/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-35.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:58:25,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:58:25,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:58:25,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:58:25,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:58:25,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:58:25,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:58:25,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:58:25,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:58:25,591 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:58:25,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:58:25,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:58:25,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:58:25,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:58:25,592 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:58:25,593 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:58:25,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:58:25,593 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:58:25,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:58:25,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:58:25,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:58:25,597 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:58:25,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:58:25,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:58:25,600 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:58:25,600 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:58:25,600 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:58:25,600 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:58:25,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:58:25,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:58:25,601 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:58:25,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:58:25,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:58:25,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:58:25,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:58:25,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:58:25,602 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:58:25,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:58:25,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:58:25,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:58:25,602 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:58:25,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:58:25,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:58:25,612 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:58:25,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:58:25,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:58:25,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:58:25,821 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:58:25,821 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:58:25,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-35.i [2023-12-15 19:58:26,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:58:26,981 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:58:26,982 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-35.i [2023-12-15 19:58:27,005 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10bdcfbf3/b002756bc1244e9980b8a3eff1fe9111/FLAG074e30529 [2023-12-15 19:58:27,016 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10bdcfbf3/b002756bc1244e9980b8a3eff1fe9111 [2023-12-15 19:58:27,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:58:27,019 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:58:27,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:58:27,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:58:27,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:58:27,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ffb002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27, skipping insertion in model container [2023-12-15 19:58:27,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:58:27,175 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-35.i[916,929] [2023-12-15 19:58:27,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:58:27,359 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:58:27,368 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-35.i[916,929] [2023-12-15 19:58:27,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:58:27,443 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:58:27,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27 WrapperNode [2023-12-15 19:58:27,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:58:27,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:58:27,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:58:27,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:58:27,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,466 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,525 INFO L138 Inliner]: procedures = 26, calls = 133, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 828 [2023-12-15 19:58:27,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:58:27,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:58:27,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:58:27,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:58:27,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,603 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]. [2023-12-15 19:58:27,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:58:27,655 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:58:27,655 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:58:27,655 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:58:27,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (1/1) ... [2023-12-15 19:58:27,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:58:27,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:27,721 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) [2023-12-15 19:58:27,743 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 [2023-12-15 19:58:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:58:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:58:27,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:58:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:58:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:58:27,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:58:27,893 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:58:27,896 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:58:28,706 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:58:28,757 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:58:28,758 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:58:28,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:58:28 BoogieIcfgContainer [2023-12-15 19:58:28,759 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:58:28,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:58:28,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:58:28,765 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:58:28,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:58:27" (1/3) ... [2023-12-15 19:58:28,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b51f648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:58:28, skipping insertion in model container [2023-12-15 19:58:28,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:58:27" (2/3) ... [2023-12-15 19:58:28,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b51f648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:58:28, skipping insertion in model container [2023-12-15 19:58:28,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:58:28" (3/3) ... [2023-12-15 19:58:28,767 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-35.i [2023-12-15 19:58:28,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:58:28,779 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:58:28,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:58:28,829 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;@37df9a24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:58:28,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:58:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 208 states have (on average 1.5961538461538463) internal successors, (332), 209 states have internal predecessors, (332), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-15 19:58:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-12-15 19:58:28,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:28,863 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:28,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:28,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:28,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1980837627, now seen corresponding path program 1 times [2023-12-15 19:58:28,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:28,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114088184] [2023-12-15 19:58:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:28,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:29,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:29,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114088184] [2023-12-15 19:58:29,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:58:29,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928134213] [2023-12-15 19:58:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:29,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:29,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:29,234 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) [2023-12-15 19:58:29,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:58:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:29,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:58:29,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 28322 trivial. 0 not checked. [2023-12-15 19:58:29,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:29,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928134213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:29,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:29,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:58:29,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582539240] [2023-12-15 19:58:29,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:29,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:58:29,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:58:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:58:29,767 INFO L87 Difference]: Start difference. First operand has 331 states, 208 states have (on average 1.5961538461538463) internal successors, (332), 209 states have internal predecessors, (332), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-15 19:58:29,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:29,850 INFO L93 Difference]: Finished difference Result 659 states and 1262 transitions. [2023-12-15 19:58:29,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:58:29,852 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 2 states have call successors, (120) Word has length 748 [2023-12-15 19:58:29,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:29,861 INFO L225 Difference]: With dead ends: 659 [2023-12-15 19:58:29,861 INFO L226 Difference]: Without dead ends: 329 [2023-12-15 19:58:29,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:58:29,868 INFO L413 NwaCegarLoop]: 564 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, 564 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 [2023-12-15 19:58:29,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 564 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:29,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-15 19:58:29,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2023-12-15 19:58:29,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 207 states have (on average 1.5797101449275361) internal successors, (327), 207 states have internal predecessors, (327), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-15 19:58:29,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 567 transitions. [2023-12-15 19:58:29,957 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 567 transitions. Word has length 748 [2023-12-15 19:58:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:29,959 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 567 transitions. [2023-12-15 19:58:29,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (120), 2 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 2 states have call successors, (120) [2023-12-15 19:58:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 567 transitions. [2023-12-15 19:58:29,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-12-15 19:58:29,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:29,974 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:29,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:30,180 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 [2023-12-15 19:58:30,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:30,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1983620877, now seen corresponding path program 1 times [2023-12-15 19:58:30,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:30,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957047617] [2023-12-15 19:58:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:30,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:30,356 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:30,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24855827] [2023-12-15 19:58:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:30,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:30,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:30,358 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) [2023-12-15 19:58:30,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:58:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:30,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:30,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-15 19:58:30,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:30,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:30,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957047617] [2023-12-15 19:58:30,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:30,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24855827] [2023-12-15 19:58:30,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24855827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:30,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:30,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:30,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52176742] [2023-12-15 19:58:30,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:30,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:30,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:30,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:30,812 INFO L87 Difference]: Start difference. First operand 329 states and 567 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:30,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:30,876 INFO L93 Difference]: Finished difference Result 657 states and 1133 transitions. [2023-12-15 19:58:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:30,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 748 [2023-12-15 19:58:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:30,883 INFO L225 Difference]: With dead ends: 657 [2023-12-15 19:58:30,883 INFO L226 Difference]: Without dead ends: 329 [2023-12-15 19:58:30,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:30,886 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 18 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:30,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1104 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-15 19:58:30,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2023-12-15 19:58:30,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 207 states have (on average 1.5748792270531402) internal successors, (326), 207 states have internal predecessors, (326), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-15 19:58:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 566 transitions. [2023-12-15 19:58:30,931 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 566 transitions. Word has length 748 [2023-12-15 19:58:30,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:30,934 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 566 transitions. [2023-12-15 19:58:30,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:30,935 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 566 transitions. [2023-12-15 19:58:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-15 19:58:30,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:30,944 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:30,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:31,155 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 [2023-12-15 19:58:31,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:31,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1797098345, now seen corresponding path program 1 times [2023-12-15 19:58:31,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:31,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464240479] [2023-12-15 19:58:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:31,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:31,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:31,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857631290] [2023-12-15 19:58:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:31,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:31,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:31,259 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) [2023-12-15 19:58:31,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:58:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:31,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:31,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-15 19:58:31,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:31,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:31,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464240479] [2023-12-15 19:58:31,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:31,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857631290] [2023-12-15 19:58:31,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857631290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:31,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:31,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:31,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147293934] [2023-12-15 19:58:31,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:31,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:31,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:31,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:31,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:31,691 INFO L87 Difference]: Start difference. First operand 329 states and 566 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:31,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:31,749 INFO L93 Difference]: Finished difference Result 823 states and 1428 transitions. [2023-12-15 19:58:31,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:31,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 749 [2023-12-15 19:58:31,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:31,757 INFO L225 Difference]: With dead ends: 823 [2023-12-15 19:58:31,757 INFO L226 Difference]: Without dead ends: 495 [2023-12-15 19:58:31,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:31,759 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 286 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:31,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1105 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-12-15 19:58:31,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 492. [2023-12-15 19:58:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 349 states have (on average 1.6504297994269341) internal successors, (576), 350 states have internal predecessors, (576), 140 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (140), 139 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-15 19:58:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 856 transitions. [2023-12-15 19:58:31,790 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 856 transitions. Word has length 749 [2023-12-15 19:58:31,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:31,793 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 856 transitions. [2023-12-15 19:58:31,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:31,793 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 856 transitions. [2023-12-15 19:58:31,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-15 19:58:31,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:31,799 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:31,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:32,009 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 [2023-12-15 19:58:32,010 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:32,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:32,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1873999143, now seen corresponding path program 1 times [2023-12-15 19:58:32,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:32,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575884574] [2023-12-15 19:58:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:32,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:32,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:32,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180026821] [2023-12-15 19:58:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:32,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:32,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:32,073 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) [2023-12-15 19:58:32,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:58:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:32,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:32,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-15 19:58:32,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575884574] [2023-12-15 19:58:32,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180026821] [2023-12-15 19:58:32,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180026821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:32,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:32,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:32,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496585710] [2023-12-15 19:58:32,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:32,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:32,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:32,445 INFO L87 Difference]: Start difference. First operand 492 states and 856 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:32,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:32,496 INFO L93 Difference]: Finished difference Result 1318 states and 2298 transitions. [2023-12-15 19:58:32,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:32,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 749 [2023-12-15 19:58:32,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:32,501 INFO L225 Difference]: With dead ends: 1318 [2023-12-15 19:58:32,501 INFO L226 Difference]: Without dead ends: 827 [2023-12-15 19:58:32,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:32,505 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 329 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:32,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1375 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:32,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-12-15 19:58:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 824. [2023-12-15 19:58:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 611 states have (on average 1.6693944353518821) internal successors, (1020), 614 states have internal predecessors, (1020), 208 states have call successors, (208), 4 states have call predecessors, (208), 4 states have return successors, (208), 205 states have call predecessors, (208), 208 states have call successors, (208) [2023-12-15 19:58:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1436 transitions. [2023-12-15 19:58:32,539 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1436 transitions. Word has length 749 [2023-12-15 19:58:32,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:32,540 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1436 transitions. [2023-12-15 19:58:32,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1436 transitions. [2023-12-15 19:58:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-15 19:58:32,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:32,546 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:32,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:32,753 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 [2023-12-15 19:58:32,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:32,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash -512510363, now seen corresponding path program 1 times [2023-12-15 19:58:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:32,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955560857] [2023-12-15 19:58:32,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:32,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:32,806 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:32,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566411246] [2023-12-15 19:58:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:32,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:32,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:32,811 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) [2023-12-15 19:58:32,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:58:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:33,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:33,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-15 19:58:33,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:33,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:33,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955560857] [2023-12-15 19:58:33,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:33,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566411246] [2023-12-15 19:58:33,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566411246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:33,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:33,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:33,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270492990] [2023-12-15 19:58:33,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:33,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:33,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:33,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:33,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:33,264 INFO L87 Difference]: Start difference. First operand 824 states and 1436 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:33,310 INFO L93 Difference]: Finished difference Result 1654 states and 2876 transitions. [2023-12-15 19:58:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:33,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 749 [2023-12-15 19:58:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:33,315 INFO L225 Difference]: With dead ends: 1654 [2023-12-15 19:58:33,315 INFO L226 Difference]: Without dead ends: 831 [2023-12-15 19:58:33,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:33,318 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 282 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:33,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 1143 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:33,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2023-12-15 19:58:33,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 664. [2023-12-15 19:58:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 520 states have (on average 1.725) internal successors, (897), 521 states have internal