/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:51:17,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:51:17,773 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:51:17,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:51:17,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:51:17,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:51:17,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:51:17,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:51:17,806 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:51:17,809 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:51:17,809 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:51:17,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:51:17,810 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:51:17,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:51:17,811 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:51:17,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:51:17,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:51:17,812 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:51:17,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:51:17,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:51:17,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:51:17,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:51:17,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:51:17,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:51:17,813 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:51:17,813 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:51:17,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:51:17,813 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:51:17,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:51:17,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:51:17,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:51:17,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:51:17,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:51:17,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:51:17,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:51:17,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:51:17,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:51:17,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:51:17,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:51:17,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:51:17,816 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:51:17,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:51:17,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:51:17,816 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:51:18,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:51:18,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:51:18,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:51:18,025 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:51:18,025 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:51:18,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i [2023-12-16 02:51:19,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:51:19,274 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:51:19,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i [2023-12-16 02:51:19,283 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62fc6663/e0bcd9d39e0946959e7c2854c82ac1ff/FLAGf2966b3b3 [2023-12-16 02:51:19,294 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62fc6663/e0bcd9d39e0946959e7c2854c82ac1ff [2023-12-16 02:51:19,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:51:19,297 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:51:19,299 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:51:19,299 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:51:19,302 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:51:19,303 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2088f739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19, skipping insertion in model container [2023-12-16 02:51:19,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,337 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:51:19,465 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-250_file-5.i[915,928] [2023-12-16 02:51:19,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:51:19,626 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:51:19,634 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-250_file-5.i[915,928] [2023-12-16 02:51:19,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:51:19,705 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:51:19,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19 WrapperNode [2023-12-16 02:51:19,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:51:19,706 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:51:19,706 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:51:19,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:51:19,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,725 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,768 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 454 [2023-12-16 02:51:19,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:51:19,769 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:51:19,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:51:19,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:51:19,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,795 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,821 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 02:51:19,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,860 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,866 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,886 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,895 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:51:19,895 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:51:19,895 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:51:19,896 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:51:19,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (1/1) ... [2023-12-16 02:51:19,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:51:19,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:19,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 02:51:19,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 02:51:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:51:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 02:51:19,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 02:51:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:51:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:51:19,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:51:20,070 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:51:20,071 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:51:20,678 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:51:20,722 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:51:20,722 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:51:20,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:20 BoogieIcfgContainer [2023-12-16 02:51:20,722 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:51:20,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:51:20,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:51:20,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:51:20,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:51:19" (1/3) ... [2023-12-16 02:51:20,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f782ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:51:20, skipping insertion in model container [2023-12-16 02:51:20,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:19" (2/3) ... [2023-12-16 02:51:20,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f782ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:51:20, skipping insertion in model container [2023-12-16 02:51:20,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:20" (3/3) ... [2023-12-16 02:51:20,728 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-5.i [2023-12-16 02:51:20,739 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:51:20,740 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:51:20,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:51:20,784 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;@3316529, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:51:20,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:51:20,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 114 states have (on average 1.5263157894736843) internal successors, (174), 115 states have internal predecessors, (174), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-16 02:51:20,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-16 02:51:20,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:20,815 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:20,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:20,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:20,821 INFO L85 PathProgramCache]: Analyzing trace with hash 64895704, now seen corresponding path program 1 times [2023-12-16 02:51:20,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:20,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577598546] [2023-12-16 02:51:20,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:20,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:21,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:51:21,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577598546] [2023-12-16 02:51:21,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 02:51:21,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063486439] [2023-12-16 02:51:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:21,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:21,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:21,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:21,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:51:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:21,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 02:51:21,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:51:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2023-12-16 02:51:21,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:51:21,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063486439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:51:21,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:51:21,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:51:21,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433471299] [2023-12-16 02:51:21,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:51:21,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:51:21,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:51:21,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:51:21,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:51:21,433 INFO L87 Difference]: Start difference. First operand has 184 states, 114 states have (on average 1.5263157894736843) internal successors, (174), 115 states have internal predecessors, (174), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-16 02:51:21,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:51:21,496 INFO L93 Difference]: Finished difference Result 365 states and 681 transitions. [2023-12-16 02:51:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:51:21,498 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 423 [2023-12-16 02:51:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:51:21,504 INFO L225 Difference]: With dead ends: 365 [2023-12-16 02:51:21,504 INFO L226 Difference]: Without dead ends: 182 [2023-12-16 02:51:21,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:51:21,511 INFO L413 NwaCegarLoop]: 298 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, 298 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:51:21,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:51:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-16 02:51:21,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-12-16 02:51:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 113 states have (on average 1.4778761061946903) internal successors, (167), 113 states have internal predecessors, (167), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-16 02:51:21,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 301 transitions. [2023-12-16 02:51:21,581 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 301 transitions. Word has length 423 [2023-12-16 02:51:21,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:51:21,582 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 301 transitions. [2023-12-16 02:51:21,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2023-12-16 02:51:21,583 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 301 transitions. [2023-12-16 02:51:21,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-16 02:51:21,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:21,592 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:21,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:51:21,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 02:51:21,799 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:21,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:21,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1629020412, now seen corresponding path program 1 times [2023-12-16 02:51:21,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:21,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801150101] [2023-12-16 02:51:21,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:21,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:21,899 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:51:21,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705749734] [2023-12-16 02:51:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:21,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:21,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:21,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:21,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:51:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:22,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:51:22,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:51:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3082 proven. 42 refuted. 0 times theorem prover too weak. 5720 trivial. 0 not checked. [2023-12-16 02:51:22,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:51:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 156 proven. 42 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-16 02:51:22,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:51:22,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801150101] [2023-12-16 02:51:22,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:51:22,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705749734] [2023-12-16 02:51:22,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705749734] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:51:22,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:51:22,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-16 02:51:22,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098105872] [2023-12-16 02:51:22,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:51:22,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 02:51:22,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:51:22,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 02:51:22,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 02:51:22,633 INFO L87 Difference]: Start difference. First operand 182 states and 301 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2023-12-16 02:51:22,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:51:22,929 INFO L93 Difference]: Finished difference Result 369 states and 606 transitions. [2023-12-16 02:51:22,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 02:51:22,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) Word has length 423 [2023-12-16 02:51:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:51:22,932 INFO L225 Difference]: With dead ends: 369 [2023-12-16 02:51:22,932 INFO L226 Difference]: Without dead ends: 188 [2023-12-16 02:51:22,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-16 02:51:22,934 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 293 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:51:22,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 531 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 02:51:22,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-16 02:51:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2023-12-16 02:51:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 116 states have (on average 1.456896551724138) internal successors, (169), 116 states have internal predecessors, (169), 67 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-16 02:51:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 303 transitions. [2023-12-16 02:51:22,954 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 303 transitions. Word has length 423 [2023-12-16 02:51:22,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:51:22,955 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 303 transitions. [2023-12-16 02:51:22,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 3 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 3 states have call predecessors, (82), 3 states have call successors, (82) [2023-12-16 02:51:22,955 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 303 transitions. [2023-12-16 02:51:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-16 02:51:22,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:22,957 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:22,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 02:51:23,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-16 02:51:23,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:23,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:23,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1654829634, now seen corresponding path program 1 times [2023-12-16 02:51:23,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:23,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974969832] [2023-12-16 02:51:23,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:23,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:23,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:51:23,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783903158] [2023-12-16 02:51:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:23,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:23,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:23,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:23,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:51:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:23,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 02:51:23,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:51:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3366 proven. 48 refuted. 0 times theorem prover too weak. 5430 trivial. 0 not checked. [2023-12-16 02:51:24,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:51:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 150 proven. 48 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-16 02:51:24,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:51:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974969832] [2023-12-16 02:51:24,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:51:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783903158] [2023-12-16 02:51:24,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783903158] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:51:24,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:51:24,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-16 02:51:24,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913190767] [2023-12-16 02:51:24,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:51:24,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 02:51:24,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:51:24,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 02:51:24,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-16 02:51:24,486 INFO L87 Difference]: Start difference. First operand 186 states and 303 transitions. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) [2023-12-16 02:51:27,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:51:27,673 INFO L93 Difference]: Finished difference Result 2007 states and 3211 transitions. [2023-12-16 02:51:27,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-16 02:51:27,674 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) Word has length 423 [2023-12-16 02:51:27,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:51:27,685 INFO L225 Difference]: With dead ends: 2007 [2023-12-16 02:51:27,685 INFO L226 Difference]: Without dead ends: 1822 [2023-12-16 02:51:27,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=568, Invalid=1502, Unknown=0, NotChecked=0, Total=2070 [2023-12-16 02:51:27,689 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 2610 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 1661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 4153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1661 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:51:27,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2760 Valid, 3015 Invalid, 4153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1661 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 02:51:27,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2023-12-16 02:51:27,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1037. [2023-12-16 02:51:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 608 states have (on average 1.3700657894736843) internal successors, (833), 612 states have internal predecessors, (833), 414 states have call successors, (414), 14 states have call predecessors, (414), 14 states have return successors, (414), 410 states have call predecessors, (414), 414 states have call successors, (414) [2023-12-16 02:51:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1661 transitions. [2023-12-16 02:51:27,862 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1661 transitions. Word has length 423 [2023-12-16 02:51:27,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:51:27,865 INFO L495 AbstractCegarLoop]: Abstraction has 1037 states and 1661 transitions. [2023-12-16 02:51:27,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) [2023-12-16 02:51:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1661 transitions. [2023-12-16 02:51:27,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-16 02:51:27,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:27,869 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:27,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:51:28,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:28,078 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:28,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash -951193920, now seen corresponding path program 1 times [2023-12-16 02:51:28,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:28,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389842568] [2023-12-16 02:51:28,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:28,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:28,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:51:28,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989312169] [2023-12-16 02:51:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:28,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:28,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:28,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:28,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 02:51:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:28,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 02:51:28,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:51:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4113 proven. 252 refuted. 0 times theorem prover too weak. 4479 trivial. 0 not checked. [2023-12-16 02:51:29,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:51:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 138 proven. 255 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2023-12-16 02:51:40,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:51:40,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389842568] [2023-12-16 02:51:40,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:51:40,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989312169] [2023-12-16 02:51:40,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989312169] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:51:40,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:51:40,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2023-12-16 02:51:40,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578609118] [2023-12-16 02:51:40,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:51:40,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 02:51:40,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:51:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 02:51:40,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2023-12-16 02:51:40,445 INFO L87 Difference]: Start difference. First operand 1037 states and 1661 transitions. Second operand has 21 states, 20 states have (on average 8.5) internal successors, (170), 19 states have internal predecessors, (170), 6 states have call successors, (134), 4 states have call predecessors, (134), 7 states have return successors, (134), 6 states have call predecessors, (134), 6 states have call successors, (134) [2023-12-16 02:51:51,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:51:51,858 INFO L93 Difference]: Finished difference Result 11264 states and 17700 transitions. [2023-12-16 02:51:51,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-16 02:51:51,859 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.5) internal successors, (170), 19 states have internal predecessors, (170), 6 states have call successors, (134), 4 states have call predecessors, (134), 7 states have return successors, (134), 6 states have call predecessors, (134), 6 states have call successors, (134) Word has length 423 [2023-12-16 02:51:51,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:51:51,910 INFO L225 Difference]: With dead ends: 11264 [2023-12-16 02:51:51,910 INFO L226 Difference]: Without dead ends: 10228 [2023-12-16 02:51:51,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 835 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1265, Invalid=2517, Unknown=0, NotChecked=0, Total=3782 [2023-12-16 02:51:51,920 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 3015 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 4075 mSolverCounterSat, 1232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3155 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 5307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1232 IncrementalHoareTripleChecker+Valid, 4075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:51:51,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3155 Valid, 4068 Invalid, 5307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1232 Valid, 4075 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-12-16 02:51:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10228 states. [2023-12-16 02:51:52,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10228 to 4924. [2023-12-16 02:51:52,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4924 states, 3107 states have (on average 1.3897650466688123) internal successors, (4318), 3140 states have internal predecessors, (4318), 1725 states have call successors, (1725), 91 states have call predecessors, (1725), 91 states have return successors, (1725), 1692 states have call predecessors, (1725), 1725 states have call successors, (1725) [2023-12-16 02:51:52,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4924 states to 4924 states and 7768 transitions. [2023-12-16 02:51:52,641 INFO L78 Accepts]: Start accepts. Automaton has 4924 states and 7768 transitions. Word has length 423 [2023-12-16 02:51:52,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:51:52,642 INFO L495 AbstractCegarLoop]: Abstraction has 4924 states and 7768 transitions. [2023-12-16 02:51:52,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.5) internal successors, (170), 19 states have internal predecessors, (170), 6 states have call successors, (134), 4 states have call predecessors, (134), 7 states have return successors, (134), 6 states have call predecessors, (134), 6 states have call successors, (134) [2023-12-16 02:51:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4924 states and 7768 transitions. [2023-12-16 02:51:52,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-16 02:51:52,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:51:52,646 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:51:52,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 02:51:52,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:52,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:51:52,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:51:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash -732339202, now seen corresponding path program 1 times [2023-12-16 02:51:52,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:51:52,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230983055] [2023-12-16 02:51:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:52,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:51:52,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:51:52,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797021010] [2023-12-16 02:51:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:51:52,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:51:52,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:51:52,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:51:52,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 02:51:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:51:53,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 02:51:53,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:51:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 951 proven. 558 refuted. 0 times theorem prover too weak. 7335 trivial. 0 not checked. [2023-12-16 02:51:55,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:51:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 12 proven. 381 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2023-12-16 02:51:57,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:51:57,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230983055] [2023-12-16 02:51:57,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:51:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797021010] [2023-12-16 02:51:57,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797021010] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:51:57,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:51:57,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2023-12-16 02:51:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136838638] [2023-12-16 02:51:57,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:51:57,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 02:51:57,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:51:57,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 02:51:57,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2023-12-16 02:51:57,194 INFO L87 Difference]: Start difference. First operand 4924 states and 7768 transitions. Second operand has 23 states, 22 states have (on average 8.863636363636363) internal successors, (195), 21 states have internal predecessors, (195), 8 states have call successors, (134), 5 states have call predecessors, (134), 8 states have return successors, (134), 6 states have call predecessors, (134), 8 states have call successors, (134) [2023-12-16 02:52:00,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:52:00,528 INFO L93 Difference]: Finished difference Result 16627 states and 25242 transitions. [2023-12-16 02:52:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 02:52:00,529 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 8.863636363636363) internal successors, (195), 21 states have internal predecessors, (195), 8 states have call successors, (134), 5 states have call predecessors, (134), 8 states have return successors, (134), 6 states have call predecessors, (134), 8 states have call successors, (134) Word has length 423 [2023-12-16 02:52:00,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:52:00,590 INFO L225 Difference]: With dead ends: 16627 [2023-12-16 02:52:00,590 INFO L226 Difference]: Without dead ends: 11704 [2023-12-16 02:52:00,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 865 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=479, Invalid=1243, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 02:52:00,604 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 709 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:52:00,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1795 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 02:52:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11704 states. [2023-12-16 02:52:02,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11704 to 10979. [2023-12-16 02:52:02,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10979 states, 7136 states have (on average 1.351177130044843) internal successors, (9642), 7202 states have internal predecessors, (9642), 3450 states have call successors, (3450), 392 states have call predecessors, (3450), 392 states have return successors, (3450), 3384 states have call predecessors, (3450), 3450 states have call successors, (3450) [2023-12-16 02:52:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10979 states to 10979 states and 16542 transitions. [2023-12-16 02:52:02,130 INFO L78 Accepts]: Start accepts. Automaton has 10979 states and 16542 transitions. Word has length 423 [2023-12-16 02:52:02,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:52:02,130 INFO L495 AbstractCegarLoop]: Abstraction has 10979 states and 16542 transitions. [2023-12-16 02:52:02,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 8.863636363636363) internal successors, (195), 21 states have internal predecessors, (195), 8 states have call successors, (134), 5 states have call predecessors, (134), 8 states have return successors, (134), 6 states have call predecessors, (134), 8 states have call successors, (134) [2023-12-16 02:52:02,131 INFO L276 IsEmpty]: Start isEmpty. Operand 10979 states and 16542 transitions. [2023-12-16 02:52:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-16 02:52:02,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:52:02,135 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:52:02,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 02:52:02,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:52:02,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:52:02,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:52:02,344 INFO L85 PathProgramCache]: Analyzing trace with hash -789597504, now seen corresponding path program 1 times [2023-12-16 02:52:02,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:52:02,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30728557] [2023-12-16 02:52:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:52:02,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:52:02,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:52:02,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732861339] [2023-12-16 02:52:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:52:02,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:52:02,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:52:02,397 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:52:02,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 02:52:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:52:02,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:52:02,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:52:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-16 02:52:03,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:52:03,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:52:03,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30728557] [2023-12-16 02:52:03,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:52:03,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732861339] [2023-12-16 02:52:03,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732861339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:52:03,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:52:03,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 02:52:03,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488836591] [2023-12-16 02:52:03,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:52:03,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 02:52:03,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:52:03,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 02:52:03,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:52:03,317 INFO L87 Difference]: Start difference. First operand 10979 states and 16542 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 02:52:08,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:52:08,403 INFO L93 Difference]: Finished difference Result 46739 states and 70150 transitions. [2023-12-16 02:52:08,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 02:52:08,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 423 [2023-12-16 02:52:08,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:52:08,504 INFO L225 Difference]: With dead ends: 46739 [2023-12-16 02:52:08,504 INFO L226 Difference]: Without dead ends: 35761 [2023-12-16 02:52:08,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 02:52:08,533 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1899 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:52:08,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 1893 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 02:52:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35761 states. [2023-12-16 02:52:13,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35761 to 33249. [2023-12-16 02:52:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33249 states, 21174 states have (on average 1.322848776801738) internal successors, (28010), 21366 states have internal predecessors, (28010), 10856 states have call successors, (10856), 1218 states have call predecessors, (10856), 1218 states have return successors, (10856), 10664 states have call predecessors, (10856), 10856 states have call successors, (10856) [2023-12-16 02:52:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33249 states to 33249 states and 49722 transitions. [2023-12-16 02:52:13,976 INFO L78 Accepts]: Start accepts. Automaton has 33249 states and 49722 transitions. Word has length 423 [2023-12-16 02:52:13,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:52:13,977 INFO L495 AbstractCegarLoop]: Abstraction has 33249 states and 49722 transitions. [2023-12-16 02:52:13,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-16 02:52:13,978 INFO L276 IsEmpty]: Start isEmpty. Operand 33249 states and 49722 transitions. [2023-12-16 02:52:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-16 02:52:13,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:52:13,985 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:52:14,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 02:52:14,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:52:14,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:52:14,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:52:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash 596605890, now seen corresponding path program 1 times [2023-12-16 02:52:14,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:52:14,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793731297] [2023-12-16 02:52:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:52:14,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:52:14,223 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:52:14,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032766902] [2023-12-16 02:52:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:52:14,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:52:14,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:52:14,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:52:14,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 02:52:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 02:52:14,554 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. Received shutdown request... [2023-12-16 02:52:23,101 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:52:23,147 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:52:24,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 02:52:24,302 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process [2023-12-16 02:52:24,309 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-16 02:52:24,310 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:52:24,311 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process [2023-12-16 02:52:24,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:52:24,311 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 424 with TraceHistMax 67,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-16 02:52:24,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 137 [2023-12-16 02:52:24,317 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:52:24,319 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:52:24,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:52:24 BoogieIcfgContainer [2023-12-16 02:52:24,321 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:52:24,322 INFO L158 Benchmark]: Toolchain (without parser) took 65025.19ms. Allocated memory was 228.6MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 162.1MB in the beginning and 3.0GB in the end (delta: -2.8GB). Peak memory consumption was 788.7MB. Max. memory is 8.0GB. [2023-12-16 02:52:24,322 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 228.6MB. Free memory is still 177.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:52:24,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.68ms. Allocated memory was 228.6MB in the beginning and 320.9MB in the end (delta: 92.3MB). Free memory was 161.9MB in the beginning and 276.8MB in the end (delta: -114.9MB). Peak memory consumption was 21.3MB. Max. memory is 8.0GB. [2023-12-16 02:52:24,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.28ms. Allocated memory is still 320.9MB. Free memory was 276.8MB in the beginning and 268.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-16 02:52:24,324 INFO L158 Benchmark]: Boogie Preprocessor took 126.13ms. Allocated memory is still 320.9MB. Free memory was 268.4MB in the beginning and 256.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 02:52:24,324 INFO L158 Benchmark]: RCFGBuilder took 826.91ms. Allocated memory is still 320.9MB. Free memory was 256.9MB in the beginning and 271.9MB in the end (delta: -15.0MB). Peak memory consumption was 50.0MB. Max. memory is 8.0GB. [2023-12-16 02:52:24,326 INFO L158 Benchmark]: TraceAbstraction took 63597.59ms. Allocated memory was 320.9MB in the beginning and 3.8GB in the end (delta: 3.5GB). Free memory was 271.4MB in the beginning and 3.0GB in the end (delta: -2.7GB). Peak memory consumption was 804.4MB. Max. memory is 8.0GB. [2023-12-16 02:52:24,327 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 228.6MB. Free memory is still 177.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 406.68ms. Allocated memory was 228.6MB in the beginning and 320.9MB in the end (delta: 92.3MB). Free memory was 161.9MB in the beginning and 276.8MB in the end (delta: -114.9MB). Peak memory consumption was 21.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.28ms. Allocated memory is still 320.9MB. Free memory was 276.8MB in the beginning and 268.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 126.13ms. Allocated memory is still 320.9MB. Free memory was 268.4MB in the beginning and 256.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * RCFGBuilder took 826.91ms. Allocated memory is still 320.9MB. Free memory was 256.9MB in the beginning and 271.9MB in the end (delta: -15.0MB). Peak memory consumption was 50.0MB. Max. memory is 8.0GB. * TraceAbstraction took 63597.59ms. Allocated memory was 320.9MB in the beginning and 3.8GB in the end (delta: 3.5GB). Free memory was 271.4MB in the beginning and 3.0GB in the end (delta: -2.7GB). Peak memory consumption was 804.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 424 with TraceHistMax 67,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 184 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63.6s, OverallIterations: 7, TraceHistogramMax: 67, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 23.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8870 SdHoareTripleChecker+Valid, 14.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8526 mSDsluCounter, 11600 SdHoareTripleChecker+Invalid, 12.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9204 mSDsCounter, 4032 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8850 IncrementalHoareTripleChecker+Invalid, 12882 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4032 mSolverCounterUnsat, 2396 mSDtfsCounter, 8850 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4339 GetRequests, 4176 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2226 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33249occurred in iteration=6, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 9328 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 2961 NumberOfCodeBlocks, 2961 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 4220 ConstructedInterpolants, 0 QuantifiedInterpolants, 29793 SizeOfPredicates, 29 NumberOfNonLiveVariables, 5787 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 86814/88440 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown