/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-100_file-4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:45:00,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:45:00,761 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 02:45:00,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:45:00,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:45:00,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:45:00,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:45:00,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:45:00,800 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:45:00,803 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:45:00,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:45:00,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:45:00,804 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:45:00,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:45:00,806 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:45:00,806 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:45:00,806 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:45:00,807 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:45:00,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:45:00,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:45:00,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:45:00,808 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:45:00,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:45:00,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:45:00,808 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:45:00,809 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:45:00,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:45:00,809 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:45:00,810 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:45:00,810 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:45:00,811 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:45:00,811 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:45:00,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:45:00,811 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:45:00,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:45:00,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:45:00,812 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:45:00,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:45:00,812 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:45:00,812 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:45:00,813 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:45:00,813 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:45:00,813 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:45:00,813 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:45:01,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:45:01,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:45:01,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:45:01,080 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:45:01,080 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:45:01,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-4.i [2023-12-16 02:45:02,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:45:02,775 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:45:02,776 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-4.i [2023-12-16 02:45:02,795 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e9dceddc/74b45c3998f24cceb1c73438463d1710/FLAG9d9d6ce35 [2023-12-16 02:45:02,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e9dceddc/74b45c3998f24cceb1c73438463d1710 [2023-12-16 02:45:02,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:45:02,837 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:45:02,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:45:02,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:45:02,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:45:02,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:45:02" (1/1) ... [2023-12-16 02:45:02,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75729cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:02, skipping insertion in model container [2023-12-16 02:45:02,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:45:02" (1/1) ... [2023-12-16 02:45:02,941 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:45:03,216 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-100_file-4.i[915,928] [2023-12-16 02:45:03,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:45:03,445 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:45:03,469 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-100_file-4.i[915,928] [2023-12-16 02:45:03,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:45:03,625 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:45:03,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03 WrapperNode [2023-12-16 02:45:03,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:45:03,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:45:03,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:45:03,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:45:03,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (1/1) ... [2023-12-16 02:45:03,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (1/1) ... [2023-12-16 02:45:03,758 INFO L138 Inliner]: procedures = 26, calls = 87, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 383 [2023-12-16 02:45:03,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:45:03,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:45:03,759 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:45:03,759 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:45:03,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (1/1) ... [2023-12-16 02:45:03,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (1/1) ... [2023-12-16 02:45:03,813 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (1/1) ... [2023-12-16 02:45:03,870 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 02:45:03,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (1/1) ... [2023-12-16 02:45:03,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (1/1) ... [2023-12-16 02:45:03,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (1/1) ... [2023-12-16 02:45:03,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (1/1) ... [2023-12-16 02:45:03,904 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (1/1) ... [2023-12-16 02:45:03,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (1/1) ... [2023-12-16 02:45:03,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:45:03,912 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:45:03,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:45:03,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:45:03,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (1/1) ... [2023-12-16 02:45:03,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:45:03,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:45:03,963 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 02:45:03,989 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 02:45:03,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:45:03,998 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 02:45:03,998 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 02:45:03,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:45:03,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:45:03,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:45:04,123 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:45:04,125 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:45:04,659 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:45:04,717 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:45:04,717 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:45:04,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:45:04 BoogieIcfgContainer [2023-12-16 02:45:04,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:45:04,720 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:45:04,720 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:45:04,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:45:04,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:45:02" (1/3) ... [2023-12-16 02:45:04,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40049cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:45:04, skipping insertion in model container [2023-12-16 02:45:04,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:45:03" (2/3) ... [2023-12-16 02:45:04,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40049cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:45:04, skipping insertion in model container [2023-12-16 02:45:04,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:45:04" (3/3) ... [2023-12-16 02:45:04,726 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-4.i [2023-12-16 02:45:04,738 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:45:04,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:45:04,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:45:04,806 