predecessors, (897), 140 states have call successors, (140), 3 states have call predecessors, (140), 3 states have return successors, (140), 139 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-15 19:58:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1177 transitions. [2023-12-15 19:58:33,346 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1177 transitions. Word has length 749 [2023-12-15 19:58:33,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:33,347 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 1177 transitions. [2023-12-15 19:58:33,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1177 transitions. [2023-12-15 19:58:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-15 19:58:33,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:33,353 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:33,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:33,562 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 [2023-12-15 19:58:33,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:33,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:33,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1330158813, now seen corresponding path program 1 times [2023-12-15 19:58:33,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:33,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317819485] [2023-12-15 19:58:33,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:33,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:33,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:33,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831871295] [2023-12-15 19:58:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:33,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:33,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:33,611 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) [2023-12-15 19:58:33,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:58:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:33,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:33,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-15 19:58:33,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:33,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:33,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317819485] [2023-12-15 19:58:33,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:33,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831871295] [2023-12-15 19:58:33,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831871295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:33,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:33,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:33,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762750154] [2023-12-15 19:58:33,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:33,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:33,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:33,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:33,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:33,978 INFO L87 Difference]: Start difference. First operand 664 states and 1177 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:34,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:34,025 INFO L93 Difference]: Finished difference Result 1797 states and 3181 transitions. [2023-12-15 19:58:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:34,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 749 [2023-12-15 19:58:34,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:34,030 INFO L225 Difference]: With dead ends: 1797 [2023-12-15 19:58:34,030 INFO L226 Difference]: Without dead ends: 1134 [2023-12-15 19:58:34,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:34,032 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 376 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:34,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1113 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2023-12-15 19:58:34,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1131. [2023-12-15 19:58:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 876 states have (on average 1.7157534246575343) internal successors, (1503), 879 states have internal predecessors, (1503), 248 states have call successors, (248), 6 states have call predecessors, (248), 6 states have return successors, (248), 245 states have call predecessors, (248), 248 states have call successors, (248) [2023-12-15 19:58:34,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1999 transitions. [2023-12-15 19:58:34,094 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1999 transitions. Word has length 749 [2023-12-15 19:58:34,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:34,095 INFO L495 AbstractCegarLoop]: Abstraction has 1131 states and 1999 transitions. [2023-12-15 19:58:34,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:34,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1999 transitions. [2023-12-15 19:58:34,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-15 19:58:34,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:34,101 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:34,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:34,309 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 [2023-12-15 19:58:34,309 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:34,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:34,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1811239071, now seen corresponding path program 1 times [2023-12-15 19:58:34,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:34,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327142573] [2023-12-15 19:58:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:34,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:34,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:34,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260402462] [2023-12-15 19:58:34,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:34,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:34,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:34,364 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) [2023-12-15 19:58:34,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:58:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:34,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:58:34,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-15 19:58:34,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:34,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:34,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327142573] [2023-12-15 19:58:34,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:34,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260402462] [2023-12-15 19:58:34,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260402462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:34,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:34,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:58:34,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975800882] [2023-12-15 19:58:34,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:34,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:34,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:34,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:34,748 INFO L87 Difference]: Start difference. First operand 1131 states and 1999 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:34,821 INFO L93 Difference]: Finished difference Result 3074 states and 5402 transitions. [2023-12-15 19:58:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:34,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 749 [2023-12-15 19:58:34,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:34,830 INFO L225 Difference]: With dead ends: 3074 [2023-12-15 19:58:34,830 INFO L226 Difference]: Without dead ends: 1944 [2023-12-15 19:58:34,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:34,834 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 360 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:34,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1460 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:34,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2023-12-15 19:58:34,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1941. [2023-12-15 19:58:34,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1457 states have (on average 1.6774193548387097) internal successors, (2444), 1464 states have internal predecessors, (2444), 471 states have call successors, (471), 12 states have call predecessors, (471), 12 states have return successors, (471), 464 states have call predecessors, (471), 471 states have call successors, (471) [2023-12-15 19:58:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 3386 transitions. [2023-12-15 19:58:34,910 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 3386 transitions. Word has length 749 [2023-12-15 19:58:34,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:34,910 INFO L495 AbstractCegarLoop]: Abstraction has 1941 states and 3386 transitions. [2023-12-15 19:58:34,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:34,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 3386 transitions. [2023-12-15 19:58:34,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-15 19:58:34,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:34,917 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:34,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:35,125 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 [2023-12-15 19:58:35,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:35,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:35,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1826757789, now seen corresponding path program 1 times [2023-12-15 19:58:35,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:35,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259684563] [2023-12-15 19:58:35,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:35,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:35,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:35,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736747493] [2023-12-15 19:58:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:35,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:35,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:35,192 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) [2023-12-15 19:58:35,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:58:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:35,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:58:35,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-15 19:58:35,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:35,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259684563] [2023-12-15 19:58:35,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:35,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736747493] [2023-12-15 19:58:35,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736747493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:35,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:35,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:58:35,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441056799] [2023-12-15 19:58:35,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:35,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:58:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:35,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:58:35,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:58:35,632 INFO L87 Difference]: Start difference. First operand 1941 states and 3386 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:36,003 INFO L93 Difference]: Finished difference Result 5813 states and 10138 transitions. [2023-12-15 19:58:36,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:58:36,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 749 [2023-12-15 19:58:36,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:36,020 INFO L225 Difference]: With dead ends: 5813 [2023-12-15 19:58:36,020 INFO L226 Difference]: Without dead ends: 3873 [2023-12-15 19:58:36,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:58:36,027 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 1284 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:36,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 1931 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:58:36,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2023-12-15 19:58:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 1957. [2023-12-15 19:58:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1473 states have (on average 1.670061099796334) internal successors, (2460), 1480 states have internal predecessors, (2460), 471 states have call successors, (471), 12 states have call predecessors, (471), 12 states have return successors, (471), 464 states have call predecessors, (471), 471 states have call successors, (471) [2023-12-15 19:58:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3402 transitions. [2023-12-15 19:58:36,159 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3402 transitions. Word has length 749 [2023-12-15 19:58:36,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:36,159 INFO L495 AbstractCegarLoop]: Abstraction has 1957 states and 3402 transitions. [2023-12-15 19:58:36,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:36,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3402 transitions. [2023-12-15 19:58:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-12-15 19:58:36,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:36,166 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:36,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:36,374 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 [2023-12-15 19:58:36,375 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:36,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:36,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1404055963, now seen corresponding path program 1 times [2023-12-15 19:58:36,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:36,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487608500] [2023-12-15 19:58:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:36,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:36,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:36,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062263363] [2023-12-15 19:58:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:36,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:36,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:36,447 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) [2023-12-15 19:58:36,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:58:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:36,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:58:36,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-15 19:58:38,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:38,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:38,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487608500] [2023-12-15 19:58:38,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:38,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062263363] [2023-12-15 19:58:38,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062263363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:38,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:38,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:58:38,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452584990] [2023-12-15 19:58:38,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:38,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:58:38,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:38,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:58:38,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:38,444 INFO L87 Difference]: Start difference. First operand 1957 states and 3402 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:38,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:38,570 INFO L93 Difference]: Finished difference Result 5869 states and 10204 transitions. [2023-12-15 19:58:38,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:58:38,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 749 [2023-12-15 19:58:38,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:38,586 INFO L225 Difference]: With dead ends: 5869 [2023-12-15 19:58:38,586 INFO L226 Difference]: Without dead ends: 3913 [2023-12-15 19:58:38,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:58:38,592 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 208 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:38,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1207 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:58:38,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3913 states. [2023-12-15 19:58:38,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3913 to 3911. [2023-12-15 19:58:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3911 states, 2944 states have (on average 1.6596467391304348) internal successors, (4886), 2958 states have internal predecessors, (4886), 942 states have call successors, (942), 24 states have call predecessors, (942), 24 states have return successors, (942), 928 states have call predecessors, (942), 942 states have call successors, (942) [2023-12-15 19:58:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 6770 transitions. [2023-12-15 19:58:38,810 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 6770 transitions. Word has length 749 [2023-12-15 19:58:38,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:38,811 INFO L495 AbstractCegarLoop]: Abstraction has 3911 states and 6770 transitions. [2023-12-15 19:58:38,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:38,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 6770 transitions. [2023-12-15 19:58:38,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-15 19:58:38,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:38,819 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:38,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:39,027 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 [2023-12-15 19:58:39,027 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:39,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1772936544, now seen corresponding path program 1 times [2023-12-15 19:58:39,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:39,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222673169] [2023-12-15 19:58:39,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:39,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:39,072 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:39,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950442655] [2023-12-15 19:58:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:39,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:39,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:39,073 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) [2023-12-15 19:58:39,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:58:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:39,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:58:39,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 12047 proven. 105 refuted. 0 times theorem prover too weak. 16408 trivial. 0 not checked. [2023-12-15 19:58:39,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:58:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 252 proven. 105 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-15 19:58:39,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:39,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222673169] [2023-12-15 19:58:39,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:39,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950442655] [2023-12-15 19:58:39,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950442655] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:58:39,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:58:39,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:58:39,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894250831] [2023-12-15 19:58:39,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:58:39,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:58:39,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:39,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:58:39,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:58:39,939 INFO L87 Difference]: Start difference. First operand 3911 states and 6770 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (155), 2 states have call predecessors, (155), 4 states have return successors, (156), 2 states have call predecessors, (156), 2 states have call successors, (156) [2023-12-15 19:58:40,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:40,852 INFO L93 Difference]: Finished difference Result 8046 states and 13838 transitions. [2023-12-15 19:58:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:58:40,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (155), 2 states have call predecessors, (155), 4 states have return successors, (156), 2 states have call predecessors, (156), 2 states have call successors, (156) Word has length 750 [2023-12-15 19:58:40,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:40,872 INFO L225 Difference]: With dead ends: 8046 [2023-12-15 19:58:40,872 INFO L226 Difference]: Without dead ends: 4136 [2023-12-15 19:58:40,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1502 GetRequests, 1492 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:58:40,882 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 365 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:40,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1361 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:58:40,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2023-12-15 19:58:41,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 4081. [2023-12-15 19:58:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4081 states, 3020 states have (on average 1.624503311258278) internal successors, (4906), 3035 states have internal predecessors, (4906), 1026 states have call successors, (1026), 34 states have call predecessors, (1026), 34 states have return successors, (1026), 1011 states have call predecessors, (1026), 1026 states have call successors, (1026) [2023-12-15 19:58:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 6958 transitions. [2023-12-15 19:58:41,112 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 6958 transitions. Word has length 750 [2023-12-15 19:58:41,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:41,112 INFO L495 AbstractCegarLoop]: Abstraction has 4081 states and 6958 transitions. [2023-12-15 19:58:41,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (155), 2 states have call predecessors, (155), 4 states have return successors, (156), 2 states have call predecessors, (156), 2 states have call successors, (156) [2023-12-15 19:58:41,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 6958 transitions. [2023-12-15 19:58:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-15 19:58:41,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:41,121 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:41,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:41,328 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 [2023-12-15 19:58:41,329 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:41,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:41,329 INFO L85 PathProgramCache]: Analyzing trace with hash 543119448, now seen corresponding path program 1 times [2023-12-15 19:58:41,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:41,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637541240] [2023-12-15 19:58:41,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:41,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:41,377 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:41,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012732682] [2023-12-15 19:58:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:41,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:41,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:41,378 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) [2023-12-15 19:58:41,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:58:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:41,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:58:41,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 9429 proven. 72 refuted. 0 times theorem prover too weak. 19059 trivial. 0 not checked. [2023-12-15 19:58:41,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:58:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 285 proven. 72 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-15 19:58:42,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:42,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637541240] [2023-12-15 19:58:42,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:42,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012732682] [2023-12-15 19:58:42,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012732682] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:58:42,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:58:42,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:58:42,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042243276] [2023-12-15 19:58:42,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:58:42,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:58:42,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:42,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:58:42,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:58:42,273 INFO L87 Difference]: Start difference. First operand 4081 states and 6958 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (144), 2 states have call predecessors, (144), 4 states have return successors, (145), 2 states have call predecessors, (145), 2 states have call successors, (145) [2023-12-15 19:58:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:43,160 INFO L93 Difference]: Finished difference Result 6450 states and 10985 transitions. [2023-12-15 19:58:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:58:43,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (144), 2 states have call predecessors, (144), 4 states have return successors, (145), 2 states have call predecessors, (145), 2 states have call successors, (145) Word has length 750 [2023-12-15 19:58:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:43,172 INFO L225 Difference]: With dead ends: 6450 [2023-12-15 19:58:43,172 INFO L226 Difference]: Without dead ends: 2508 [2023-12-15 19:58:43,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1502 GetRequests, 1492 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:58:43,182 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 367 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:43,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 1455 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:58:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2023-12-15 19:58:43,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2471. [2023-12-15 19:58:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 1855 states have (on average 1.6242587601078167) internal successors, (3013), 1862 states have internal predecessors, (3013), 591 states have call successors, (591), 24 states have call predecessors, (591), 24 states have return successors, (591), 584 states have call predecessors, (591), 591 states have call successors, (591) [2023-12-15 19:58:43,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 4195 transitions. [2023-12-15 19:58:43,342 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 4195 transitions. Word has length 750 [2023-12-15 19:58:43,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:43,343 INFO L495 AbstractCegarLoop]: Abstraction has 2471 states and 4195 transitions. [2023-12-15 19:58:43,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (144), 2 states have call predecessors, (144), 4 states have return successors, (145), 2 states have call predecessors, (145), 2 states have call successors, (145) [2023-12-15 19:58:43,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 4195 transitions. [2023-12-15 19:58:43,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-12-15 19:58:43,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:43,350 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:43,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:43,560 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 [2023-12-15 19:58:43,560 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:43,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:43,561 INFO L85 PathProgramCache]: Analyzing trace with hash -84810668, now seen corresponding path program 1 times [2023-12-15 19:58:43,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:43,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145511488] [2023-12-15 19:58:43,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:43,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:43,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:43,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429867771] [2023-12-15 19:58:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:43,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:43,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:43,624 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) [2023-12-15 19:58:43,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 19:58:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:43,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:58:44,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:44,383 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 10859 proven. 267 refuted. 0 times theorem prover too weak. 17434 trivial. 0 not checked. [2023-12-15 19:58:44,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:58:44,726 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 90 proven. 267 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-15 19:58:44,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:44,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145511488] [2023-12-15 19:58:44,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:44,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429867771] [2023-12-15 19:58:44,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429867771] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:58:44,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:58:44,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 19:58:44,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015982471] [2023-12-15 19:58:44,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:58:44,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:58:44,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:44,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:58:44,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:58:44,728 INFO L87 Difference]: Start difference. First operand 2471 states and 4195 transitions. Second operand has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 3 states have call successors, (209), 2 states have call predecessors, (209), 4 states have return successors, (210), 3 states have call predecessors, (210), 3 states have call successors, (210) [2023-12-15 19:58:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:45,405 INFO L93 Difference]: Finished difference Result 4837 states and 8193 transitions. [2023-12-15 19:58:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:58:45,406 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 3 states have call successors, (209), 2 states have call predecessors, (209), 4 states have return successors, (210), 3 states have call predecessors, (210), 3 states have call successors, (210) Word has length 750 [2023-12-15 19:58:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:45,414 INFO L225 Difference]: With dead ends: 4837 [2023-12-15 19:58:45,414 INFO L226 Difference]: Without dead ends: 2531 [2023-12-15 19:58:45,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1503 GetRequests, 1490 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-15 19:58:45,419 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 563 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:45,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1804 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:58:45,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2023-12-15 19:58:45,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2495. [2023-12-15 19:58:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2495 states, 1874 states have (on average 1.6179295624332977) internal successors, (3032), 1881 states have internal predecessors, (3032), 591 states have call successors, (591), 29 states have call predecessors, (591), 29 states have return successors, (591), 584 states have call predecessors, (591), 591 states have call successors, (591) [2023-12-15 19:58:45,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 4214 transitions. [2023-12-15 19:58:45,530 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 4214 transitions. Word has length 750 [2023-12-15 19:58:45,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:45,530 INFO L495 AbstractCegarLoop]: Abstraction has 2495 states and 4214 transitions. [2023-12-15 19:58:45,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 3 states have call successors, (209), 2 states have call predecessors, (209), 4 states have return successors, (210), 3 states have call predecessors, (210), 3 states have call successors, (210) [2023-12-15 19:58:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 4214 transitions. [2023-12-15 19:58:45,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-15 19:58:45,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:45,537 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:45,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:45,745 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 [2023-12-15 19:58:45,746 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:45,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:45,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2005142590, now seen corresponding path program 1 times [2023-12-15 19:58:45,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:45,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631812415] [2023-12-15 19:58:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:45,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:45,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:45,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343554773] [2023-12-15 19:58:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:45,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:45,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:45,826 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) [2023-12-15 19:58:45,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 19:58:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:46,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 1662 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:58:46,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 11319 proven. 261 refuted. 0 times theorem prover too weak. 16980 trivial. 0 not checked. [2023-12-15 19:58:46,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:58:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 96 proven. 261 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-15 19:58:47,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:47,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631812415] [2023-12-15 19:58:47,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:47,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343554773] [2023-12-15 19:58:47,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343554773] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:58:47,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:58:47,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 19:58:47,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112127519] [2023-12-15 19:58:47,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:58:47,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:58:47,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:47,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:58:47,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:58:47,101 INFO L87 Difference]: Start difference. First operand 2495 states and 4214 transitions. Second operand has 10 states, 10 states have (on average 21.7) internal successors, (217), 10 states have internal predecessors, (217), 3 states have call successors, (207), 2 states have call predecessors, (207), 4 states have return successors, (208), 3 states have call predecessors, (208), 3 states have call successors, (208) [2023-12-15 19:58:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:47,834 INFO L93 Difference]: Finished difference Result 4877 states and 8220 transitions. [2023-12-15 19:58:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:58:47,835 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.7) internal successors, (217), 10 states have internal predecessors, (217), 3 states have call successors, (207), 2 states have call predecessors, (207), 4 states have return successors, (208), 3 states have call predecessors, (208), 3 states have call successors, (208) Word has length 751 [2023-12-15 19:58:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:47,850 INFO L225 Difference]: With dead ends: 4877 [2023-12-15 19:58:47,851 INFO L226 Difference]: Without dead ends: 2551 [2023-12-15 19:58:47,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1505 GetRequests, 1492 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-12-15 19:58:47,857 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 557 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:47,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 1787 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:58:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2023-12-15 19:58:47,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 2511. [2023-12-15 19:58:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 1885 states have (on average 1.610079575596817) internal successors, (3035), 1892 states have internal predecessors, (3035), 591 states have call successors, (591), 34 states have call predecessors, (591), 34 states have return successors, (591), 584 states have call predecessors, (591), 591 states have call successors, (591) [2023-12-15 19:58:47,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 4217 transitions. [2023-12-15 19:58:47,983 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 4217 transitions. Word has length 751 [2023-12-15 19:58:47,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:47,984 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 4217 transitions. [2023-12-15 19:58:47,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.7) internal successors, (217), 10 states have internal predecessors, (217), 3 states have call successors, (207), 2 states have call predecessors, (207), 4 states have return successors, (208), 3 states have call predecessors, (208), 3 states have call successors, (208) [2023-12-15 19:58:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 4217 transitions. [2023-12-15 19:58:47,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-15 19:58:47,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:47,991 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:48,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:48,202 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 [2023-12-15 19:58:48,202 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:48,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:48,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1978076988, now seen corresponding path program 1 times [2023-12-15 19:58:48,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:48,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505561043] [2023-12-15 19:58:48,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:48,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:48,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:48,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807664920] [2023-12-15 19:58:48,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:48,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:48,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:48,293 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) [2023-12-15 19:58:48,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 19:58:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:48,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:58:48,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 12759 proven. 117 refuted. 0 times theorem prover too weak. 15684 trivial. 0 not checked. [2023-12-15 19:58:49,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:58:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 240 proven. 