/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-98.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:44:00,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:44:00,632 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:44:00,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:44:00,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:44:00,659 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:44:00,660 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:44:00,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:44:00,660 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:44:00,664 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:44:00,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:44:00,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:44:00,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:44:00,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:44:00,665 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:44:00,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:44:00,666 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:44:00,666 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:44:00,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:44:00,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:44:00,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:44:00,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:44:00,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:44:00,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:44:00,668 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:44:00,668 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:44:00,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:44:00,668 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:44:00,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:44:00,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:44:00,670 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:44:00,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:44:00,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:44:00,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:44:00,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:44:00,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:44:00,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:44:00,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:44:00,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:44:00,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:44:00,671 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:44:00,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:44:00,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:44:00,671 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:44:00,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:44:00,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:44:00,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:44:00,881 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:44:00,883 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:44:00,884 INFO L431 ainManager$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-98.i [2023-12-15 19:44:01,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:44:02,281 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:44:02,281 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-98.i [2023-12-15 19:44:02,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e38ca4c70/609abe2a6a6245f59ce98bd6eff39a44/FLAG18a45d9e8 [2023-12-15 19:44:02,297 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e38ca4c70/609abe2a6a6245f59ce98bd6eff39a44 [2023-12-15 19:44:02,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:44:02,300 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:44:02,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:44:02,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:44:02,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:44:02,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bada80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02, skipping insertion in model container [2023-12-15 19:44:02,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,344 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:44:02,458 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-98.i[916,929] [2023-12-15 19:44:02,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:44:02,566 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:44:02,580 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-98.i[916,929] [2023-12-15 19:44:02,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:44:02,644 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:44:02,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02 WrapperNode [2023-12-15 19:44:02,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:44:02,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:44:02,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:44:02,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:44:02,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,704 INFO L138 Inliner]: procedures = 26, calls = 66, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 326 [2023-12-15 19:44:02,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:44:02,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:44:02,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:44:02,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:44:02,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,732 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:44:02,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:44:02,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:44:02,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:44:02,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:44:02,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (1/1) ... [2023-12-15 19:44:02,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:44:02,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:02,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:44:02,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:44:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:44:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:44:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:44:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:44:02,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:44:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:44:02,930 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:44:02,934 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:44:03,305 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:44:03,328 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:44:03,329 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:44:03,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:44:03 BoogieIcfgContainer [2023-12-15 19:44:03,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:44:03,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:44:03,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:44:03,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:44:03,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:44:02" (1/3) ... [2023-12-15 19:44:03,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6047bce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:44:03, skipping insertion in model container [2023-12-15 19:44:03,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:02" (2/3) ... [2023-12-15 19:44:03,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6047bce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:44:03, skipping insertion in model container [2023-12-15 19:44:03,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:44:03" (3/3) ... [2023-12-15 19:44:03,334 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-98.i [2023-12-15 19:44:03,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:44:03,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:44:03,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:44:03,397 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;@1c836ee9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:44:03,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:44:03,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 79 states have internal predecessors, (118), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-15 19:44:03,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-12-15 19:44:03,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:44:03,416 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:44:03,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:44:03,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:44:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash 868305801, now seen corresponding path program 1 times [2023-12-15 19:44:03,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:44:03,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264331351] [2023-12-15 19:44:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:03,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:44:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:03,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:44:03,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264331351] [2023-12-15 19:44:03,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:44:03,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717472208] [2023-12-15 19:44:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:03,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:03,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:03,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:44:03,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:44:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:03,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:44:03,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:44:03,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2023-12-15 19:44:03,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:44:03,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717472208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:44:03,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:44:03,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:44:03,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548910341] [2023-12-15 19:44:03,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:44:03,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:44:03,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:44:03,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:44:03,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:44:03,943 INFO L87 Difference]: Start difference. First operand has 134 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 79 states have internal predecessors, (118), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-15 19:44:04,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:44:04,003 INFO L93 Difference]: Finished difference Result 265 states and 499 transitions. [2023-12-15 19:44:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:44:04,005 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 2 states have call successors, (53) Word has length 324 [2023-12-15 19:44:04,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:44:04,011 INFO L225 Difference]: With dead ends: 265 [2023-12-15 19:44:04,011 INFO L226 Difference]: Without dead ends: 132 [2023-12-15 19:44:04,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:44:04,016 INFO L413 NwaCegarLoop]: 216 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, 216 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:44:04,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:44:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-15 19:44:04,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-12-15 19:44:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 77 states have (on average 1.4675324675324675) internal successors, (113), 77 states have internal predecessors, (113), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-15 19:44:04,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 219 transitions. [2023-12-15 19:44:04,059 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 219 transitions. Word has length 324 [2023-12-15 19:44:04,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:44:04,059 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 219 transitions. [2023-12-15 19:44:04,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 2 states have call successors, (53) [2023-12-15 19:44:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 219 transitions. [2023-12-15 19:44:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-12-15 19:44:04,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:44:04,064 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:44:04,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:44:04,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:44:04,270 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:44:04,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:44:04,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1366673209, now seen corresponding path program 1 times [2023-12-15 19:44:04,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:44:04,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480562191] [2023-12-15 19:44:04,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:04,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:44:04,347 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:44:04,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655598052] [2023-12-15 19:44:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:04,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:04,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:04,367 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:44:04,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:44:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:04,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:44:04,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:44:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2023-12-15 19:44:04,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:44:04,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:44:04,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480562191] [2023-12-15 19:44:04,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:44:04,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655598052] [2023-12-15 19:44:04,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655598052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:44:04,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:44:04,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:44:04,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206996146] [2023-12-15 19:44:04,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:44:04,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:44:04,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:44:04,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:44:04,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:44:04,599 INFO L87 Difference]: Start difference. First operand 132 states and 219 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-15 19:44:04,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:44:04,654 INFO L93 Difference]: Finished difference Result 264 states and 439 transitions. [2023-12-15 19:44:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:44:04,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 324 [2023-12-15 19:44:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:44:04,661 INFO L225 Difference]: With dead ends: 264 [2023-12-15 19:44:04,663 INFO L226 Difference]: Without dead ends: 133 [2023-12-15 19:44:04,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:44:04,665 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:44:04,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:44:04,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-12-15 19:44:04,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2023-12-15 19:44:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 78 states have internal predecessors, (114), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-15 19:44:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 220 transitions. [2023-12-15 19:44:04,688 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 220 transitions. Word has length 324 [2023-12-15 19:44:04,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:44:04,690 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 220 transitions. [2023-12-15 19:44:04,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-15 19:44:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 220 transitions. [2023-12-15 19:44:04,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-15 19:44:04,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:44:04,696 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:44:04,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:44:04,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 19:44:04,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:44:04,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:44:04,903 INFO L85 PathProgramCache]: Analyzing trace with hash -172520805, now seen corresponding path program 1 times [2023-12-15 19:44:04,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:44:04,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263899383] [2023-12-15 19:44:04,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:04,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:44:04,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:44:04,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511815731] [2023-12-15 19:44:04,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:04,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:04,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:04,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:44:04,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:44:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:05,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 19:44:05,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:44:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 1762 proven. 126 refuted. 0 times theorem prover too weak. 3624 trivial. 0 not checked. [2023-12-15 19:44:05,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:44:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2023-12-15 19:44:06,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:44:06,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263899383] [2023-12-15 19:44:06,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:44:06,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511815731] [2023-12-15 19:44:06,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511815731] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:44:06,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:44:06,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-15 19:44:06,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705117955] [2023-12-15 19:44:06,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:44:06,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:44:06,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:44:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:44:06,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 19:44:06,146 INFO L87 Difference]: Start difference. First operand 133 states and 220 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-15 19:44:06,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:44:06,259 INFO L93 Difference]: Finished difference Result 315 states and 514 transitions. [2023-12-15 19:44:06,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:44:06,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 325 [2023-12-15 19:44:06,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:44:06,261 INFO L225 Difference]: With dead ends: 315 [2023-12-15 19:44:06,262 INFO L226 Difference]: Without dead ends: 183 [2023-12-15 19:44:06,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 19:44:06,263 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 113 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:44:06,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 418 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:44:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-15 19:44:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 164. [2023-12-15 19:44:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 98 states have (on average 1.4285714285714286) internal successors, (140), 99 states have internal predecessors, (140), 63 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-15 19:44:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 266 transitions. [2023-12-15 19:44:06,277 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 266 transitions. Word has length 325 [2023-12-15 19:44:06,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:44:06,278 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 266 transitions. [2023-12-15 19:44:06,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-15 19:44:06,278 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 266 transitions. [2023-12-15 19:44:06,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-15 19:44:06,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:44:06,280 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:44:06,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:44:06,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:06,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:44:06,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:44:06,487 INFO L85 PathProgramCache]: Analyzing trace with hash -981867431, now seen corresponding path program 1 times [2023-12-15 19:44:06,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:44:06,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551871617] [2023-12-15 19:44:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:06,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:44:06,511 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:44:06,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336754793] [2023-12-15 19:44:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:06,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:06,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:06,513 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:44:06,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:44:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:06,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:44:06,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:44:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2023-12-15 19:44:06,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:44:06,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:44:06,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551871617] [2023-12-15 19:44:06,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:44:06,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336754793] [2023-12-15 19:44:06,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336754793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:44:06,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:44:06,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:44:06,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707835687] [2023-12-15 19:44:06,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:44:06,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:44:06,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:44:06,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:44:06,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:44:06,742 INFO L87 Difference]: Start difference. First operand 164 states and 266 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-15 19:44:06,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:44:06,773 INFO L93 Difference]: Finished difference Result 323 states and 525 transitions. [2023-12-15 19:44:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:44:06,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 325 [2023-12-15 19:44:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:44:06,776 INFO L225 Difference]: With dead ends: 323 [2023-12-15 19:44:06,776 INFO L226 Difference]: Without dead ends: 160 [2023-12-15 19:44:06,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:44:06,777 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 19 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:44:06,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 393 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:44:06,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-15 19:44:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-12-15 19:44:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 95 states have internal predecessors, (133), 63 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-15 19:44:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 259 transitions. [2023-12-15 19:44:06,788 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 259 transitions. Word has length 325 [2023-12-15 19:44:06,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:44:06,789 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 259 transitions. [2023-12-15 19:44:06,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-15 19:44:06,789 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 259 transitions. [2023-12-15 19:44:06,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-15 19:44:06,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:44:06,791 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:44:06,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 19:44:06,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:06,998 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:44:06,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:44:06,999 INFO L85 PathProgramCache]: Analyzing trace with hash 528543773, now seen corresponding path program 1 times [2023-12-15 19:44:06,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:44:06,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870922607] [2023-12-15 19:44:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:06,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:44:07,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:44:07,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220073974] [2023-12-15 19:44:07,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:07,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:07,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:07,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:44:07,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:44:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:07,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 19:44:07,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:44:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2023-12-15 19:44:07,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:44:07,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:44:07,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870922607] [2023-12-15 19:44:07,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:44:07,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220073974] [2023-12-15 19:44:07,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220073974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:44:07,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:44:07,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 19:44:07,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738939793] [2023-12-15 19:44:07,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:44:07,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:44:07,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:44:07,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:44:07,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:44:07,506 INFO L87 Difference]: Start difference. First operand 160 states and 259 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-15 19:44:08,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:44:08,925 INFO L93 Difference]: Finished difference Result 803 states and 1305 transitions. [2023-12-15 19:44:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 19:44:08,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 325 [2023-12-15 19:44:08,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:44:08,929 INFO L225 Difference]: With dead ends: 803 [2023-12-15 19:44:08,929 INFO L226 Difference]: Without dead ends: 644 [2023-12-15 19:44:08,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:44:08,930 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 763 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:44:08,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1827 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:44:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2023-12-15 19:44:09,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 627. [2023-12-15 19:44:09,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 366 states have (on average 1.4098360655737705) internal successors, (516), 370 states have internal predecessors, (516), 252 states have call successors, (252), 8 states have call predecessors, (252), 8 states have return successors, (252), 248 states have call predecessors, (252), 252 states have call successors, (252) [2023-12-15 19:44:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1020 transitions. [2023-12-15 19:44:09,009 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1020 transitions. Word has length 325 [2023-12-15 19:44:09,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:44:09,009 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 1020 transitions. [2023-12-15 19:44:09,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2023-12-15 19:44:09,009 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1020 transitions. [2023-12-15 19:44:09,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-12-15 19:44:09,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:44:09,011 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:44:09,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:44:09,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:09,216 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:44:09,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:44:09,217 INFO L85 PathProgramCache]: Analyzing trace with hash 585802075, now seen corresponding path program 1 times [2023-12-15 19:44:09,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:44:09,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000849959] [2023-12-15 19:44:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:09,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:44:09,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:44:09,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885035482] [2023-12-15 19:44:09,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:09,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:09,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:09,252 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:44:09,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:44:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:09,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-15 19:44:09,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 19:44:57,852 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:44:57,853 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:44:58,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:44:58,907 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 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown