 GetRequests, 3531 SyntacticMatches, 1 SemanticMatches, 446 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3385 ImplicationChecksByTransitivity, 38.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4362occurred in iteration=21, InterpolantAutomatonStates: 351, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 4947 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 94.2s InterpolantComputationTime, 3150 NumberOfCodeBlocks, 3150 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 3700 ConstructedInterpolants, 2 QuantifiedInterpolants, 32910 SizeOfPredicates, 258 NumberOfNonLiveVariables, 8120 ConjunctsInSsa, 388 ConjunctsInUnsatCore, 26 InterpolantComputations, 17 PerfectInterpolantSequences, 23526/24024 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