117 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-15 19:58:49,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:49,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505561043] [2023-12-15 19:58:49,383 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:49,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807664920] [2023-12-15 19:58:49,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807664920] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:58:49,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:58:49,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 19:58:49,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102039220] [2023-12-15 19:58:49,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:58:49,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:58:49,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:49,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:58:49,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:58:49,391 INFO L87 Difference]: Start difference. First operand 2511 states and 4217 transitions. Second operand has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 3 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (160), 3 states have call predecessors, (160), 3 states have call successors, (160) [2023-12-15 19:58:49,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:49,873 INFO L93 Difference]: Finished difference Result 4905 states and 8223 transitions. [2023-12-15 19:58:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:58:49,874 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 3 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (160), 3 states have call predecessors, (160), 3 states have call successors, (160) Word has length 751 [2023-12-15 19:58:49,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:49,881 INFO L225 Difference]: With dead ends: 4905 [2023-12-15 19:58:49,881 INFO L226 Difference]: Without dead ends: 2567 [2023-12-15 19:58:49,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1504 GetRequests, 1494 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 19:58:49,885 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 320 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:49,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1043 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:58:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2023-12-15 19:58:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2531. [2023-12-15 19:58:50,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 1900 states have (on average 1.5968421052631578) internal successors, (3034), 1907 states have internal predecessors, (3034), 591 states have call successors, (591), 39 states have call predecessors, (591), 39 states have return successors, (591), 584 states have call predecessors, (591), 591 states have call successors, (591) [2023-12-15 19:58:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 4216 transitions. [2023-12-15 19:58:50,010 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 4216 transitions. Word has length 751 [2023-12-15 19:58:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:50,010 INFO L495 AbstractCegarLoop]: Abstraction has 2531 states and 4216 transitions. [2023-12-15 19:58:50,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 3 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (160), 3 states have call predecessors, (160), 3 states have call successors, (160) [2023-12-15 19:58:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 4216 transitions. [2023-12-15 19:58:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-15 19:58:50,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:50,017 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:50,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:50,224 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 [2023-12-15 19:58:50,225 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:50,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1311768768, now seen corresponding path program 1 times [2023-12-15 19:58:50,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:50,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119896737] [2023-12-15 19:58:50,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:50,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:50,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:50,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967941283] [2023-12-15 19:58:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:50,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:50,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:50,276 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) [2023-12-15 19:58:50,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 19:58:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:50,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:58:50,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 10493 proven. 84 refuted. 0 times theorem prover too weak. 17983 trivial. 0 not checked. [2023-12-15 19:58:50,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:58:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 273 proven. 84 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-15 19:58:51,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119896737] [2023-12-15 19:58:51,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967941283] [2023-12-15 19:58:51,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967941283] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:58:51,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:58:51,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 19:58:51,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609876518] [2023-12-15 19:58:51,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:58:51,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:58:51,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:51,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:58:51,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:58:51,233 INFO L87 Difference]: Start difference. First operand 2531 states and 4216 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (149), 2 states have call predecessors, (149), 2 states have call successors, (149) [2023-12-15 19:58:51,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:51,724 INFO L93 Difference]: Finished difference Result 4939 states and 8218 transitions. [2023-12-15 19:58:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 19:58:51,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (149), 2 states have call predecessors, (149), 2 states have call successors, (149) Word has length 752 [2023-12-15 19:58:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:51,731 INFO L225 Difference]: With dead ends: 4939 [2023-12-15 19:58:51,731 INFO L226 Difference]: Without dead ends: 2585 [2023-12-15 19:58:51,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1506 GetRequests, 1496 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:58:51,735 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 334 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:51,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1039 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:58:51,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2023-12-15 19:58:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2543. [2023-12-15 19:58:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 1909 states have (on average 1.5856469355683604) internal successors, (3027), 1916 states have internal predecessors, (3027), 591 states have call successors, (591), 42 states have call predecessors, (591), 42 states have return successors, (591), 584 states have call predecessors, (591), 591 states have call successors, (591) [2023-12-15 19:58:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4209 transitions. [2023-12-15 19:58:51,861 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4209 transitions. Word has length 752 [2023-12-15 19:58:51,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:51,862 INFO L495 AbstractCegarLoop]: Abstraction has 2543 states and 4209 transitions. [2023-12-15 19:58:51,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (148), 2 states have call predecessors, (148), 4 states have return successors, (149), 2 states have call predecessors, (149), 2 states have call successors, (149) [2023-12-15 19:58:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4209 transitions. [2023-12-15 19:58:51,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-15 19:58:51,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:51,868 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:51,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:52,076 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 [2023-12-15 19:58:52,077 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:52,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:52,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1821241858, now seen corresponding path program 1 times [2023-12-15 19:58:52,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:52,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742864042] [2023-12-15 19:58:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:52,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:52,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:52,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954077455] [2023-12-15 19:58:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:52,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:52,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:52,150 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) [2023-12-15 19:58:52,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 19:58:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:52,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 19:58:52,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 11300 proven. 525 refuted. 0 times theorem prover too weak. 16735 trivial. 0 not checked. [2023-12-15 19:58:53,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:58:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 183 proven. 528 refuted. 0 times theorem prover too weak. 27849 trivial. 0 not checked. [2023-12-15 19:58:54,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:54,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742864042] [2023-12-15 19:58:54,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:54,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954077455] [2023-12-15 19:58:54,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954077455] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:58:54,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:58:54,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-15 19:58:54,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073153594] [2023-12-15 19:58:54,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:58:54,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 19:58:54,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:54,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 19:58:54,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:58:54,520 INFO L87 Difference]: Start difference. First operand 2543 states and 4209 transitions. Second operand has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 5 states have call successors, (209), 3 states have call predecessors, (209), 7 states have return successors, (210), 5 states have call predecessors, (210), 5 states have call successors, (210) [2023-12-15 19:58:55,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:55,473 INFO L93 Difference]: Finished difference Result 4967 states and 8207 transitions. [2023-12-15 19:58:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 19:58:55,474 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 5 states have call successors, (209), 3 states have call predecessors, (209), 7 states have return successors, (210), 5 states have call predecessors, (210), 5 states have call successors, (210) Word has length 752 [2023-12-15 19:58:55,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:55,481 INFO L225 Difference]: With dead ends: 4967 [2023-12-15 19:58:55,481 INFO L226 Difference]: Without dead ends: 2605 [2023-12-15 19:58:55,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1510 GetRequests, 1488 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2023-12-15 19:58:55,486 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 551 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:55,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1935 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:58:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2023-12-15 19:58:55,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2559. [2023-12-15 19:58:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 1920 states have (on average 1.5802083333333334) internal successors, (3034), 1927 states have internal predecessors, (3034), 591 states have call successors, (591), 47 states have call predecessors, (591), 47 states have return successors, (591), 584 states have call predecessors, (591), 591 states have call successors, (591) [2023-12-15 19:58:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 4216 transitions. [2023-12-15 19:58:55,617 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 4216 transitions. Word has length 752 [2023-12-15 19:58:55,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:55,618 INFO L495 AbstractCegarLoop]: Abstraction has 2559 states and 4216 transitions. [2023-12-15 19:58:55,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 5 states have call successors, (209), 3 states have call predecessors, (209), 7 states have return successors, (210), 5 states have call predecessors, (210), 5 states have call successors, (210) [2023-12-15 19:58:55,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 4216 transitions. [2023-12-15 19:58:55,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-12-15 19:58:55,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:55,625 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:55,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:55,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 19:58:55,833 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:55,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:55,833 INFO L85 PathProgramCache]: Analyzing trace with hash -294977151, now seen corresponding path program 1 times [2023-12-15 19:58:55,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:55,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412896192] [2023-12-15 19:58:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:55,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:55,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:55,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700628760] [2023-12-15 19:58:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:55,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:55,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:55,883 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:58:55,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 19:58:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:56,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 1663 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:58:56,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:56,358 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-15 19:58:56,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:56,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:56,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412896192] [2023-12-15 19:58:56,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:56,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700628760] [2023-12-15 19:58:56,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700628760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:56,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:56,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:58:56,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379155235] [2023-12-15 19:58:56,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:56,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:58:56,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:56,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:58:56,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:58:56,360 INFO L87 Difference]: Start difference. First operand 2559 states and 4216 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:56,881 INFO L93 Difference]: Finished difference Result 7549 states and 12459 transitions. [2023-12-15 19:58:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:58:56,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 753 [2023-12-15 19:58:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:56,894 INFO L225 Difference]: With dead ends: 7549 [2023-12-15 19:58:56,894 INFO L226 Difference]: Without dead ends: 5175 [2023-12-15 19:58:56,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:58:56,901 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 620 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:56,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 1900 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:58:56,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5175 states. [2023-12-15 19:58:57,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5175 to 3327. [2023-12-15 19:58:57,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 2382 states have (on average 1.5163727959697733) internal successors, (3612), 2401 states have internal predecessors, (3612), 871 states have call successors, (871), 73 states have call predecessors, (871), 73 states have return successors, (871), 852 states have call predecessors, (871), 871 states have call successors, (871) [2023-12-15 19:58:57,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5354 transitions. [2023-12-15 19:58:57,117 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5354 transitions. Word has length 753 [2023-12-15 19:58:57,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:57,118 INFO L495 AbstractCegarLoop]: Abstraction has 3327 states and 5354 transitions. [2023-12-15 19:58:57,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:57,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5354 transitions. [2023-12-15 19:58:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-12-15 19:58:57,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:57,125 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:57,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 19:58:57,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 19:58:57,333 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:57,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash 406087427, now seen corresponding path program 1 times [2023-12-15 19:58:57,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:57,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142771392] [2023-12-15 19:58:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:57,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:57,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:57,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784479295] [2023-12-15 19:58:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:57,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:57,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:57,399 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:58:57,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 19:58:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:58:57,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 1663 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 19:58:57,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:58:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-15 19:58:57,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:58:57,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:58:57,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142771392] [2023-12-15 19:58:57,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:58:57,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784479295] [2023-12-15 19:58:57,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784479295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:58:57,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:58:57,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:58:57,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406545098] [2023-12-15 19:58:57,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:58:57,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:58:57,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:58:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:58:57,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:58:57,956 INFO L87 Difference]: Start difference. First operand 3327 states and 5354 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:58,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:58:58,874 INFO L93 Difference]: Finished difference Result 12697 states and 20469 transitions. [2023-12-15 19:58:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 19:58:58,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 753 [2023-12-15 19:58:58,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:58:58,894 INFO L225 Difference]: With dead ends: 12697 [2023-12-15 19:58:58,894 INFO L226 Difference]: Without dead ends: 9011 [2023-12-15 19:58:58,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:58:58,902 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 1579 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:58:58,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 2000 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:58:58,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9011 states. [2023-12-15 19:58:59,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9011 to 6469. [2023-12-15 19:58:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6469 states, 4700 states have (on average 1.5112765957446808) internal successors, (7103), 4740 states have internal predecessors, (7103), 1629 states have call successors, (1629), 139 states have call predecessors, (1629), 139 states have return successors, (1629), 1589 states have call predecessors, (1629), 1629 states have call successors, (1629) [2023-12-15 19:58:59,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6469 states to 6469 states and 10361 transitions. [2023-12-15 19:58:59,420 INFO L78 Accepts]: Start accepts. Automaton has 6469 states and 10361 transitions. Word has length 753 [2023-12-15 19:58:59,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:58:59,420 INFO L495 AbstractCegarLoop]: Abstraction has 6469 states and 10361 transitions. [2023-12-15 19:58:59,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:58:59,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6469 states and 10361 transitions. [2023-12-15 19:58:59,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-12-15 19:58:59,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:58:59,428 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:58:59,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-15 19:58:59,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 19:58:59,636 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:58:59,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:58:59,636 INFO L85 PathProgramCache]: Analyzing trace with hash 849988101, now seen corresponding path program 1 times [2023-12-15 19:58:59,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:58:59,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976966748] [2023-12-15 19:58:59,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:59,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:58:59,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:58:59,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851853885] [2023-12-15 19:58:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:58:59,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:58:59,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:58:59,685 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:58:59,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-15 19:59:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:00,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 1662 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 19:59:00,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-15 19:59:00,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:59:00,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:00,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976966748] [2023-12-15 19:59:00,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:00,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851853885] [2023-12-15 19:59:00,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851853885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:59:00,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:59:00,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:59:00,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225172045] [2023-12-15 19:59:00,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:59:00,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:59:00,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:00,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:59:00,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:59:00,801 INFO L87 Difference]: Start difference. First operand 6469 states and 10361 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:59:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:02,075 INFO L93 Difference]: Finished difference Result 14982 states and 24011 transitions. [2023-12-15 19:59:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:59:02,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 753 [2023-12-15 19:59:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:02,095 INFO L225 Difference]: With dead ends: 14982 [2023-12-15 19:59:02,095 INFO L226 Difference]: Without dead ends: 8702 [2023-12-15 19:59:02,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:59:02,105 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1347 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:02,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 2148 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:59:02,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8702 states. [2023-12-15 19:59:02,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8702 to 8355. [2023-12-15 19:59:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8355 states, 6149 states have (on average 1.521385591153033) internal successors, (9355), 6200 states have internal predecessors, (9355), 2029 states have call successors, (2029), 176 states have call predecessors, (2029), 176 states have return successors, (2029), 1978 states have call predecessors, (2029), 2029 states have call successors, (2029) [2023-12-15 19:59:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 13413 transitions. [2023-12-15 19:59:02,737 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 13413 transitions. Word has length 753 [2023-12-15 19:59:02,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:02,738 INFO L495 AbstractCegarLoop]: Abstraction has 8355 states and 13413 transitions. [2023-12-15 19:59:02,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:59:02,738 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 13413 transitions. [2023-12-15 19:59:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-12-15 19:59:02,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:02,746 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:02,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-15 19:59:02,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:02,954 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:02,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:02,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1144156605, now seen corresponding path program 1 times [2023-12-15 19:59:02,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:02,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909705673] [2023-12-15 19:59:02,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:02,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:03,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:59:03,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910851031] [2023-12-15 19:59:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:03,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:03,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:03,002 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:59:03,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-15 19:59:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:03,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 1663 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 19:59:03,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:04,783 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 13749 proven. 216 refuted. 0 times theorem prover too weak. 14595 trivial. 0 not checked. [2023-12-15 19:59:04,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:59:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 141 proven. 216 refuted. 0 times theorem prover too weak. 28203 trivial. 0 not checked. [2023-12-15 19:59:05,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909705673] [2023-12-15 19:59:05,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910851031] [2023-12-15 19:59:05,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910851031] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:59:05,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:59:05,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2023-12-15 19:59:05,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815338083] [2023-12-15 19:59:05,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:59:05,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-15 19:59:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-15 19:59:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2023-12-15 19:59:05,618 INFO L87 Difference]: Start difference. First operand 8355 states and 13413 transitions. Second operand has 15 states, 15 states have (on average 17.0) internal successors, (255), 15 states have internal predecessors, (255), 4 states have call successors, (240), 3 states have call predecessors, (240), 5 states have return successors, (240), 4 states have call predecessors, (240), 4 states have call successors, (240) [2023-12-15 19:59:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:11,694 INFO L93 Difference]: Finished difference Result 53634 states and 85605 transitions. [2023-12-15 19:59:11,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-15 19:59:11,694 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.0) internal successors, (255), 15 states have internal predecessors, (255), 4 states have call successors, (240), 3 states have call predecessors, (240), 5 states have return successors, (240), 4 states have call predecessors, (240), 4 states have call successors, (240) Word has length 753 [2023-12-15 19:59:11,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:11,811 INFO L225 Difference]: With dead ends: 53634 [2023-12-15 19:59:11,812 INFO L226 Difference]: Without dead ends: 45468 [2023-12-15 19:59:11,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1520 GetRequests, 1494 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=441, Unknown=0, NotChecked=0, Total=756 [2023-12-15 19:59:11,837 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 3056 mSDsluCounter, 3932 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 949 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3251 SdHoareTripleChecker+Valid, 4351 SdHoareTripleChecker+Invalid, 4706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 949 IncrementalHoareTripleChecker+Valid, 3757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:11,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3251 Valid, 4351 Invalid, 4706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [949 Valid, 3757 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 19:59:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45468 states. [2023-12-15 19:59:14,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45468 to 36389. [2023-12-15 19:59:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36389 states, 27942 states have (on average 1.535108438909169) internal successors, (42894), 28231 states have internal predecessors, (42894), 7779 states have call successors, (7779), 667 states have call predecessors, (7779), 667 states have return successors, (7779), 7490 states have call predecessors, (7779), 7779 states have call successors, (7779) [2023-12-15 19:59:15,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36389 states to 36389 states and 58452 transitions. [2023-12-15 19:59:15,008 INFO L78 Accepts]: Start accepts. Automaton has 36389 states and 58452 transitions. Word has length 753 [2023-12-15 19:59:15,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:15,009 INFO L495 AbstractCegarLoop]: Abstraction has 36389 states and 58452 transitions. [2023-12-15 19:59:15,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.0) internal successors, (255), 15 states have internal predecessors, (255), 4 states have call successors, (240), 3 states have call predecessors, (240), 5 states have return successors, (240), 4 states have call predecessors, (240), 4 states have call successors, (240) [2023-12-15 19:59:15,009 INFO L276 IsEmpty]: Start isEmpty. Operand 36389 states and 58452 transitions. [2023-12-15 19:59:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-12-15 19:59:15,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:15,024 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:15,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-15 19:59:15,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:15,233 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:59:15,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:59:15,233 INFO L85 PathProgramCache]: Analyzing trace with hash -392210429, now seen corresponding path program 1 times [2023-12-15 19:59:15,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:59:15,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479518997] [2023-12-15 19:59:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:15,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:59:15,278 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:59:15,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825964583] [2023-12-15 19:59:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:59:15,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:15,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:59:15,279 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:59:15,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-15 19:59:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:59:15,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 19:59:15,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:59:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 28560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28560 trivial. 0 not checked. [2023-12-15 19:59:16,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:59:16,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:59:16,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479518997] [2023-12-15 19:59:16,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:59:16,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825964583] [2023-12-15 19:59:16,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825964583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:59:16,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:59:16,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:59:16,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709306951] [2023-12-15 19:59:16,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:59:16,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:59:16,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:59:16,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:59:16,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:59:16,496 INFO L87 Difference]: Start difference. First operand 36389 states and 58452 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:59:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:59:19,850 INFO L93 Difference]: Finished difference Result 72616 states and 116665 transitions. [2023-12-15 19:59:19,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:59:19,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) Word has length 753 [2023-12-15 19:59:19,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:59:19,935 INFO L225 Difference]: With dead ends: 72616 [2023-12-15 19:59:19,935 INFO L226 Difference]: Without dead ends: 36424 [2023-12-15 19:59:19,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:59:19,997 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1170 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:59:19,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 1683 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:59:20,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36424 states. [2023-12-15 19:59:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36424 to 36389. [2023-12-15 19:59:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36389 states, 27942 states have (on average 1.533963209505404) internal successors, (42862), 28231 states have internal predecessors, (42862), 7779 states have call successors, (7779), 667 states have call predecessors, (7779), 667 states have return successors, (7779), 7490 states have call predecessors, (7779), 7779 states have call successors, (7779) [2023-12-15 19:59:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36389 states to 36389 states and 58420 transitions. [2023-12-15 19:59:22,958 INFO L78 Accepts]: Start accepts. Automaton has 36389 states and 58420 transitions. Word has length 753 [2023-12-15 19:59:22,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:59:22,958 INFO L495 AbstractCegarLoop]: Abstraction has 36389 states and 58420 transitions. [2023-12-15 19:59:22,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 1 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 1 states have call predecessors, (120), 1 states have call successors, (120) [2023-12-15 19:59:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 36389 states and 58420 transitions. Received shutdown request... [2023-12-15 19:59:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2023-12-15 19:59:22,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:59:22,978 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:23,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-15 19:59:23,019 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:59:23,019 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 [2023-12-15 19:59:23,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:59:23,188 WARN L619 AbstractCegarLoop]: Verification canceled: while executing NwaCegarLoop. [2023-12-15 19:59:23,190 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:59:23,192 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:59:23,194 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:59:23,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:59:23 BoogieIcfgContainer [2023-12-15 19:59:23,195 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:59:23,195 INFO L158 Benchmark]: Toolchain (without parser) took 56176.54ms. Allocated memory was 319.8MB in the beginning and 2.6GB in the end (delta: 2.2GB). Free memory was 273.7MB in the beginning and 841.3MB in the end (delta: -567.5MB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-15 19:59:23,195 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 221.2MB. Free memory was 169.8MB in the beginning and 169.7MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:59:23,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.36ms. Allocated memory is still 319.8MB. Free memory was 273.7MB in the beginning and 240.9MB in the end (delta: 32.9MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-15 19:59:23,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.21ms. Allocated memory is still 319.8MB. Free memory was 240.9MB in the beginning and 227.2MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 19:59:23,196 INFO L158 Benchmark]: Boogie Preprocessor took 128.89ms. Allocated memory is still 319.8MB. Free memory was 227.2MB in the beginning and 274.1MB in the end (delta: -46.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-15 19:59:23,196 INFO L158 Benchmark]: RCFGBuilder took 1104.31ms. Allocated memory is still 319.8MB. Free memory was 274.1MB in the beginning and 178.7MB in the end (delta: 95.4MB). Peak memory consumption was 95.4MB. Max. memory is 8.0GB. [2023-12-15 19:59:23,196 INFO L158 Benchmark]: TraceAbstraction took 54432.57ms. Allocated memory was 319.8MB in the beginning and 2.6GB in the end (delta: 2.2GB). Free memory was 177.7MB in the beginning and 841.3MB in the end (delta: -663.6MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-15 19:59:23,197 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 221.2MB. Free memory was 169.8MB in the beginning and 169.7MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 425.36ms. Allocated memory is still 319.8MB. Free memory was 273.7MB in the beginning and 240.9MB in the end (delta: 32.9MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 79.21ms. Allocated memory is still 319.8MB. Free memory was 240.9MB in the beginning and 227.2MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 128.89ms. Allocated memory is still 319.8MB. Free memory was 227.2MB in the beginning and 274.1MB in the end (delta: -46.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * RCFGBuilder took 1104.31ms. Allocated memory is still 319.8MB. Free memory was 274.1MB in the beginning and 178.7MB in the end (delta: 95.4MB). Peak memory consumption was 95.4MB. Max. memory is 8.0GB. * TraceAbstraction took 54432.57ms. Allocated memory was 319.8MB in the beginning and 2.6GB in the end (delta: 2.2GB). Free memory was 177.7MB in the beginning and 841.3MB in the end (delta: -663.6MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while executing NwaCegarLoop. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 331 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.4s, OverallIterations: 21, TraceHistogramMax: 120, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14609 SdHoareTripleChecker+Valid, 8.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13972 mSDsluCounter, 33508 SdHoareTripleChecker+Invalid, 7.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21293 mSDsCounter, 3177 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11837 IncrementalHoareTripleChecker+Invalid, 15014 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3177 mSolverCounterUnsat, 12215 mSDtfsCounter, 11837 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21802 GetRequests, 21657 SyntacticMatches, 3 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36389occurred in iteration=20, InterpolantAutomatonStates: 143, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 16240 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.5s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 16508 NumberOfCodeBlocks, 16508 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 21740 ConstructedInterpolants, 0 QuantifiedInterpolants, 54848 SizeOfPredicates, 55 NumberOfNonLiveVariables, 34859 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 29 InterpolantComputations, 13 PerfectInterpolantSequences, 824943/828240 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown