/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 03:42:22,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 03:42:22,870 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 03:42:22,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 03:42:22,873 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 03:42:22,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 03:42:22,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 03:42:22,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 03:42:22,887 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 03:42:22,887 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 03:42:22,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 03:42:22,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 03:42:22,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 03:42:22,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 03:42:22,888 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 03:42:22,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 03:42:22,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 03:42:22,889 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 03:42:22,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 03:42:22,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 03:42:22,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 03:42:22,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 03:42:22,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 03:42:22,891 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 03:42:22,894 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 03:42:22,894 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 03:42:22,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 03:42:22,895 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 03:42:22,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 03:42:22,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 03:42:22,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 03:42:22,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 03:42:22,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:42:22,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 03:42:22,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 03:42:22,896 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 03:42:22,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 03:42:22,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 03:42:22,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 03:42:22,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 03:42:22,898 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 03:42:22,901 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 03:42:22,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 03:42:22,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 03:42:23,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 03:42:23,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 03:42:23,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 03:42:23,097 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 03:42:23,098 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 03:42:23,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i [2023-12-16 03:42:24,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 03:42:24,358 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 03:42:24,359 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i [2023-12-16 03:42:24,365 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4616456a/8925d9e4bbdf4245a347f2ab139818b4/FLAG11492b18a [2023-12-16 03:42:24,376 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4616456a/8925d9e4bbdf4245a347f2ab139818b4 [2023-12-16 03:42:24,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 03:42:24,379 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 03:42:24,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 03:42:24,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 03:42:24,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 03:42:24,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d108c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24, skipping insertion in model container [2023-12-16 03:42:24,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,420 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 03:42:24,513 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_loopvsstraightlinecode_100-while_file-63.i[916,929] [2023-12-16 03:42:24,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:42:24,581 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 03:42:24,589 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_loopvsstraightlinecode_100-while_file-63.i[916,929] [2023-12-16 03:42:24,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:42:24,624 INFO L206 MainTranslator]: Completed translation [2023-12-16 03:42:24,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24 WrapperNode [2023-12-16 03:42:24,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 03:42:24,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 03:42:24,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 03:42:24,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 03:42:24,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,684 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 210 [2023-12-16 03:42:24,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 03:42:24,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 03:42:24,685 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 03:42:24,685 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 03:42:24,692 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,711 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]. [2023-12-16 03:42:24,712 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 03:42:24,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 03:42:24,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 03:42:24,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 03:42:24,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (1/1) ... [2023-12-16 03:42:24,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:42:24,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:24,775 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) [2023-12-16 03:42:24,791 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 [2023-12-16 03:42:24,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 03:42:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 03:42:24,806 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 03:42:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 03:42:24,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 03:42:24,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 03:42:24,886 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 03:42:24,887 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 03:42:25,218 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 03:42:25,256 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 03:42:25,257 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 03:42:25,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:42:25 BoogieIcfgContainer [2023-12-16 03:42:25,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 03:42:25,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 03:42:25,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 03:42:25,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 03:42:25,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:42:24" (1/3) ... [2023-12-16 03:42:25,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0c4e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:42:25, skipping insertion in model container [2023-12-16 03:42:25,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:24" (2/3) ... [2023-12-16 03:42:25,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0c4e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:42:25, skipping insertion in model container [2023-12-16 03:42:25,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:42:25" (3/3) ... [2023-12-16 03:42:25,278 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-63.i [2023-12-16 03:42:25,289 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 03:42:25,289 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 03:42:25,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 03:42:25,350 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;@2c639193, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 03:42:25,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 03:42:25,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 54 states have (on average 1.537037037037037) internal successors, (83), 55 states have internal predecessors, (83), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 03:42:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-16 03:42:25,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:25,408 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:25,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:42:25,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:42:25,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1811118205, now seen corresponding path program 1 times [2023-12-16 03:42:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:42:25,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38846980] [2023-12-16 03:42:25,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:25,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:42:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:25,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:42:25,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38846980] [2023-12-16 03:42:25,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 03:42:25,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727917399] [2023-12-16 03:42:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:25,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:42:25,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:25,721 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) [2023-12-16 03:42:25,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 03:42:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:26,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 03:42:26,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:42:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-12-16 03:42:26,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:42:26,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727917399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:42:26,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:42:26,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:42:26,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314050377] [2023-12-16 03:42:26,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:42:26,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 03:42:26,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:42:26,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 03:42:26,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:42:26,201 INFO L87 Difference]: Start difference. First operand has 77 states, 54 states have (on average 1.537037037037037) internal successors, (83), 55 states have internal predecessors, (83), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 03:42:26,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:42:26,243 INFO L93 Difference]: Finished difference Result 151 states and 264 transitions. [2023-12-16 03:42:26,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 03:42:26,245 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2023-12-16 03:42:26,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:42:26,250 INFO L225 Difference]: With dead ends: 151 [2023-12-16 03:42:26,250 INFO L226 Difference]: Without dead ends: 75 [2023-12-16 03:42:26,253 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 [2023-12-16 03:42:26,254 INFO L413 NwaCegarLoop]: 113 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, 113 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 [2023-12-16 03:42:26,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:42:26,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-16 03:42:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-16 03:42:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 53 states have internal predecessors, (76), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 03:42:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 116 transitions. [2023-12-16 03:42:26,294 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 116 transitions. Word has length 141 [2023-12-16 03:42:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:42:26,294 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 116 transitions. [2023-12-16 03:42:26,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-16 03:42:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 116 transitions. [2023-12-16 03:42:26,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-16 03:42:26,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:26,301 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:26,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 03:42:26,501 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 [2023-12-16 03:42:26,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:42:26,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:42:26,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1231296569, now seen corresponding path program 1 times [2023-12-16 03:42:26,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:42:26,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118501954] [2023-12-16 03:42:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:26,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:42:26,537 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:42:26,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307267570] [2023-12-16 03:42:26,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:26,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:42:26,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:26,545 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) [2023-12-16 03:42:26,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 03:42:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:26,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:42:26,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:42:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 03:42:26,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:42:26,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:42:26,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118501954] [2023-12-16 03:42:26,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:42:26,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307267570] [2023-12-16 03:42:26,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307267570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:42:26,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:42:26,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:42:26,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726530499] [2023-12-16 03:42:26,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:42:26,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:42:26,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:42:26,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:42:26,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:42:26,813 INFO L87 Difference]: Start difference. First operand 75 states and 116 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:26,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:42:26,834 INFO L93 Difference]: Finished difference Result 150 states and 233 transitions. [2023-12-16 03:42:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:42:26,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2023-12-16 03:42:26,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:42:26,841 INFO L225 Difference]: With dead ends: 150 [2023-12-16 03:42:26,841 INFO L226 Difference]: Without dead ends: 76 [2023-12-16 03:42:26,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:42:26,842 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 0 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:42:26,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 219 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:42:26,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-16 03:42:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-16 03:42:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.4259259259259258) internal successors, (77), 54 states have internal predecessors, (77), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 03:42:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 117 transitions. [2023-12-16 03:42:26,850 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 117 transitions. Word has length 141 [2023-12-16 03:42:26,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:42:26,851 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 117 transitions. [2023-12-16 03:42:26,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 117 transitions. [2023-12-16 03:42:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-16 03:42:26,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:26,852 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:26,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 03:42:27,061 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 [2023-12-16 03:42:27,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:42:27,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:42:27,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1211958745, now seen corresponding path program 1 times [2023-12-16 03:42:27,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:42:27,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235709182] [2023-12-16 03:42:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:27,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:42:27,105 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:42:27,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140179063] [2023-12-16 03:42:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:27,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:42:27,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:27,124 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) [2023-12-16 03:42:27,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 03:42:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:27,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:42:27,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:42:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 03:42:27,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:42:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:42:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235709182] [2023-12-16 03:42:27,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:42:27,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140179063] [2023-12-16 03:42:27,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140179063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:42:27,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:42:27,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:42:27,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123817118] [2023-12-16 03:42:27,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:42:27,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:42:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:42:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:42:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:42:27,294 INFO L87 Difference]: Start difference. First operand 76 states and 117 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:27,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:42:27,346 INFO L93 Difference]: Finished difference Result 155 states and 238 transitions. [2023-12-16 03:42:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 03:42:27,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2023-12-16 03:42:27,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:42:27,354 INFO L225 Difference]: With dead ends: 155 [2023-12-16 03:42:27,354 INFO L226 Difference]: Without dead ends: 80 [2023-12-16 03:42:27,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:42:27,356 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 3 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:42:27,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 328 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:42:27,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-16 03:42:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2023-12-16 03:42:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 56 states have internal predecessors, (79), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 03:42:27,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 119 transitions. [2023-12-16 03:42:27,362 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 119 transitions. Word has length 141 [2023-12-16 03:42:27,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:42:27,363 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 119 transitions. [2023-12-16 03:42:27,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 119 transitions. [2023-12-16 03:42:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-16 03:42:27,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:27,364 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:27,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 03:42:27,574 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 [2023-12-16 03:42:27,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:42:27,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:42:27,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1212018327, now seen corresponding path program 1 times [2023-12-16 03:42:27,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:42:27,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043071835] [2023-12-16 03:42:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:27,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:42:27,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:42:27,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394022980] [2023-12-16 03:42:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:27,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:42:27,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:27,602 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) [2023-12-16 03:42:27,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 03:42:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:27,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:42:27,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:42:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 397 proven. 30 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-16 03:42:27,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:42:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-16 03:42:27,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:42:27,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043071835] [2023-12-16 03:42:27,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:42:27,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394022980] [2023-12-16 03:42:27,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394022980] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:42:27,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:42:27,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:42:27,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540385700] [2023-12-16 03:42:27,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:42:27,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:42:27,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:42:27,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:42:27,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:42:27,936 INFO L87 Difference]: Start difference. First operand 78 states and 119 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-16 03:42:28,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:42:28,202 INFO L93 Difference]: Finished difference Result 162 states and 243 transitions. [2023-12-16 03:42:28,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:42:28,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 141 [2023-12-16 03:42:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:42:28,204 INFO L225 Difference]: With dead ends: 162 [2023-12-16 03:42:28,204 INFO L226 Difference]: Without dead ends: 85 [2023-12-16 03:42:28,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:42:28,205 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 121 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:42:28,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 193 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:42:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-16 03:42:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2023-12-16 03:42:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 58 states have internal predecessors, (78), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 03:42:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 118 transitions. [2023-12-16 03:42:28,212 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 118 transitions. Word has length 141 [2023-12-16 03:42:28,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:42:28,212 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 118 transitions. [2023-12-16 03:42:28,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-16 03:42:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 118 transitions. [2023-12-16 03:42:28,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-16 03:42:28,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:28,214 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:28,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 03:42:28,419 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 [2023-12-16 03:42:28,420 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:42:28,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:42:28,420 INFO L85 PathProgramCache]: Analyzing trace with hash 198285977, now seen corresponding path program 1 times [2023-12-16 03:42:28,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:42:28,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377403178] [2023-12-16 03:42:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:28,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:42:28,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:42:28,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147239920] [2023-12-16 03:42:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:28,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:42:28,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:28,448 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) [2023-12-16 03:42:28,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 03:42:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:28,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-16 03:42:28,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:42:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 449 proven. 138 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-12-16 03:42:29,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:42:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-16 03:42:30,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:42:30,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377403178] [2023-12-16 03:42:30,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:42:30,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147239920] [2023-12-16 03:42:30,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147239920] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:42:30,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:42:30,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 25 [2023-12-16 03:42:30,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522992117] [2023-12-16 03:42:30,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:42:30,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 03:42:30,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:42:30,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 03:42:30,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2023-12-16 03:42:30,187 INFO L87 Difference]: Start difference. First operand 81 states and 118 transitions. Second operand has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 6 states have call successors, (36), 4 states have call predecessors, (36), 8 states have return successors, (38), 6 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-16 03:42:33,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:42:33,289 INFO L93 Difference]: Finished difference Result 465 states and 607 transitions. [2023-12-16 03:42:33,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-16 03:42:33,289 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 6 states have call successors, (36), 4 states have call predecessors, (36), 8 states have return successors, (38), 6 states have call predecessors, (38), 6 states have call successors, (38) Word has length 141 [2023-12-16 03:42:33,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:42:33,291 INFO L225 Difference]: With dead ends: 465 [2023-12-16 03:42:33,291 INFO L226 Difference]: Without dead ends: 385 [2023-12-16 03:42:33,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2404 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1760, Invalid=6072, Unknown=0, NotChecked=0, Total=7832 [2023-12-16 03:42:33,294 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 783 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 03:42:33,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 677 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 03:42:33,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-16 03:42:33,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 145. [2023-12-16 03:42:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 116 states have (on average 1.353448275862069) internal successors, (157), 117 states have internal predecessors, (157), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-16 03:42:33,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 201 transitions. [2023-12-16 03:42:33,331 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 201 transitions. Word has length 141 [2023-12-16 03:42:33,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:42:33,331 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 201 transitions. [2023-12-16 03:42:33,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 6 states have call successors, (36), 4 states have call predecessors, (36), 8 states have return successors, (38), 6 states have call predecessors, (38), 6 states have call successors, (38) [2023-12-16 03:42:33,331 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 201 transitions. [2023-12-16 03:42:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-16 03:42:33,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:33,353 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:33,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 03:42:33,559 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 [2023-12-16 03:42:33,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:42:33,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:42:33,559 INFO L85 PathProgramCache]: Analyzing trace with hash -481772393, now seen corresponding path program 1 times [2023-12-16 03:42:33,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:42:33,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689098811] [2023-12-16 03:42:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:33,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:42:33,630 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:42:33,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242024313] [2023-12-16 03:42:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:33,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:42:33,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:33,635 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) [2023-12-16 03:42:33,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 03:42:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:33,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-16 03:42:33,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:42:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 456 proven. 141 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-12-16 03:42:37,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:42:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 03:42:41,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:42:41,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689098811] [2023-12-16 03:42:41,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:42:41,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242024313] [2023-12-16 03:42:41,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242024313] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 03:42:41,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 03:42:41,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [23] total 31 [2023-12-16 03:42:41,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485453248] [2023-12-16 03:42:41,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:42:41,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 03:42:41,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:42:41,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 03:42:41,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2023-12-16 03:42:41,774 INFO L87 Difference]: Start difference. First operand 145 states and 201 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:42,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:42:42,756 INFO L93 Difference]: Finished difference Result 413 states and 577 transitions. [2023-12-16 03:42:42,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 03:42:42,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2023-12-16 03:42:42,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:42:42,759 INFO L225 Difference]: With dead ends: 413 [2023-12-16 03:42:42,759 INFO L226 Difference]: Without dead ends: 269 [2023-12-16 03:42:42,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 03:42:42,760 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 135 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 03:42:42,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 421 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 03:42:42,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-16 03:42:42,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 183. [2023-12-16 03:42:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 154 states have (on average 1.3896103896103895) internal successors, (214), 155 states have internal predecessors, (214), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-16 03:42:42,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 258 transitions. [2023-12-16 03:42:42,773 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 258 transitions. Word has length 141 [2023-12-16 03:42:42,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:42:42,774 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 258 transitions. [2023-12-16 03:42:42,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 258 transitions. [2023-12-16 03:42:42,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-16 03:42:42,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:42,775 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:42,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 03:42:42,981 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 [2023-12-16 03:42:42,981 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:42:42,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:42:42,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2124251161, now seen corresponding path program 1 times [2023-12-16 03:42:42,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:42:42,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981791140] [2023-12-16 03:42:42,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:42,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:42:42,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:42:42,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762228200] [2023-12-16 03:42:42,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:42,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:42:42,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:42,997 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) [2023-12-16 03:42:43,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 03:42:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:43,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 03:42:43,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:42:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 251 proven. 138 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-12-16 03:42:43,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:42:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-16 03:42:43,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:42:43,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981791140] [2023-12-16 03:42:43,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:42:43,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762228200] [2023-12-16 03:42:43,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762228200] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:42:43,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:42:43,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-12-16 03:42:43,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818275336] [2023-12-16 03:42:43,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:42:43,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 03:42:43,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:42:43,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 03:42:43,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-16 03:42:43,931 INFO L87 Difference]: Start difference. First operand 183 states and 258 transitions. Second operand has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 21 states have internal predecessors, (91), 6 states have call successors, (39), 4 states have call predecessors, (39), 10 states have return successors, (40), 5 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-16 03:42:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:42:44,406 INFO L93 Difference]: Finished difference Result 389 states and 534 transitions. [2023-12-16 03:42:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 03:42:44,408 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 21 states have internal predecessors, (91), 6 states have call successors, (39), 4 states have call predecessors, (39), 10 states have return successors, (40), 5 states have call predecessors, (40), 6 states have call successors, (40) Word has length 141 [2023-12-16 03:42:44,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:42:44,409 INFO L225 Difference]: With dead ends: 389 [2023-12-16 03:42:44,409 INFO L226 Difference]: Without dead ends: 207 [2023-12-16 03:42:44,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=310, Invalid=746, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 03:42:44,411 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 374 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:42:44,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 254 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:42:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-16 03:42:44,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 135. [2023-12-16 03:42:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 107 states have (on average 1.3177570093457944) internal successors, (141), 107 states have internal predecessors, (141), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 03:42:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 181 transitions. [2023-12-16 03:42:44,427 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 181 transitions. Word has length 141 [2023-12-16 03:42:44,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:42:44,427 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 181 transitions. [2023-12-16 03:42:44,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 21 states have internal predecessors, (91), 6 states have call successors, (39), 4 states have call predecessors, (39), 10 states have return successors, (40), 5 states have call predecessors, (40), 6 states have call successors, (40) [2023-12-16 03:42:44,427 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 181 transitions. [2023-12-16 03:42:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 03:42:44,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:44,428 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:44,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 03:42:44,640 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 [2023-12-16 03:42:44,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:42:44,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:42:44,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1987707027, now seen corresponding path program 1 times [2023-12-16 03:42:44,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:42:44,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422066954] [2023-12-16 03:42:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:44,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:42:44,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:42:44,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260441435] [2023-12-16 03:42:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:44,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:42:44,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:44,685 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) [2023-12-16 03:42:44,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 03:42:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:44,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-16 03:42:44,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:42:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 293 proven. 87 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-12-16 03:42:46,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:42:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 03:42:49,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:42:49,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422066954] [2023-12-16 03:42:49,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:42:49,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260441435] [2023-12-16 03:42:49,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260441435] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 03:42:49,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 03:42:49,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 24 [2023-12-16 03:42:49,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799080257] [2023-12-16 03:42:49,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:42:49,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 03:42:49,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:42:49,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 03:42:49,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2023-12-16 03:42:49,257 INFO L87 Difference]: Start difference. First operand 135 states and 181 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:53,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:42:53,174 INFO L93 Difference]: Finished difference Result 473 states and 631 transitions. [2023-12-16 03:42:53,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 03:42:53,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-16 03:42:53,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:42:53,182 INFO L225 Difference]: With dead ends: 473 [2023-12-16 03:42:53,182 INFO L226 Difference]: Without dead ends: 339 [2023-12-16 03:42:53,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=386, Invalid=1684, Unknown=0, NotChecked=0, Total=2070 [2023-12-16 03:42:53,183 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 371 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 03:42:53,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 556 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 03:42:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-12-16 03:42:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 137. [2023-12-16 03:42:53,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 109 states have (on average 1.3211009174311927) internal successors, (144), 109 states have internal predecessors, (144), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 03:42:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2023-12-16 03:42:53,194 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 142 [2023-12-16 03:42:53,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:42:53,194 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2023-12-16 03:42:53,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:53,194 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2023-12-16 03:42:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 03:42:53,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:53,195 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:53,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 03:42:53,400 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 [2023-12-16 03:42:53,400 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:42:53,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:42:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1178360401, now seen corresponding path program 1 times [2023-12-16 03:42:53,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:42:53,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262057194] [2023-12-16 03:42:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:53,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:42:53,418 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:42:53,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84399441] [2023-12-16 03:42:53,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:53,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:42:53,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:53,420 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) [2023-12-16 03:42:53,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 03:42:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:53,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:42:53,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:42:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 03:42:53,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:42:53,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:42:53,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262057194] [2023-12-16 03:42:53,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:42:53,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84399441] [2023-12-16 03:42:53,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84399441] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:42:53,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:42:53,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 03:42:53,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230261577] [2023-12-16 03:42:53,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:42:53,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 03:42:53,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:42:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 03:42:53,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:42:53,613 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:53,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:42:53,798 INFO L93 Difference]: Finished difference Result 637 states and 846 transitions. [2023-12-16 03:42:53,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:42:53,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-16 03:42:53,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:42:53,807 INFO L225 Difference]: With dead ends: 637 [2023-12-16 03:42:53,808 INFO L226 Difference]: Without dead ends: 501 [2023-12-16 03:42:53,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 03:42:53,808 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 351 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:42:53,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 398 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:42:53,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-16 03:42:53,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 144. [2023-12-16 03:42:53,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 115 states have (on average 1.3130434782608695) internal successors, (151), 115 states have internal predecessors, (151), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 03:42:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 191 transitions. [2023-12-16 03:42:53,832 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 191 transitions. Word has length 142 [2023-12-16 03:42:53,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:42:53,837 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 191 transitions. [2023-12-16 03:42:53,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:53,837 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 191 transitions. [2023-12-16 03:42:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 03:42:53,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:53,859 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:53,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 03:42:54,064 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 [2023-12-16 03:42:54,065 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:42:54,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:42:54,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1914233259, now seen corresponding path program 1 times [2023-12-16 03:42:54,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:42:54,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421033517] [2023-12-16 03:42:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:54,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:42:54,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:42:54,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422850930] [2023-12-16 03:42:54,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:54,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:42:54,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:54,103 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) [2023-12-16 03:42:54,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 03:42:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:54,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 03:42:54,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:42:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 433 proven. 57 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-16 03:42:55,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:42:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 03:42:58,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:42:58,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421033517] [2023-12-16 03:42:58,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:42:58,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422850930] [2023-12-16 03:42:58,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422850930] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 03:42:58,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 03:42:58,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-12-16 03:42:58,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963721898] [2023-12-16 03:42:58,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:42:58,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 03:42:58,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:42:58,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 03:42:58,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2023-12-16 03:42:58,134 INFO L87 Difference]: Start difference. First operand 144 states and 191 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:58,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:42:58,928 INFO L93 Difference]: Finished difference Result 395 states and 526 transitions. [2023-12-16 03:42:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 03:42:58,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-16 03:42:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:42:58,930 INFO L225 Difference]: With dead ends: 395 [2023-12-16 03:42:58,930 INFO L226 Difference]: Without dead ends: 252 [2023-12-16 03:42:58,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2023-12-16 03:42:58,931 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 293 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:42:58,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 417 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:42:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-16 03:42:58,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 158. [2023-12-16 03:42:58,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 129 states have (on average 1.3255813953488371) internal successors, (171), 129 states have internal predecessors, (171), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 03:42:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 211 transitions. [2023-12-16 03:42:58,942 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 211 transitions. Word has length 142 [2023-12-16 03:42:58,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:42:58,942 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 211 transitions. [2023-12-16 03:42:58,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:58,942 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 211 transitions. [2023-12-16 03:42:58,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 03:42:58,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:58,945 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:58,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 03:42:59,148 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 [2023-12-16 03:42:59,148 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:42:59,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:42:59,149 INFO L85 PathProgramCache]: Analyzing trace with hash 665833856, now seen corresponding path program 1 times [2023-12-16 03:42:59,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:42:59,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524966859] [2023-12-16 03:42:59,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:59,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:42:59,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:42:59,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088726983] [2023-12-16 03:42:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:59,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:42:59,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:59,165 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) [2023-12-16 03:42:59,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 03:42:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:59,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:42:59,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:42:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 03:42:59,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:42:59,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:42:59,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524966859] [2023-12-16 03:42:59,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:42:59,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088726983] [2023-12-16 03:42:59,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088726983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:42:59,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:42:59,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:42:59,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437990439] [2023-12-16 03:42:59,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:42:59,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:42:59,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:42:59,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:42:59,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:42:59,322 INFO L87 Difference]: Start difference. First operand 158 states and 211 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:59,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:42:59,387 INFO L93 Difference]: Finished difference Result 386 states and 509 transitions. [2023-12-16 03:42:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 03:42:59,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-16 03:42:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:42:59,388 INFO L225 Difference]: With dead ends: 386 [2023-12-16 03:42:59,389 INFO L226 Difference]: Without dead ends: 229 [2023-12-16 03:42:59,389 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 [2023-12-16 03:42:59,389 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 55 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:42:59,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 281 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:42:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-16 03:42:59,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 188. [2023-12-16 03:42:59,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 159 states have (on average 1.3144654088050314) internal successors, (209), 159 states have internal predecessors, (209), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 03:42:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 249 transitions. [2023-12-16 03:42:59,400 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 249 transitions. Word has length 142 [2023-12-16 03:42:59,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:42:59,401 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 249 transitions. [2023-12-16 03:42:59,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 249 transitions. [2023-12-16 03:42:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 03:42:59,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:59,402 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:59,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 03:42:59,607 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 [2023-12-16 03:42:59,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:42:59,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:42:59,609 INFO L85 PathProgramCache]: Analyzing trace with hash 182268693, now seen corresponding path program 1 times [2023-12-16 03:42:59,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:42:59,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231860201] [2023-12-16 03:42:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:59,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:42:59,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:42:59,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319591921] [2023-12-16 03:42:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:42:59,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:42:59,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:42:59,647 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) [2023-12-16 03:42:59,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 03:42:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:42:59,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:42:59,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:42:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 03:42:59,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:42:59,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:42:59,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231860201] [2023-12-16 03:42:59,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:42:59,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319591921] [2023-12-16 03:42:59,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319591921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:42:59,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:42:59,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 03:42:59,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493254454] [2023-12-16 03:42:59,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:42:59,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 03:42:59,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:42:59,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 03:42:59,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:42:59,802 INFO L87 Difference]: Start difference. First operand 188 states and 249 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:42:59,922 INFO L93 Difference]: Finished difference Result 507 states and 669 transitions. [2023-12-16 03:42:59,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:42:59,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-16 03:42:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:42:59,924 INFO L225 Difference]: With dead ends: 507 [2023-12-16 03:42:59,924 INFO L226 Difference]: Without dead ends: 316 [2023-12-16 03:42:59,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 03:42:59,925 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 66 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:42:59,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 447 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:42:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-12-16 03:42:59,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 202. [2023-12-16 03:42:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 173 states have (on average 1.300578034682081) internal successors, (225), 173 states have internal predecessors, (225), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 03:42:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 265 transitions. [2023-12-16 03:42:59,936 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 265 transitions. Word has length 142 [2023-12-16 03:42:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:42:59,937 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 265 transitions. [2023-12-16 03:42:59,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:42:59,937 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 265 transitions. [2023-12-16 03:42:59,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 03:42:59,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:42:59,938 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:42:59,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-16 03:43:00,143 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 [2023-12-16 03:43:00,143 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:43:00,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:43:00,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1925667413, now seen corresponding path program 1 times [2023-12-16 03:43:00,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:43:00,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872083570] [2023-12-16 03:43:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:43:00,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:43:00,166 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:43:00,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206821242] [2023-12-16 03:43:00,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:43:00,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:43:00,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:43:00,175 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) [2023-12-16 03:43:00,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 03:43:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:43:00,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 03:43:00,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:43:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 03:43:00,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:43:00,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:43:00,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872083570] [2023-12-16 03:43:00,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:43:00,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206821242] [2023-12-16 03:43:00,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206821242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:43:00,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:43:00,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:43:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207880369] [2023-12-16 03:43:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:43:00,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:43:00,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:43:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:43:00,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:43:00,499 INFO L87 Difference]: Start difference. First operand 202 states and 265 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:43:00,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:43:00,632 INFO L93 Difference]: Finished difference Result 577 states and 760 transitions. [2023-12-16 03:43:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:43:00,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-16 03:43:00,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:43:00,648 INFO L225 Difference]: With dead ends: 577 [2023-12-16 03:43:00,648 INFO L226 Difference]: Without dead ends: 376 [2023-12-16 03:43:00,649 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 [2023-12-16 03:43:00,650 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 71 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:43:00,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 309 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:43:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-12-16 03:43:00,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 278. [2023-12-16 03:43:00,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 221 states have (on average 1.262443438914027) internal successors, (279), 221 states have internal predecessors, (279), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 03:43:00,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 359 transitions. [2023-12-16 03:43:00,678 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 359 transitions. Word has length 142 [2023-12-16 03:43:00,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:43:00,678 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 359 transitions. [2023-12-16 03:43:00,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:43:00,679 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 359 transitions. [2023-12-16 03:43:00,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 03:43:00,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:43:00,680 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:43:00,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 03:43:00,885 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 [2023-12-16 03:43:00,885 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:43:00,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:43:00,886 INFO L85 PathProgramCache]: Analyzing trace with hash 279770532, now seen corresponding path program 1 times [2023-12-16 03:43:00,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:43:00,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10558121] [2023-12-16 03:43:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:43:00,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:43:00,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:43:00,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041638177] [2023-12-16 03:43:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:43:00,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:43:00,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:43:00,913 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) [2023-12-16 03:43:00,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 03:43:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:43:01,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:43:01,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:43:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 343 proven. 39 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-12-16 03:43:01,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:43:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-16 03:43:01,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:43:01,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10558121] [2023-12-16 03:43:01,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:43:01,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041638177] [2023-12-16 03:43:01,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041638177] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:43:01,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:43:01,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:43:01,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657503418] [2023-12-16 03:43:01,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:43:01,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:43:01,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:43:01,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:43:01,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:43:01,231 INFO L87 Difference]: Start difference. First operand 278 states and 359 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-16 03:43:01,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:43:01,393 INFO L93 Difference]: Finished difference Result 485 states and 616 transitions. [2023-12-16 03:43:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 03:43:01,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 142 [2023-12-16 03:43:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:43:01,416 INFO L225 Difference]: With dead ends: 485 [2023-12-16 03:43:01,416 INFO L226 Difference]: Without dead ends: 284 [2023-12-16 03:43:01,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:43:01,417 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 95 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:43:01,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 192 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:43:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-16 03:43:01,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 227. [2023-12-16 03:43:01,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 168 states have (on average 1.1964285714285714) internal successors, (201), 168 states have internal predecessors, (201), 40 states have call successors, (40), 18 states have call predecessors, (40), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 03:43:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 281 transitions. [2023-12-16 03:43:01,455 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 281 transitions. Word has length 142 [2023-12-16 03:43:01,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:43:01,456 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 281 transitions. [2023-12-16 03:43:01,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-16 03:43:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 281 transitions. [2023-12-16 03:43:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 03:43:01,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:43:01,458 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:43:01,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-16 03:43:01,663 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 [2023-12-16 03:43:01,663 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:43:01,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:43:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash -203794631, now seen corresponding path program 1 times [2023-12-16 03:43:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:43:01,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975608563] [2023-12-16 03:43:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:43:01,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:43:01,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:43:01,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547998493] [2023-12-16 03:43:01,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:43:01,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:43:01,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:43:01,700 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) [2023-12-16 03:43:01,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 03:43:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:43:01,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:43:01,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:43:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-16 03:43:01,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:43:01,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:43:01,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975608563] [2023-12-16 03:43:01,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:43:01,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547998493] [2023-12-16 03:43:01,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547998493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:43:01,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:43:01,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 03:43:01,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788584946] [2023-12-16 03:43:01,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:43:01,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 03:43:01,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:43:01,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 03:43:01,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:43:01,902 INFO L87 Difference]: Start difference. First operand 227 states and 281 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:43:01,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:43:01,953 INFO L93 Difference]: Finished difference Result 418 states and 522 transitions. [2023-12-16 03:43:01,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 03:43:01,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2023-12-16 03:43:01,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:43:01,955 INFO L225 Difference]: With dead ends: 418 [2023-12-16 03:43:01,955 INFO L226 Difference]: Without dead ends: 223 [2023-12-16 03:43:01,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 03:43:01,957 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 9 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:43:01,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 320 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:43:01,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-12-16 03:43:01,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2023-12-16 03:43:01,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 164 states have (on average 1.1768292682926829) internal successors, (193), 164 states have internal predecessors, (193), 40 states have call successors, (40), 18 states have call predecessors, (40), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 03:43:01,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 273 transitions. [2023-12-16 03:43:01,977 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 273 transitions. Word has length 142 [2023-12-16 03:43:01,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:43:01,977 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 273 transitions. [2023-12-16 03:43:01,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-16 03:43:01,977 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 273 transitions. [2023-12-16 03:43:01,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-16 03:43:01,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:43:01,978 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:43:01,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-16 03:43:02,183 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 [2023-12-16 03:43:02,183 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:43:02,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:43:02,184 INFO L85 PathProgramCache]: Analyzing trace with hash -769029986, now seen corresponding path program 1 times [2023-12-16 03:43:02,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:43:02,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178097498] [2023-12-16 03:43:02,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:43:02,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:43:02,195 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:43:02,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719714561] [2023-12-16 03:43:02,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:43:02,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:43:02,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:43:02,198 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) [2023-12-16 03:43:02,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 03:43:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:43:02,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 03:43:02,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 03:43:36,837 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:43:36,886 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 [2023-12-16 03:43:38,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-16 03:43:38,266 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 03:43:38,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown