/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-33.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 07:37:18,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 07:37:18,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 07:37:18,719 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 07:37:18,720 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 07:37:18,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 07:37:18,743 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 07:37:18,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 07:37:18,744 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 07:37:18,747 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 07:37:18,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 07:37:18,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 07:37:18,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 07:37:18,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 07:37:18,750 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 07:37:18,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 07:37:18,750 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 07:37:18,750 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 07:37:18,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 07:37:18,751 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 07:37:18,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 07:37:18,751 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 07:37:18,751 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 07:37:18,752 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 07:37:18,752 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 07:37:18,752 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 07:37:18,752 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 07:37:18,752 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 07:37:18,753 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 07:37:18,753 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 07:37:18,754 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 07:37:18,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 07:37:18,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:37:18,754 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 07:37:18,754 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 07:37:18,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 07:37:18,755 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 07:37:18,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 07:37:18,755 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 07:37:18,755 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 07:37:18,755 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 07:37:18,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 07:37:18,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 07:37:18,756 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 07:37:18,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 07:37:19,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 07:37:19,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 07:37:19,008 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 07:37:19,010 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 07:37:19,011 INFO L431 ainManager$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-33.i [2023-12-19 07:37:20,160 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 07:37:20,414 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 07:37:20,414 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-33.i [2023-12-19 07:37:20,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e5d4b48/cdee51776acb42ac82929774b7d2bb2b/FLAGb8c58c3e9 [2023-12-19 07:37:20,437 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44e5d4b48/cdee51776acb42ac82929774b7d2bb2b [2023-12-19 07:37:20,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 07:37:20,440 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 07:37:20,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 07:37:20,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 07:37:20,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 07:37:20,456 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:37:20" (1/1) ... [2023-12-19 07:37:20,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aedcabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:20, skipping insertion in model container [2023-12-19 07:37:20,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:37:20" (1/1) ... [2023-12-19 07:37:20,511 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 07:37:20,666 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-33.i[916,929] [2023-12-19 07:37:20,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:37:20,879 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 07:37:20,903 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-33.i[916,929] [2023-12-19 07:37:20,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 07:37:21,013 INFO L206 MainTranslator]: Completed translation [2023-12-19 07:37:21,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21 WrapperNode [2023-12-19 07:37:21,014 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 07:37:21,015 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 07:37:21,015 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 07:37:21,015 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 07:37:21,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (1/1) ... [2023-12-19 07:37:21,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (1/1) ... [2023-12-19 07:37:21,170 INFO L138 Inliner]: procedures = 26, calls = 135, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1012 [2023-12-19 07:37:21,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 07:37:21,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 07:37:21,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 07:37:21,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 07:37:21,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (1/1) ... [2023-12-19 07:37:21,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (1/1) ... [2023-12-19 07:37:21,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (1/1) ... [2023-12-19 07:37:21,269 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 07:37:21,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (1/1) ... [2023-12-19 07:37:21,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (1/1) ... [2023-12-19 07:37:21,297 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (1/1) ... [2023-12-19 07:37:21,316 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (1/1) ... [2023-12-19 07:37:21,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (1/1) ... [2023-12-19 07:37:21,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (1/1) ... [2023-12-19 07:37:21,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 07:37:21,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 07:37:21,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 07:37:21,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 07:37:21,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (1/1) ... [2023-12-19 07:37:21,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 07:37:21,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:21,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 07:37:21,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 07:37:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 07:37:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 07:37:21,445 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 07:37:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 07:37:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 07:37:21,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 07:37:21,606 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 07:37:21,609 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 07:37:22,647 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 07:37:22,696 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 07:37:22,696 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 07:37:22,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:37:22 BoogieIcfgContainer [2023-12-19 07:37:22,696 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 07:37:22,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 07:37:22,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 07:37:22,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 07:37:22,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:37:20" (1/3) ... [2023-12-19 07:37:22,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd04258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:37:22, skipping insertion in model container [2023-12-19 07:37:22,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:37:21" (2/3) ... [2023-12-19 07:37:22,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd04258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:37:22, skipping insertion in model container [2023-12-19 07:37:22,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:37:22" (3/3) ... [2023-12-19 07:37:22,703 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-33.i [2023-12-19 07:37:22,715 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 07:37:22,715 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 07:37:22,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 07:37:22,769 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;@64eba0ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 07:37:22,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 07:37:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 375 states, 250 states have (on average 1.644) internal successors, (411), 251 states have internal predecessors, (411), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-19 07:37:22,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:22,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:22,812 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:22,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:22,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:22,817 INFO L85 PathProgramCache]: Analyzing trace with hash -256622211, now seen corresponding path program 1 times [2023-12-19 07:37:22,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:22,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159053022] [2023-12-19 07:37:22,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:22,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:23,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:23,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159053022] [2023-12-19 07:37:23,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 07:37:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077219688] [2023-12-19 07:37:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:23,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:23,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:23,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:23,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 07:37:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:23,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 07:37:23,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 29282 trivial. 0 not checked. [2023-12-19 07:37:23,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:37:23,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077219688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:37:23,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:37:23,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 07:37:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295792037] [2023-12-19 07:37:23,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:37:23,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 07:37:23,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:23,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 07:37:23,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:37:23,819 INFO L87 Difference]: Start difference. First operand has 375 states, 250 states have (on average 1.644) internal successors, (411), 251 states have internal predecessors, (411), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) Second operand has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-19 07:37:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:23,879 INFO L93 Difference]: Finished difference Result 744 states and 1425 transitions. [2023-12-19 07:37:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 07:37:23,884 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) Word has length 774 [2023-12-19 07:37:23,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:23,892 INFO L225 Difference]: With dead ends: 744 [2023-12-19 07:37:23,893 INFO L226 Difference]: Without dead ends: 370 [2023-12-19 07:37:23,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 07:37:23,901 INFO L413 NwaCegarLoop]: 637 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, 637 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:23,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 637 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:37:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-12-19 07:37:24,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2023-12-19 07:37:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 246 states have (on average 1.6097560975609757) internal successors, (396), 246 states have internal predecessors, (396), 122 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-19 07:37:24,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 640 transitions. [2023-12-19 07:37:24,015 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 640 transitions. Word has length 774 [2023-12-19 07:37:24,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:24,017 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 640 transitions. [2023-12-19 07:37:24,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 2 states have call successors, (122), 2 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-19 07:37:24,017 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 640 transitions. [2023-12-19 07:37:24,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:24,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:24,035 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:24,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:24,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 07:37:24,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:24,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:24,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1213324025, now seen corresponding path program 1 times [2023-12-19 07:37:24,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:24,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017132037] [2023-12-19 07:37:24,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:24,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:24,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:24,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506350986] [2023-12-19 07:37:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:24,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:24,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:24,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:24,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 07:37:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:24,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 07:37:24,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-19 07:37:25,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:37:25,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:25,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017132037] [2023-12-19 07:37:25,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:25,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506350986] [2023-12-19 07:37:25,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506350986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:37:25,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:37:25,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:37:25,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936871479] [2023-12-19 07:37:25,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:37:25,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 07:37:25,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:25,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 07:37:25,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:37:25,027 INFO L87 Difference]: Start difference. First operand 370 states and 640 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-19 07:37:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:25,107 INFO L93 Difference]: Finished difference Result 918 states and 1592 transitions. [2023-12-19 07:37:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 07:37:25,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 774 [2023-12-19 07:37:25,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:25,115 INFO L225 Difference]: With dead ends: 918 [2023-12-19 07:37:25,115 INFO L226 Difference]: Without dead ends: 549 [2023-12-19 07:37:25,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 07:37:25,117 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 296 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:25,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1256 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:37:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2023-12-19 07:37:25,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 546. [2023-12-19 07:37:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 383 states have (on average 1.6422976501305484) internal successors, (629), 384 states have internal predecessors, (629), 160 states have call successors, (160), 2 states have call predecessors, (160), 2 states have return successors, (160), 159 states have call predecessors, (160), 160 states have call successors, (160) [2023-12-19 07:37:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 949 transitions. [2023-12-19 07:37:25,160 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 949 transitions. Word has length 774 [2023-12-19 07:37:25,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:25,161 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 949 transitions. [2023-12-19 07:37:25,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-19 07:37:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 949 transitions. [2023-12-19 07:37:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:25,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:25,188 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:25,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 07:37:25,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 07:37:25,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:25,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:25,398 INFO L85 PathProgramCache]: Analyzing trace with hash 754876021, now seen corresponding path program 1 times [2023-12-19 07:37:25,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:25,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939811551] [2023-12-19 07:37:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:25,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:25,464 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:25,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49595403] [2023-12-19 07:37:25,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:25,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:25,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:25,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:25,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 07:37:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:25,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 07:37:25,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-19 07:37:25,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:37:25,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:25,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939811551] [2023-12-19 07:37:25,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:25,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49595403] [2023-12-19 07:37:25,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49595403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:37:25,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:37:25,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:37:25,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510346973] [2023-12-19 07:37:25,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:37:25,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:37:25,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:25,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:37:25,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:37:25,918 INFO L87 Difference]: Start difference. First operand 546 states and 949 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-19 07:37:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:26,479 INFO L93 Difference]: Finished difference Result 2078 states and 3568 transitions. [2023-12-19 07:37:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 07:37:26,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 774 [2023-12-19 07:37:26,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:26,489 INFO L225 Difference]: With dead ends: 2078 [2023-12-19 07:37:26,489 INFO L226 Difference]: Without dead ends: 1533 [2023-12-19 07:37:26,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:37:26,493 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 979 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:26,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1702 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:37:26,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2023-12-19 07:37:26,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1000. [2023-12-19 07:37:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 757 states have (on average 1.6935270805812417) internal successors, (1282), 760 states have internal predecessors, (1282), 238 states have call successors, (238), 4 states have call predecessors, (238), 4 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) [2023-12-19 07:37:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1758 transitions. [2023-12-19 07:37:26,577 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1758 transitions. Word has length 774 [2023-12-19 07:37:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:26,578 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1758 transitions. [2023-12-19 07:37:26,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-19 07:37:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1758 transitions. [2023-12-19 07:37:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:26,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:26,585 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:26,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:26,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:26,794 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:26,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:26,794 INFO L85 PathProgramCache]: Analyzing trace with hash -62772429, now seen corresponding path program 1 times [2023-12-19 07:37:26,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:26,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487404603] [2023-12-19 07:37:26,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:26,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:26,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:26,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573269956] [2023-12-19 07:37:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:26,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:26,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:26,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:26,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 07:37:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:27,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:37:27,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 13161 proven. 243 refuted. 0 times theorem prover too weak. 16120 trivial. 0 not checked. [2023-12-19 07:37:27,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:37:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 120 proven. 243 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-19 07:37:28,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:28,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487404603] [2023-12-19 07:37:28,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:28,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573269956] [2023-12-19 07:37:28,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573269956] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:37:28,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:37:28,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:37:28,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587408731] [2023-12-19 07:37:28,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:37:28,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:37:28,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:28,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:37:28,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:37:28,356 INFO L87 Difference]: Start difference. First operand 1000 states and 1758 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (203), 2 states have call predecessors, (203), 4 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) [2023-12-19 07:37:28,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:28,987 INFO L93 Difference]: Finished difference Result 1937 states and 3387 transitions. [2023-12-19 07:37:28,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:37:28,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (203), 2 states have call predecessors, (203), 4 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) Word has length 774 [2023-12-19 07:37:28,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:28,992 INFO L225 Difference]: With dead ends: 1937 [2023-12-19 07:37:28,992 INFO L226 Difference]: Without dead ends: 938 [2023-12-19 07:37:28,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1550 GetRequests, 1540 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:37:28,996 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 633 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:28,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1270 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:37:28,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-19 07:37:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 930. [2023-12-19 07:37:29,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 686 states have (on average 1.6647230320699709) internal successors, (1142), 689 states have internal predecessors, (1142), 238 states have call successors, (238), 5 states have call predecessors, (238), 5 states have return successors, (238), 235 states have call predecessors, (238), 238 states have call successors, (238) [2023-12-19 07:37:29,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1618 transitions. [2023-12-19 07:37:29,045 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1618 transitions. Word has length 774 [2023-12-19 07:37:29,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:29,046 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1618 transitions. [2023-12-19 07:37:29,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (203), 2 states have call predecessors, (203), 4 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) [2023-12-19 07:37:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1618 transitions. [2023-12-19 07:37:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:29,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:29,052 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:29,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:29,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:29,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:29,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1490703433, now seen corresponding path program 1 times [2023-12-19 07:37:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:29,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189206748] [2023-12-19 07:37:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:29,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:29,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228091035] [2023-12-19 07:37:29,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:29,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:29,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:29,327 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:29,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 07:37:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:29,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 1745 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:37:29,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:29,784 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-19 07:37:29,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:37:29,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:29,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189206748] [2023-12-19 07:37:29,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:29,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228091035] [2023-12-19 07:37:29,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228091035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:37:29,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:37:29,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 07:37:29,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068525524] [2023-12-19 07:37:29,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:37:29,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:37:29,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:29,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:37:29,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:37:29,787 INFO L87 Difference]: Start difference. First operand 930 states and 1618 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-19 07:37:30,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:30,909 INFO L93 Difference]: Finished difference Result 4049 states and 6935 transitions. [2023-12-19 07:37:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:37:30,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 774 [2023-12-19 07:37:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:30,930 INFO L225 Difference]: With dead ends: 4049 [2023-12-19 07:37:30,930 INFO L226 Difference]: Without dead ends: 3120 [2023-12-19 07:37:30,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 07:37:30,936 INFO L413 NwaCegarLoop]: 1035 mSDtfsCounter, 2392 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2392 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:30,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2392 Valid, 2697 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 07:37:30,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2023-12-19 07:37:31,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 1629. [2023-12-19 07:37:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1629 states, 1221 states have (on average 1.6805896805896805) internal successors, (2052), 1226 states have internal predecessors, (2052), 398 states have call successors, (398), 9 states have call predecessors, (398), 9 states have return successors, (398), 393 states have call predecessors, (398), 398 states have call successors, (398) [2023-12-19 07:37:31,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2848 transitions. [2023-12-19 07:37:31,192 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2848 transitions. Word has length 774 [2023-12-19 07:37:31,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:31,193 INFO L495 AbstractCegarLoop]: Abstraction has 1629 states and 2848 transitions. [2023-12-19 07:37:31,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-19 07:37:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2848 transitions. [2023-12-19 07:37:31,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:31,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:31,200 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:31,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:31,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:31,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:31,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:31,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1986615413, now seen corresponding path program 1 times [2023-12-19 07:37:31,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:31,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016355461] [2023-12-19 07:37:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:31,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:31,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:31,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631875784] [2023-12-19 07:37:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:31,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:31,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:31,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:31,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 07:37:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:31,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:37:31,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-19 07:37:31,900 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:37:31,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:31,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016355461] [2023-12-19 07:37:31,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:31,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631875784] [2023-12-19 07:37:31,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631875784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:37:31,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:37:31,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 07:37:31,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585836683] [2023-12-19 07:37:31,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:37:31,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:37:31,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:31,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:37:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:37:31,903 INFO L87 Difference]: Start difference. First operand 1629 states and 2848 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-19 07:37:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:31,976 INFO L93 Difference]: Finished difference Result 3263 states and 5704 transitions. [2023-12-19 07:37:31,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:37:31,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 774 [2023-12-19 07:37:31,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:31,983 INFO L225 Difference]: With dead ends: 3263 [2023-12-19 07:37:31,984 INFO L226 Difference]: Without dead ends: 1635 [2023-12-19 07:37:31,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 07:37:31,988 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 1 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:31,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1893 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:37:31,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2023-12-19 07:37:32,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1635. [2023-12-19 07:37:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1227 states have (on average 1.6772616136919316) internal successors, (2058), 1232 states have internal predecessors, (2058), 398 states have call successors, (398), 9 states have call predecessors, (398), 9 states have return successors, (398), 393 states have call predecessors, (398), 398 states have call successors, (398) [2023-12-19 07:37:32,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2854 transitions. [2023-12-19 07:37:32,072 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2854 transitions. Word has length 774 [2023-12-19 07:37:32,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:32,072 INFO L495 AbstractCegarLoop]: Abstraction has 1635 states and 2854 transitions. [2023-12-19 07:37:32,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-19 07:37:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2854 transitions. [2023-12-19 07:37:32,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:32,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:32,080 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:32,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:32,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:32,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:32,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:32,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1354411725, now seen corresponding path program 1 times [2023-12-19 07:37:32,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:32,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561503907] [2023-12-19 07:37:32,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:32,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:32,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:32,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468844031] [2023-12-19 07:37:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:32,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:32,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:32,381 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:32,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 07:37:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:32,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:37:32,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 15482 proven. 195 refuted. 0 times theorem prover too weak. 13847 trivial. 0 not checked. [2023-12-19 07:37:33,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:37:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 168 proven. 195 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-19 07:37:34,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:34,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561503907] [2023-12-19 07:37:34,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:34,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468844031] [2023-12-19 07:37:34,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468844031] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:37:34,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:37:34,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 07:37:34,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225101773] [2023-12-19 07:37:34,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:37:34,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 07:37:34,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:34,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 07:37:34,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:37:34,218 INFO L87 Difference]: Start difference. First operand 1635 states and 2854 transitions. Second operand has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 5 states have call successors, (191), 3 states have call predecessors, (191), 5 states have return successors, (191), 5 states have call predecessors, (191), 5 states have call successors, (191) [2023-12-19 07:37:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:34,860 INFO L93 Difference]: Finished difference Result 3291 states and 5727 transitions. [2023-12-19 07:37:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:37:34,863 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 5 states have call successors, (191), 3 states have call predecessors, (191), 5 states have return successors, (191), 5 states have call predecessors, (191), 5 states have call successors, (191) Word has length 774 [2023-12-19 07:37:34,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:34,874 INFO L225 Difference]: With dead ends: 3291 [2023-12-19 07:37:34,874 INFO L226 Difference]: Without dead ends: 1657 [2023-12-19 07:37:34,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1550 GetRequests, 1538 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-12-19 07:37:34,879 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1045 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:34,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 1231 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 07:37:34,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-12-19 07:37:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1643. [2023-12-19 07:37:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1233 states have (on average 1.6715328467153285) internal successors, (2061), 1238 states have internal predecessors, (2061), 398 states have call successors, (398), 11 states have call predecessors, (398), 11 states have return successors, (398), 393 states have call predecessors, (398), 398 states have call successors, (398) [2023-12-19 07:37:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2857 transitions. [2023-12-19 07:37:35,019 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2857 transitions. Word has length 774 [2023-12-19 07:37:35,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:35,020 INFO L495 AbstractCegarLoop]: Abstraction has 1643 states and 2857 transitions. [2023-12-19 07:37:35,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 5 states have call successors, (191), 3 states have call predecessors, (191), 5 states have return successors, (191), 5 states have call predecessors, (191), 5 states have call successors, (191) [2023-12-19 07:37:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2857 transitions. [2023-12-19 07:37:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:35,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:35,029 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:35,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:35,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:35,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:35,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:35,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1029513013, now seen corresponding path program 1 times [2023-12-19 07:37:35,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:35,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123120202] [2023-12-19 07:37:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:35,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:35,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:35,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317420723] [2023-12-19 07:37:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:35,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:35,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:35,300 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:35,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 07:37:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:35,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:37:35,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 14863 proven. 174 refuted. 0 times theorem prover too weak. 14487 trivial. 0 not checked. [2023-12-19 07:37:36,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:37:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 189 proven. 174 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-19 07:37:36,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:36,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123120202] [2023-12-19 07:37:36,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:36,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317420723] [2023-12-19 07:37:36,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317420723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:37:36,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:37:36,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 07:37:36,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197914968] [2023-12-19 07:37:36,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:37:36,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 07:37:36,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:36,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 07:37:36,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 07:37:36,648 INFO L87 Difference]: Start difference. First operand 1643 states and 2857 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (180), 2 states have call predecessors, (180), 4 states have return successors, (181), 2 states have call predecessors, (181), 2 states have call successors, (181) [2023-12-19 07:37:37,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:37,167 INFO L93 Difference]: Finished difference Result 3311 states and 5737 transitions. [2023-12-19 07:37:37,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 07:37:37,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (180), 2 states have call predecessors, (180), 4 states have return successors, (181), 2 states have call predecessors, (181), 2 states have call successors, (181) Word has length 774 [2023-12-19 07:37:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:37,178 INFO L225 Difference]: With dead ends: 3311 [2023-12-19 07:37:37,178 INFO L226 Difference]: Without dead ends: 1669 [2023-12-19 07:37:37,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1550 GetRequests, 1540 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:37:37,183 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 343 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:37,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1260 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:37:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2023-12-19 07:37:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1651. [2023-12-19 07:37:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1239 states have (on average 1.652138821630347) internal successors, (2047), 1244 states have internal predecessors, (2047), 398 states have call successors, (398), 13 states have call predecessors, (398), 13 states have return successors, (398), 393 states have call predecessors, (398), 398 states have call successors, (398) [2023-12-19 07:37:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2843 transitions. [2023-12-19 07:37:37,283 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2843 transitions. Word has length 774 [2023-12-19 07:37:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:37,284 INFO L495 AbstractCegarLoop]: Abstraction has 1651 states and 2843 transitions. [2023-12-19 07:37:37,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (180), 2 states have call predecessors, (180), 4 states have return successors, (181), 2 states have call predecessors, (181), 2 states have call successors, (181) [2023-12-19 07:37:37,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2843 transitions. [2023-12-19 07:37:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:37,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:37,291 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:37,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:37,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 07:37:37,501 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:37,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:37,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1985700047, now seen corresponding path program 1 times [2023-12-19 07:37:37,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:37,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498440087] [2023-12-19 07:37:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:37,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:37,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:37,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819886345] [2023-12-19 07:37:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:37,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:37,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:37,553 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:37,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 07:37:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:37,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 07:37:37,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 6693 proven. 45 refuted. 0 times theorem prover too weak. 22786 trivial. 0 not checked. [2023-12-19 07:37:38,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:37:38,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498440087] [2023-12-19 07:37:38,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:38,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819886345] [2023-12-19 07:37:38,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819886345] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 07:37:38,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:37:38,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-19 07:37:38,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177512522] [2023-12-19 07:37:38,684 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 07:37:38,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:37:38,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:38,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:37:38,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 07:37:38,687 INFO L87 Difference]: Start difference. First operand 1651 states and 2843 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 2 states have call successors, (122), 2 states have call predecessors, (122), 3 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-19 07:37:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:39,218 INFO L93 Difference]: Finished difference Result 3327 states and 5709 transitions. [2023-12-19 07:37:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 07:37:39,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 2 states have call successors, (122), 2 states have call predecessors, (122), 3 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 774 [2023-12-19 07:37:39,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:39,238 INFO L225 Difference]: With dead ends: 3327 [2023-12-19 07:37:39,238 INFO L226 Difference]: Without dead ends: 1677 [2023-12-19 07:37:39,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 866 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:37:39,244 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 428 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:39,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 1248 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 07:37:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2023-12-19 07:37:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1659. [2023-12-19 07:37:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1245 states have (on average 1.642570281124498) internal successors, (2045), 1250 states have internal predecessors, (2045), 398 states have call successors, (398), 15 states have call predecessors, (398), 15 states have return successors, (398), 393 states have call predecessors, (398), 398 states have call successors, (398) [2023-12-19 07:37:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2841 transitions. [2023-12-19 07:37:39,424 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2841 transitions. Word has length 774 [2023-12-19 07:37:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:39,425 INFO L495 AbstractCegarLoop]: Abstraction has 1659 states and 2841 transitions. [2023-12-19 07:37:39,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 2 states have call successors, (122), 2 states have call predecessors, (122), 3 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-12-19 07:37:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2841 transitions. [2023-12-19 07:37:39,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:39,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:39,434 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:39,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:39,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:39,645 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:39,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:39,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1326168525, now seen corresponding path program 1 times [2023-12-19 07:37:39,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:39,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865201836] [2023-12-19 07:37:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:39,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:39,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:39,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403666255] [2023-12-19 07:37:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:39,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:39,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:39,726 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:39,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 07:37:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:40,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 07:37:40,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-19 07:37:41,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 07:37:41,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:41,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865201836] [2023-12-19 07:37:41,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:41,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403666255] [2023-12-19 07:37:41,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403666255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 07:37:41,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 07:37:41,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 07:37:41,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773542629] [2023-12-19 07:37:41,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:37:41,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 07:37:41,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:41,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 07:37:41,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:37:41,012 INFO L87 Difference]: Start difference. First operand 1659 states and 2841 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-19 07:37:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:41,585 INFO L93 Difference]: Finished difference Result 5094 states and 8696 transitions. [2023-12-19 07:37:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:37:41,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 774 [2023-12-19 07:37:41,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:41,616 INFO L225 Difference]: With dead ends: 5094 [2023-12-19 07:37:41,616 INFO L226 Difference]: Without dead ends: 3436 [2023-12-19 07:37:41,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 07:37:41,624 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 408 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:41,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 1776 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 07:37:41,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2023-12-19 07:37:41,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3433. [2023-12-19 07:37:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3433 states, 2538 states have (on average 1.624113475177305) internal successors, (4122), 2549 states have internal predecessors, (4122), 858 states have call successors, (858), 36 states have call predecessors, (858), 36 states have return successors, (858), 847 states have call predecessors, (858), 858 states have call successors, (858) [2023-12-19 07:37:41,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 5838 transitions. [2023-12-19 07:37:41,916 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 5838 transitions. Word has length 774 [2023-12-19 07:37:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:41,916 INFO L495 AbstractCegarLoop]: Abstraction has 3433 states and 5838 transitions. [2023-12-19 07:37:41,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-19 07:37:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 5838 transitions. [2023-12-19 07:37:41,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:41,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:41,925 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:41,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:42,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 07:37:42,135 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:42,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1582595377, now seen corresponding path program 1 times [2023-12-19 07:37:42,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:42,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128848487] [2023-12-19 07:37:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:42,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:42,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:42,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990245644] [2023-12-19 07:37:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:42,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:42,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:42,221 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:42,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 07:37:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:42,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 07:37:42,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 13161 proven. 243 refuted. 0 times theorem prover too weak. 16120 trivial. 0 not checked. [2023-12-19 07:37:43,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:37:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 120 proven. 243 refuted. 0 times theorem prover too weak. 29161 trivial. 0 not checked. [2023-12-19 07:37:43,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:43,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128848487] [2023-12-19 07:37:43,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:43,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990245644] [2023-12-19 07:37:43,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990245644] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 07:37:43,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 07:37:43,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-19 07:37:43,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700853212] [2023-12-19 07:37:43,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 07:37:43,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 07:37:43,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:43,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 07:37:43,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 07:37:43,662 INFO L87 Difference]: Start difference. First operand 3433 states and 5838 transitions. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 2 states have call successors, (203), 2 states have call predecessors, (203), 4 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) [2023-12-19 07:37:44,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:44,974 INFO L93 Difference]: Finished difference Result 8471 states and 14335 transitions. [2023-12-19 07:37:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 07:37:44,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 2 states have call successors, (203), 2 states have call predecessors, (203), 4 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) Word has length 774 [2023-12-19 07:37:44,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:44,995 INFO L225 Difference]: With dead ends: 8471 [2023-12-19 07:37:44,995 INFO L226 Difference]: Without dead ends: 4787 [2023-12-19 07:37:45,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1539 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-19 07:37:45,004 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 2096 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:45,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2137 Valid, 2253 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 07:37:45,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4787 states. [2023-12-19 07:37:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4787 to 4031. [2023-12-19 07:37:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4031 states, 2952 states have (on average 1.603658536585366) internal successors, (4734), 2967 states have internal predecessors, (4734), 1036 states have call successors, (1036), 42 states have call predecessors, (1036), 42 states have return successors, (1036), 1021 states have call predecessors, (1036), 1036 states have call successors, (1036) [2023-12-19 07:37:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4031 states to 4031 states and 6806 transitions. [2023-12-19 07:37:45,404 INFO L78 Accepts]: Start accepts. Automaton has 4031 states and 6806 transitions. Word has length 774 [2023-12-19 07:37:45,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:45,405 INFO L495 AbstractCegarLoop]: Abstraction has 4031 states and 6806 transitions. [2023-12-19 07:37:45,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 2 states have call successors, (203), 2 states have call predecessors, (203), 4 states have return successors, (204), 2 states have call predecessors, (204), 2 states have call successors, (204) [2023-12-19 07:37:45,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4031 states and 6806 transitions. [2023-12-19 07:37:45,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:45,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:45,417 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:45,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 07:37:45,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 07:37:45,629 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:45,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:45,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1460994383, now seen corresponding path program 1 times [2023-12-19 07:37:45,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:45,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056692002] [2023-12-19 07:37:45,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:45,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:45,706 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:45,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621360701] [2023-12-19 07:37:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:45,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:45,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:45,721 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:45,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 07:37:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:46,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 07:37:46,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 07:37:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 1077 proven. 357 refuted. 0 times theorem prover too weak. 28090 trivial. 0 not checked. [2023-12-19 07:37:49,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 07:37:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 29524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29524 trivial. 0 not checked. [2023-12-19 07:37:50,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 07:37:50,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056692002] [2023-12-19 07:37:50,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 07:37:50,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621360701] [2023-12-19 07:37:50,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621360701] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 07:37:50,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 07:37:50,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-12-19 07:37:50,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336644824] [2023-12-19 07:37:50,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 07:37:50,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 07:37:50,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 07:37:50,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 07:37:50,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-19 07:37:50,349 INFO L87 Difference]: Start difference. First operand 4031 states and 6806 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-19 07:37:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 07:37:50,601 INFO L93 Difference]: Finished difference Result 8047 states and 13587 transitions. [2023-12-19 07:37:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 07:37:50,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) Word has length 774 [2023-12-19 07:37:50,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 07:37:50,636 INFO L225 Difference]: With dead ends: 8047 [2023-12-19 07:37:50,636 INFO L226 Difference]: Without dead ends: 4127 [2023-12-19 07:37:50,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1547 GetRequests, 1538 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-19 07:37:50,647 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 632 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 07:37:50,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1262 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 07:37:50,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4127 states. [2023-12-19 07:37:51,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4127 to 4031. [2023-12-19 07:37:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4031 states, 2952 states have (on average 1.5968834688346885) internal successors, (4714), 2967 states have internal predecessors, (4714), 1036 states have call successors, (1036), 42 states have call predecessors, (1036), 42 states have return successors, (1036), 1021 states have call predecessors, (1036), 1036 states have call successors, (1036) [2023-12-19 07:37:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4031 states to 4031 states and 6786 transitions. [2023-12-19 07:37:51,039 INFO L78 Accepts]: Start accepts. Automaton has 4031 states and 6786 transitions. Word has length 774 [2023-12-19 07:37:51,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 07:37:51,040 INFO L495 AbstractCegarLoop]: Abstraction has 4031 states and 6786 transitions. [2023-12-19 07:37:51,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 1 states have call successors, (122), 1 states have call predecessors, (122), 1 states have return successors, (122), 1 states have call predecessors, (122), 1 states have call successors, (122) [2023-12-19 07:37:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 4031 states and 6786 transitions. [2023-12-19 07:37:51,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-12-19 07:37:51,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 07:37:51,049 INFO L195 NwaCegarLoop]: trace histogram [122, 122, 122, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 07:37:51,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 07:37:51,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 07:37:51,260 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 07:37:51,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 07:37:51,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1038292557, now seen corresponding path program 1 times [2023-12-19 07:37:51,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 07:37:51,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297509760] [2023-12-19 07:37:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:51,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 07:37:51,307 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 07:37:51,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544072024] [2023-12-19 07:37:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 07:37:51,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 07:37:51,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 07:37:51,309 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 07:37:51,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 07:37:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 07:37:51,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 07:37:51,727 INFO L285 TraceCheckSpWp]: Computing forward predicates...