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;@6cf6f47a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:45:04,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:45:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 86 states have (on average 1.4186046511627908) internal successors, (122), 87 states have internal predecessors, (122), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 02:45:04,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-12-16 02:45:04,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:45:04,841 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:04,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:45:04,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:45:04,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1110421112, now seen corresponding path program 1 times [2023-12-16 02:45:04,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:45:04,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617514709] [2023-12-16 02:45:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:45:04,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:45:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:45:05,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:45:05,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617514709] [2023-12-16 02:45:05,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 02:45:05,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326575500] [2023-12-16 02:45:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:45:05,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:45:05,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:45:05,259 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 02:45:05,278 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 02:45:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:45:05,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 02:45:05,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:45:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2023-12-16 02:45:05,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:45:05,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326575500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:45:05,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:45:05,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:45:05,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009671431] [2023-12-16 02:45:05,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:45:05,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:45:05,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:45:05,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:45:05,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:45:05,744 INFO L87 Difference]: Start difference. First operand has 163 states, 86 states have (on average 1.4186046511627908) internal successors, (122), 87 states have internal predecessors, (122), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) [2023-12-16 02:45:05,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:45:05,829 INFO L93 Difference]: Finished difference Result 323 states and 612 transitions. [2023-12-16 02:45:05,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:45:05,832 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) Word has length 439 [2023-12-16 02:45:05,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:45:05,843 INFO L225 Difference]: With dead ends: 323 [2023-12-16 02:45:05,844 INFO L226 Difference]: Without dead ends: 161 [2023-12-16 02:45:05,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 438 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 02:45:05,858 INFO L413 NwaCegarLoop]: 261 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, 261 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 02:45:05,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:45:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-16 02:45:05,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-16 02:45:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 85 states have (on average 1.3647058823529412) internal successors, (116), 85 states have internal predecessors, (116), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 02:45:05,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 264 transitions. [2023-12-16 02:45:05,930 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 264 transitions. Word has length 439 [2023-12-16 02:45:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:45:05,932 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 264 transitions. [2023-12-16 02:45:05,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) [2023-12-16 02:45:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 264 transitions. [2023-12-16 02:45:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-12-16 02:45:05,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:45:05,948 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:05,959 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 02:45:06,155 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 02:45:06,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:45:06,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:45:06,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1150036727, now seen corresponding path program 1 times [2023-12-16 02:45:06,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:45:06,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477602632] [2023-12-16 02:45:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:45:06,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:45:06,267 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:45:06,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436514562] [2023-12-16 02:45:06,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:45:06,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:45:06,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:45:06,269 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 02:45:06,290 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 02:45:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:45:06,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 02:45:06,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:45:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 363 proven. 216 refuted. 0 times theorem prover too weak. 10225 trivial. 0 not checked. [2023-12-16 02:45:07,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:45:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 3 proven. 216 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 02:45:07,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:45:07,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477602632] [2023-12-16 02:45:07,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:45:07,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436514562] [2023-12-16 02:45:07,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436514562] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:45:07,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:45:07,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-16 02:45:07,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396034811] [2023-12-16 02:45:07,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:45:07,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 02:45:07,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:45:07,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 02:45:07,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 02:45:07,650 INFO L87 Difference]: Start difference. First operand 161 states and 264 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2023-12-16 02:45:08,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:45:08,783 INFO L93 Difference]: Finished difference Result 496 states and 802 transitions. [2023-12-16 02:45:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 02:45:08,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) Word has length 440 [2023-12-16 02:45:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:45:08,792 INFO L225 Difference]: With dead ends: 496 [2023-12-16 02:45:08,793 INFO L226 Difference]: Without dead ends: 336 [2023-12-16 02:45:08,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 869 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2023-12-16 02:45:08,795 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 196 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:45:08,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1260 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 02:45:08,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-16 02:45:08,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 326. [2023-12-16 02:45:08,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 173 states have (on average 1.3410404624277457) internal successors, (232), 173 states have internal predecessors, (232), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-16 02:45:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 528 transitions. [2023-12-16 02:45:08,895 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 528 transitions. Word has length 440 [2023-12-16 02:45:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:45:08,900 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 528 transitions. [2023-12-16 02:45:08,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2023-12-16 02:45:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 528 transitions. [2023-12-16 02:45:08,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-12-16 02:45:08,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:45:08,908 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:08,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 02:45:09,118 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 02:45:09,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:45:09,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:45:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1150096309, now seen corresponding path program 1 times [2023-12-16 02:45:09,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:45:09,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472379637] [2023-12-16 02:45:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:45:09,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:45:09,199 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:45:09,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590948071] [2023-12-16 02:45:09,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:45:09,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:45:09,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:45:09,205 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 02:45:09,224 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 02:45:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:45:09,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 02:45:09,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:45:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 363 proven. 216 refuted. 0 times theorem prover too weak. 10225 trivial. 0 not checked. [2023-12-16 02:45:10,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:45:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 3 proven. 216 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2023-12-16 02:45:10,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:45:10,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472379637] [2023-12-16 02:45:10,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:45:10,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590948071] [2023-12-16 02:45:10,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590948071] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:45:10,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:45:10,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-16 02:45:10,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814599308] [2023-12-16 02:45:10,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:45:10,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 02:45:10,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:45:10,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 02:45:10,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-16 02:45:10,514 INFO L87 Difference]: Start difference. First operand 326 states and 528 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2023-12-16 02:45:11,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:45:11,091 INFO L93 Difference]: Finished difference Result 502 states and 804 transitions. [2023-12-16 02:45:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 02:45:11,092 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) Word has length 440 [2023-12-16 02:45:11,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:45:11,094 INFO L225 Difference]: With dead ends: 502 [2023-12-16 02:45:11,094 INFO L226 Difference]: Without dead ends: 173 [2023-12-16 02:45:11,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 870 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=273, Unknown=0, NotChecked=0, Total=420 [2023-12-16 02:45:11,096 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 352 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:45:11,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 365 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 02:45:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-16 02:45:11,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2023-12-16 02:45:11,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 89 states have (on average 1.2808988764044944) internal successors, (114), 89 states have internal predecessors, (114), 74 states have call successors, (74), 3 states have call predecessors, (74), 3 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-12-16 02:45:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 262 transitions. [2023-12-16 02:45:11,116 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 262 transitions. Word has length 440 [2023-12-16 02:45:11,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:45:11,117 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 262 transitions. [2023-12-16 02:45:11,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 2 states have call successors, (146), 2 states have call predecessors, (146), 4 states have return successors, (147), 2 states have call predecessors, (147), 2 states have call successors, (147) [2023-12-16 02:45:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 262 transitions. [2023-12-16 02:45:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-16 02:45:11,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:45:11,126 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:11,136 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 02:45:11,334 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 02:45:11,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:45:11,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:45:11,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2000024560, now seen corresponding path program 1 times [2023-12-16 02:45:11,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:45:11,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307425850] [2023-12-16 02:45:11,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:45:11,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:45:11,388 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:45:11,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223372051] [2023-12-16 02:45:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:45:11,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:45:11,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:45:11,390 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 02:45:11,408 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 02:45:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:45:11,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:45:11,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:45:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2023-12-16 02:45:11,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:45:11,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:45:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307425850] [2023-12-16 02:45:11,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:45:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223372051] [2023-12-16 02:45:11,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223372051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:45:11,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:45:11,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:45:11,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277684368] [2023-12-16 02:45:11,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:45:11,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:45:11,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:45:11,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:45:11,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:45:11,669 INFO L87 Difference]: Start difference. First operand 167 states and 262 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 02:45:11,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:45:11,972 INFO L93 Difference]: Finished difference Result 503 states and 787 transitions. [2023-12-16 02:45:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 02:45:11,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 441 [2023-12-16 02:45:11,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:45:11,976 INFO L225 Difference]: With dead ends: 503 [2023-12-16 02:45:11,976 INFO L226 Difference]: Without dead ends: 337 [2023-12-16 02:45:11,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:45:11,977 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 258 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:45:11,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1070 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 02:45:11,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-12-16 02:45:12,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 330. [2023-12-16 02:45:12,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 175 states have (on average 1.2685714285714285) internal successors, (222), 175 states have internal predecessors, (222), 148 states have call successors, (148), 6 states have call predecessors, (148), 6 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-16 02:45:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 518 transitions. [2023-12-16 02:45:12,020 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 518 transitions. Word has length 441 [2023-12-16 02:45:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:45:12,021 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 518 transitions. [2023-12-16 02:45:12,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2023-12-16 02:45:12,022 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 518 transitions. [2023-12-16 02:45:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-12-16 02:45:12,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:45:12,025 INFO L195 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:12,052 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 02:45:12,232 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 02:45:12,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:45:12,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:45:12,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1485596110, now seen corresponding path program 1 times [2023-12-16 02:45:12,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:45:12,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589556440] [2023-12-16 02:45:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:45:12,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:45:12,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 02:45:12,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513426024] [2023-12-16 02:45:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:45:12,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:45:12,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:45:12,272 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 02:45:12,294 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 02:45:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:45:12,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 02:45:12,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:45:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 2427 proven. 753 refuted. 0 times theorem prover too weak. 7624 trivial. 0 not checked. [2023-12-16 02:45:18,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:46:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 87 proven. 771 refuted. 0 times theorem prover too weak. 9946 trivial. 0 not checked. [2023-12-16 02:46:06,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:46:06,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589556440] [2023-12-16 02:46:06,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 02:46:06,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513426024] [2023-12-16 02:46:06,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513426024] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:46:06,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:46:06,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 33 [2023-12-16 02:46:06,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43005029] [2023-12-16 02:46:06,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 02:46:06,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-16 02:46:06,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:46:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-16 02:46:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 02:46:06,604 INFO L87 Difference]: Start difference. First operand 330 states and 518 transitions. Second operand has 33 states, 32 states have (on average 5.34375) internal successors, (171), 31 states have internal predecessors, (171), 10 states have call successors, (148), 6 states have call predecessors, (148), 12 states have return successors, (148), 10 states have call predecessors, (148), 10 states have call successors, (148) Received shutdown request... [2023-12-16 02:46:07,019 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:46:07,060 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 02:46:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 02:46:07,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 850 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=379, Invalid=953, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 02:46:07,438 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:46:07,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 18 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 02:46:07,439 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:46:07,448 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 02:46:07,647 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 02:46:07,647 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (330states) and FLOYD_HOARE automaton (currently 6 states, 33 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 37 known predicates. [2023-12-16 02:46:07,651 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-16 02:46:07,653 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:46:07,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:46:07 BoogieIcfgContainer [2023-12-16 02:46:07,655 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:46:07,655 INFO L158 Benchmark]: Toolchain (without parser) took 64818.05ms. Allocated memory was 212.9MB in the beginning and 443.5MB in the end (delta: 230.7MB). Free memory was 158.9MB in the beginning and 143.7MB in the end (delta: 15.2MB). Peak memory consumption was 247.4MB. Max. memory is 8.0GB. [2023-12-16 02:46:07,655 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:46:07,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 785.73ms. Allocated memory is still 212.9MB. Free memory was 158.9MB in the beginning and 140.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 02:46:07,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 132.28ms. Allocated memory is still 212.9MB. Free memory was 140.1MB in the beginning and 135.3MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 02:46:07,656 INFO L158 Benchmark]: Boogie Preprocessor took 151.71ms. Allocated memory is still 212.9MB. Free memory was 135.3MB in the beginning and 129.6MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 02:46:07,656 INFO L158 Benchmark]: RCFGBuilder took 806.18ms. Allocated memory is still 212.9MB. Free memory was 129.6MB in the beginning and 164.4MB in the end (delta: -34.8MB). Peak memory consumption was 37.0MB. Max. memory is 8.0GB. [2023-12-16 02:46:07,656 INFO L158 Benchmark]: TraceAbstraction took 62935.20ms. Allocated memory was 212.9MB in the beginning and 443.5MB in the end (delta: 230.7MB). Free memory was 163.3MB in the beginning and 143.7MB in the end (delta: 19.6MB). Peak memory consumption was 250.3MB. Max. memory is 8.0GB. [2023-12-16 02:46:07,658 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 785.73ms. Allocated memory is still 212.9MB. Free memory was 158.9MB in the beginning and 140.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 132.28ms. Allocated memory is still 212.9MB. Free memory was 140.1MB in the beginning and 135.3MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 151.71ms. Allocated memory is still 212.9MB. Free memory was 135.3MB in the beginning and 129.6MB in the end (delta: 5.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 806.18ms. Allocated memory is still 212.9MB. Free memory was 129.6MB in the beginning and 164.4MB in the end (delta: -34.8MB). Peak memory consumption was 37.0MB. Max. memory is 8.0GB. * TraceAbstraction took 62935.20ms. Allocated memory was 212.9MB in the beginning and 443.5MB in the end (delta: 230.7MB). Free memory was 163.3MB in the beginning and 143.7MB in the end (delta: 19.6MB). Peak memory consumption was 250.3MB. 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 constructing difference of abstraction (330states) and FLOYD_HOARE automaton (currently 6 states, 33 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 37 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 163 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.9s, OverallIterations: 5, TraceHistogramMax: 74, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 838 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 834 mSDsluCounter, 2974 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1698 mSDsCounter, 505 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1681 IncrementalHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 505 mSolverCounterUnsat, 1276 mSDtfsCounter, 1681 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3548 GetRequests, 3465 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 27.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=330occurred in iteration=4, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 56.6s InterpolantComputationTime, 2640 NumberOfCodeBlocks, 2640 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 3514 ConstructedInterpolants, 0 QuantifiedInterpolants, 30166 SizeOfPredicates, 24 NumberOfNonLiveVariables, 4765 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 84044/86432 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