/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_fillercodestructure_filler-pr-co_file-81.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 09:33:47,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 09:33:47,449 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 09:33:47,455 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 09:33:47,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 09:33:47,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 09:33:47,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 09:33:47,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 09:33:47,485 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 09:33:47,489 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 09:33:47,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 09:33:47,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 09:33:47,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 09:33:47,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 09:33:47,491 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 09:33:47,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 09:33:47,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 09:33:47,492 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 09:33:47,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 09:33:47,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 09:33:47,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 09:33:47,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 09:33:47,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 09:33:47,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 09:33:47,495 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 09:33:47,495 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 09:33:47,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 09:33:47,495 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 09:33:47,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 09:33:47,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 09:33:47,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 09:33:47,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 09:33:47,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 09:33:47,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 09:33:47,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 09:33:47,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 09:33:47,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 09:33:47,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 09:33:47,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 09:33:47,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 09:33:47,498 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 09:33:47,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 09:33:47,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 09:33:47,499 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 09:33:47,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 09:33:47,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 09:33:47,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 09:33:47,723 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 09:33:47,724 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 09:33:47,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i [2023-12-19 09:33:49,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 09:33:49,268 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 09:33:49,269 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i [2023-12-19 09:33:49,280 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89eada254/b994dc56db1d40e6b87a37ce2ffad941/FLAGb79d6cd3e [2023-12-19 09:33:49,296 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89eada254/b994dc56db1d40e6b87a37ce2ffad941 [2023-12-19 09:33:49,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 09:33:49,300 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 09:33:49,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 09:33:49,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 09:33:49,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 09:33:49,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6077ee51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49, skipping insertion in model container [2023-12-19 09:33:49,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 09:33:49,499 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_fillercodestructure_filler-pr-co_file-81.i[919,932] [2023-12-19 09:33:49,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 09:33:49,625 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 09:33:49,636 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_fillercodestructure_filler-pr-co_file-81.i[919,932] [2023-12-19 09:33:49,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 09:33:49,682 INFO L206 MainTranslator]: Completed translation [2023-12-19 09:33:49,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49 WrapperNode [2023-12-19 09:33:49,683 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 09:33:49,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 09:33:49,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 09:33:49,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 09:33:49,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,763 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 303 [2023-12-19 09:33:49,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 09:33:49,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 09:33:49,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 09:33:49,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 09:33:49,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,790 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,817 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 09:33:49,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 09:33:49,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 09:33:49,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 09:33:49,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 09:33:49,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (1/1) ... [2023-12-19 09:33:49,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 09:33:49,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:33:49,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 09:33:49,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 09:33:49,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 09:33:49,925 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 09:33:49,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 09:33:49,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 09:33:49,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 09:33:49,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 09:33:50,044 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 09:33:50,047 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 09:33:50,575 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 09:33:50,660 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 09:33:50,660 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 09:33:50,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:33:50 BoogieIcfgContainer [2023-12-19 09:33:50,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 09:33:50,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 09:33:50,663 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 09:33:50,666 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 09:33:50,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 09:33:49" (1/3) ... [2023-12-19 09:33:50,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb584f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:33:50, skipping insertion in model container [2023-12-19 09:33:50,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 09:33:49" (2/3) ... [2023-12-19 09:33:50,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb584f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 09:33:50, skipping insertion in model container [2023-12-19 09:33:50,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 09:33:50" (3/3) ... [2023-12-19 09:33:50,670 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-81.i [2023-12-19 09:33:50,722 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 09:33:50,723 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 09:33:50,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 09:33:50,781 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;@1d5408c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 09:33:50,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 09:33:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 71 states have internal predecessors, (104), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-19 09:33:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-19 09:33:50,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:33:50,809 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:33:50,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:33:50,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:33:50,814 INFO L85 PathProgramCache]: Analyzing trace with hash 351485688, now seen corresponding path program 1 times [2023-12-19 09:33:50,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:33:50,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277981955] [2023-12-19 09:33:50,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:33:50,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:33:51,067 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:33:51,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832607096] [2023-12-19 09:33:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:33:51,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:33:51,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:33:51,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:33:51,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 09:33:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:33:51,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 09:33:51,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:33:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1547 proven. 111 refuted. 0 times theorem prover too weak. 2854 trivial. 0 not checked. [2023-12-19 09:33:51,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:33:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 30 proven. 111 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-12-19 09:33:52,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:33:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277981955] [2023-12-19 09:33:52,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:33:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832607096] [2023-12-19 09:33:52,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832607096] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:33:52,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:33:52,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 09:33:52,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012297577] [2023-12-19 09:33:52,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:33:52,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 09:33:52,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:33:52,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 09:33:52,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-19 09:33:52,304 INFO L87 Difference]: Start difference. First operand has 121 states, 70 states have (on average 1.4857142857142858) internal successors, (104), 71 states have internal predecessors, (104), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 3 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2023-12-19 09:33:52,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:33:52,892 INFO L93 Difference]: Finished difference Result 297 states and 550 transitions. [2023-12-19 09:33:52,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 09:33:52,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 3 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) Word has length 291 [2023-12-19 09:33:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:33:52,905 INFO L225 Difference]: With dead ends: 297 [2023-12-19 09:33:52,905 INFO L226 Difference]: Without dead ends: 177 [2023-12-19 09:33:52,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2023-12-19 09:33:52,913 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 306 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 09:33:52,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 390 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 09:33:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-19 09:33:52,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 170. [2023-12-19 09:33:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 108 states have (on average 1.4444444444444444) internal successors, (156), 109 states have internal predecessors, (156), 58 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-19 09:33:52,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 272 transitions. [2023-12-19 09:33:52,976 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 272 transitions. Word has length 291 [2023-12-19 09:33:52,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:33:52,977 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 272 transitions. [2023-12-19 09:33:52,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 3 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2023-12-19 09:33:52,978 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 272 transitions. [2023-12-19 09:33:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-12-19 09:33:52,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:33:52,984 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:33:52,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 09:33:53,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 09:33:53,185 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:33:53,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:33:53,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1369011136, now seen corresponding path program 1 times [2023-12-19 09:33:53,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:33:53,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743965873] [2023-12-19 09:33:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:33:53,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:33:53,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:33:53,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584250290] [2023-12-19 09:33:53,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:33:53,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:33:53,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:33:53,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:33:53,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 09:33:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:33:53,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 09:33:53,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:33:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1446 proven. 249 refuted. 0 times theorem prover too weak. 2817 trivial. 0 not checked. [2023-12-19 09:33:54,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:33:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 27 proven. 252 refuted. 0 times theorem prover too weak. 4233 trivial. 0 not checked. [2023-12-19 09:33:55,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:33:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743965873] [2023-12-19 09:33:55,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:33:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584250290] [2023-12-19 09:33:55,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584250290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:33:55,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:33:55,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-19 09:33:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296018528] [2023-12-19 09:33:55,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:33:55,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 09:33:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:33:55,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 09:33:55,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-19 09:33:55,015 INFO L87 Difference]: Start difference. First operand 170 states and 272 transitions. Second operand has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 5 states have call successors, (95), 3 states have call predecessors, (95), 7 states have return successors, (96), 4 states have call predecessors, (96), 5 states have call successors, (96) [2023-12-19 09:33:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:33:55,971 INFO L93 Difference]: Finished difference Result 442 states and 690 transitions. [2023-12-19 09:33:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 09:33:55,972 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 5 states have call successors, (95), 3 states have call predecessors, (95), 7 states have return successors, (96), 4 states have call predecessors, (96), 5 states have call successors, (96) Word has length 292 [2023-12-19 09:33:55,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:33:55,980 INFO L225 Difference]: With dead ends: 442 [2023-12-19 09:33:55,981 INFO L226 Difference]: Without dead ends: 273 [2023-12-19 09:33:55,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=356, Invalid=834, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 09:33:55,986 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 960 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 09:33:55,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 459 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 09:33:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-19 09:33:56,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 160. [2023-12-19 09:33:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.4766355140186915) internal successors, (158), 107 states have internal predecessors, (158), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-19 09:33:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 254 transitions. [2023-12-19 09:33:56,038 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 254 transitions. Word has length 292 [2023-12-19 09:33:56,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:33:56,039 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 254 transitions. [2023-12-19 09:33:56,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 5 states have call successors, (95), 3 states have call predecessors, (95), 7 states have return successors, (96), 4 states have call predecessors, (96), 5 states have call successors, (96) [2023-12-19 09:33:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 254 transitions. [2023-12-19 09:33:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-12-19 09:33:56,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:33:56,045 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:33:56,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 09:33:56,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 09:33:56,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:33:56,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:33:56,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1964697537, now seen corresponding path program 1 times [2023-12-19 09:33:56,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:33:56,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329039245] [2023-12-19 09:33:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:33:56,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:33:56,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:33:56,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779288098] [2023-12-19 09:33:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:33:56,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:33:56,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:33:56,332 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:33:56,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 09:33:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:33:56,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 09:33:56,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:33:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1311 proven. 117 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2023-12-19 09:33:56,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:33:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-12-19 09:33:57,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:33:57,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329039245] [2023-12-19 09:33:57,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:33:57,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779288098] [2023-12-19 09:33:57,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779288098] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:33:57,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:33:57,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-19 09:33:57,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309884494] [2023-12-19 09:33:57,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:33:57,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 09:33:57,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:33:57,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 09:33:57,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-12-19 09:33:57,347 INFO L87 Difference]: Start difference. First operand 160 states and 254 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 3 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2023-12-19 09:33:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:33:59,907 INFO L93 Difference]: Finished difference Result 877 states and 1387 transitions. [2023-12-19 09:33:59,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 09:33:59,908 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 3 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) Word has length 292 [2023-12-19 09:33:59,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:33:59,913 INFO L225 Difference]: With dead ends: 877 [2023-12-19 09:33:59,913 INFO L226 Difference]: Without dead ends: 718 [2023-12-19 09:33:59,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=950, Invalid=3472, Unknown=0, NotChecked=0, Total=4422 [2023-12-19 09:33:59,916 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1343 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 2733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 09:33:59,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 1338 Invalid, 2733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 09:33:59,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-12-19 09:33:59,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 313. [2023-12-19 09:33:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 235 states have (on average 1.5063829787234042) internal successors, (354), 237 states have internal predecessors, (354), 66 states have call successors, (66), 11 states have call predecessors, (66), 11 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-19 09:33:59,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 486 transitions. [2023-12-19 09:33:59,955 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 486 transitions. Word has length 292 [2023-12-19 09:33:59,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:33:59,956 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 486 transitions. [2023-12-19 09:33:59,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 3 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2023-12-19 09:33:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 486 transitions. [2023-12-19 09:33:59,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 09:33:59,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:33:59,960 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:33:59,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 09:34:00,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:00,169 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:34:00,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:34:00,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1877762821, now seen corresponding path program 1 times [2023-12-19 09:34:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:34:00,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322596834] [2023-12-19 09:34:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:00,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:34:00,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:34:00,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816714836] [2023-12-19 09:34:00,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:00,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:00,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:34:00,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:34:00,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 09:34:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:34:00,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 09:34:00,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:34:00,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 09:34:00,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:34:00,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:34:00,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322596834] [2023-12-19 09:34:00,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:34:00,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816714836] [2023-12-19 09:34:00,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816714836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:34:00,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:34:00,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 09:34:00,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013679282] [2023-12-19 09:34:00,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:34:00,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 09:34:00,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:34:00,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 09:34:00,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 09:34:00,413 INFO L87 Difference]: Start difference. First operand 313 states and 486 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:34:00,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:34:00,467 INFO L93 Difference]: Finished difference Result 780 states and 1200 transitions. [2023-12-19 09:34:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 09:34:00,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 293 [2023-12-19 09:34:00,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:34:00,472 INFO L225 Difference]: With dead ends: 780 [2023-12-19 09:34:00,473 INFO L226 Difference]: Without dead ends: 468 [2023-12-19 09:34:00,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 09:34:00,474 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 39 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:34:00,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 379 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 09:34:00,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-19 09:34:00,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 463. [2023-12-19 09:34:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 367 states have (on average 1.4959128065395095) internal successors, (549), 372 states have internal predecessors, (549), 78 states have call successors, (78), 17 states have call predecessors, (78), 17 states have return successors, (78), 73 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 09:34:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 705 transitions. [2023-12-19 09:34:00,519 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 705 transitions. Word has length 293 [2023-12-19 09:34:00,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:34:00,522 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 705 transitions. [2023-12-19 09:34:00,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:34:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 705 transitions. [2023-12-19 09:34:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 09:34:00,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:34:00,527 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:34:00,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 09:34:00,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:00,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:34:00,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:34:00,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1820504519, now seen corresponding path program 1 times [2023-12-19 09:34:00,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:34:00,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536536786] [2023-12-19 09:34:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:00,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:34:00,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:34:00,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888286688] [2023-12-19 09:34:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:00,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:00,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:34:00,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:34:00,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 09:34:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:34:00,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 09:34:00,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:34:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 47 proven. 141 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2023-12-19 09:34:01,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:34:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-12-19 09:34:02,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:34:02,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536536786] [2023-12-19 09:34:02,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:34:02,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888286688] [2023-12-19 09:34:02,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888286688] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:34:02,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:34:02,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 09:34:02,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673116969] [2023-12-19 09:34:02,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:34:02,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 09:34:02,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:34:02,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 09:34:02,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-12-19 09:34:02,208 INFO L87 Difference]: Start difference. First operand 463 states and 705 transitions. Second operand has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) [2023-12-19 09:34:04,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:34:04,107 INFO L93 Difference]: Finished difference Result 1609 states and 2439 transitions. [2023-12-19 09:34:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 09:34:04,113 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) Word has length 293 [2023-12-19 09:34:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:34:04,129 INFO L225 Difference]: With dead ends: 1609 [2023-12-19 09:34:04,129 INFO L226 Difference]: Without dead ends: 1147 [2023-12-19 09:34:04,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=1347, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 09:34:04,135 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 1786 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 09:34:04,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 1127 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 09:34:04,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2023-12-19 09:34:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 711. [2023-12-19 09:34:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 542 states have (on average 1.4686346863468636) internal successors, (796), 549 states have internal predecessors, (796), 140 states have call successors, (140), 28 states have call predecessors, (140), 28 states have return successors, (140), 133 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-19 09:34:04,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1076 transitions. [2023-12-19 09:34:04,247 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1076 transitions. Word has length 293 [2023-12-19 09:34:04,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:34:04,248 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1076 transitions. [2023-12-19 09:34:04,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) [2023-12-19 09:34:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1076 transitions. [2023-12-19 09:34:04,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 09:34:04,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:34:04,252 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:34:04,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 09:34:04,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:04,453 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:34:04,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:34:04,454 INFO L85 PathProgramCache]: Analyzing trace with hash -131560777, now seen corresponding path program 1 times [2023-12-19 09:34:04,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:34:04,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162431905] [2023-12-19 09:34:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:04,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:34:04,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:34:04,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22424195] [2023-12-19 09:34:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:04,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:04,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:34:04,494 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:34:04,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 09:34:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:34:04,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 09:34:04,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:34:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 47 proven. 141 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2023-12-19 09:34:05,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:34:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-12-19 09:34:06,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:34:06,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162431905] [2023-12-19 09:34:06,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:34:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22424195] [2023-12-19 09:34:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22424195] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:34:06,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:34:06,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-19 09:34:06,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379129440] [2023-12-19 09:34:06,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:34:06,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 09:34:06,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:34:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 09:34:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-19 09:34:06,025 INFO L87 Difference]: Start difference. First operand 711 states and 1076 transitions. Second operand has 16 states, 15 states have (on average 6.466666666666667) internal successors, (97), 16 states have internal predecessors, (97), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) [2023-12-19 09:34:07,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:34:07,729 INFO L93 Difference]: Finished difference Result 1504 states and 2286 transitions. [2023-12-19 09:34:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 09:34:07,730 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.466666666666667) internal successors, (97), 16 states have internal predecessors, (97), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) Word has length 293 [2023-12-19 09:34:07,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:34:07,737 INFO L225 Difference]: With dead ends: 1504 [2023-12-19 09:34:07,738 INFO L226 Difference]: Without dead ends: 1036 [2023-12-19 09:34:07,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=370, Invalid=962, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 09:34:07,741 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 1226 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 09:34:07,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 791 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 09:34:07,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2023-12-19 09:34:07,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 245. [2023-12-19 09:34:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 171 states have (on average 1.3976608187134503) internal successors, (239), 173 states have internal predecessors, (239), 62 states have call successors, (62), 11 states have call predecessors, (62), 11 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-19 09:34:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 363 transitions. [2023-12-19 09:34:07,816 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 363 transitions. Word has length 293 [2023-12-19 09:34:07,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:34:07,818 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 363 transitions. [2023-12-19 09:34:07,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.466666666666667) internal successors, (97), 16 states have internal predecessors, (97), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) [2023-12-19 09:34:07,818 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 363 transitions. [2023-12-19 09:34:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 09:34:07,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:34:07,820 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:34:07,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 09:34:08,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:08,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:34:08,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:34:08,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1601649801, now seen corresponding path program 1 times [2023-12-19 09:34:08,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:34:08,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291742453] [2023-12-19 09:34:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:08,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:34:08,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:34:08,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565300948] [2023-12-19 09:34:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:08,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:08,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:34:08,069 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:34:08,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 09:34:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:34:08,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 09:34:08,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:34:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 96 proven. 276 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2023-12-19 09:34:09,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:34:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 4233 trivial. 0 not checked. [2023-12-19 09:34:10,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:34:10,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291742453] [2023-12-19 09:34:10,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:34:10,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565300948] [2023-12-19 09:34:10,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565300948] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:34:10,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:34:10,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 09:34:10,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812000095] [2023-12-19 09:34:10,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:34:10,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 09:34:10,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:34:10,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 09:34:10,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-19 09:34:10,135 INFO L87 Difference]: Start difference. First operand 245 states and 363 transitions. Second operand has 18 states, 17 states have (on average 6.705882352941177) internal successors, (114), 16 states have internal predecessors, (114), 6 states have call successors, (96), 4 states have call predecessors, (96), 6 states have return successors, (96), 4 states have call predecessors, (96), 6 states have call successors, (96) [2023-12-19 09:34:12,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:34:12,705 INFO L93 Difference]: Finished difference Result 1547 states and 2306 transitions. [2023-12-19 09:34:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-19 09:34:12,706 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.705882352941177) internal successors, (114), 16 states have internal predecessors, (114), 6 states have call successors, (96), 4 states have call predecessors, (96), 6 states have return successors, (96), 4 states have call predecessors, (96), 6 states have call successors, (96) Word has length 293 [2023-12-19 09:34:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:34:12,712 INFO L225 Difference]: With dead ends: 1547 [2023-12-19 09:34:12,713 INFO L226 Difference]: Without dead ends: 1334 [2023-12-19 09:34:12,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=833, Invalid=1923, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 09:34:12,715 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 1000 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 09:34:12,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1296 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 09:34:12,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2023-12-19 09:34:12,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 874. [2023-12-19 09:34:12,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 618 states have (on average 1.3883495145631068) internal successors, (858), 623 states have internal predecessors, (858), 218 states have call successors, (218), 37 states have call predecessors, (218), 37 states have return successors, (218), 213 states have call predecessors, (218), 218 states have call successors, (218) [2023-12-19 09:34:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1294 transitions. [2023-12-19 09:34:12,898 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1294 transitions. Word has length 293 [2023-12-19 09:34:12,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:34:12,898 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1294 transitions. [2023-12-19 09:34:12,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.705882352941177) internal successors, (114), 16 states have internal predecessors, (114), 6 states have call successors, (96), 4 states have call predecessors, (96), 6 states have return successors, (96), 4 states have call predecessors, (96), 6 states have call successors, (96) [2023-12-19 09:34:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1294 transitions. [2023-12-19 09:34:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 09:34:12,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:34:12,901 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:34:12,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 09:34:13,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:13,109 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:34:13,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:34:13,110 INFO L85 PathProgramCache]: Analyzing trace with hash 699172789, now seen corresponding path program 1 times [2023-12-19 09:34:13,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:34:13,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455871375] [2023-12-19 09:34:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:13,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:34:13,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:34:13,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329814680] [2023-12-19 09:34:13,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:13,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:13,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:34:13,141 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:34:13,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 09:34:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:34:13,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 09:34:13,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:34:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 47 proven. 141 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2023-12-19 09:34:14,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:34:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-12-19 09:34:15,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:34:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455871375] [2023-12-19 09:34:15,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:34:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329814680] [2023-12-19 09:34:15,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329814680] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:34:15,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:34:15,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 09:34:15,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828982771] [2023-12-19 09:34:15,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:34:15,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 09:34:15,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:34:15,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 09:34:15,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-12-19 09:34:15,129 INFO L87 Difference]: Start difference. First operand 874 states and 1294 transitions. Second operand has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) [2023-12-19 09:34:16,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:34:16,594 INFO L93 Difference]: Finished difference Result 1759 states and 2647 transitions. [2023-12-19 09:34:16,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 09:34:16,595 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) Word has length 293 [2023-12-19 09:34:16,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:34:16,599 INFO L225 Difference]: With dead ends: 1759 [2023-12-19 09:34:16,600 INFO L226 Difference]: Without dead ends: 921 [2023-12-19 09:34:16,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 09:34:16,603 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 913 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 09:34:16,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 1047 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 09:34:16,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-12-19 09:34:16,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 536. [2023-12-19 09:34:16,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 362 states have (on average 1.3646408839779005) internal successors, (494), 364 states have internal predecessors, (494), 152 states have call successors, (152), 21 states have call predecessors, (152), 21 states have return successors, (152), 150 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-19 09:34:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 798 transitions. [2023-12-19 09:34:16,798 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 798 transitions. Word has length 293 [2023-12-19 09:34:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:34:16,798 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 798 transitions. [2023-12-19 09:34:16,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) [2023-12-19 09:34:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 798 transitions. [2023-12-19 09:34:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 09:34:16,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:34:16,801 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:34:16,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 09:34:17,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 09:34:17,010 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:34:17,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:34:17,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1906850765, now seen corresponding path program 1 times [2023-12-19 09:34:17,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:34:17,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582913401] [2023-12-19 09:34:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:17,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:34:17,044 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:34:17,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864624753] [2023-12-19 09:34:17,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:17,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:17,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:34:17,048 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:34:17,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 09:34:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:34:17,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-19 09:34:17,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:34:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1549 proven. 912 refuted. 0 times theorem prover too weak. 2051 trivial. 0 not checked. [2023-12-19 09:34:44,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:34:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 09:34:51,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:34:51,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582913401] [2023-12-19 09:34:51,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:34:51,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864624753] [2023-12-19 09:34:51,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864624753] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 09:34:51,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 09:34:51,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [37] total 44 [2023-12-19 09:34:51,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222182601] [2023-12-19 09:34:51,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:34:51,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 09:34:51,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:34:51,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 09:34:51,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1493, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 09:34:51,591 INFO L87 Difference]: Start difference. First operand 536 states and 798 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:34:53,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:34:53,340 INFO L93 Difference]: Finished difference Result 1233 states and 1832 transitions. [2023-12-19 09:34:53,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 09:34:53,341 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 293 [2023-12-19 09:34:53,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:34:53,345 INFO L225 Difference]: With dead ends: 1233 [2023-12-19 09:34:53,345 INFO L226 Difference]: Without dead ends: 821 [2023-12-19 09:34:53,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=453, Invalid=1997, Unknown=0, NotChecked=0, Total=2450 [2023-12-19 09:34:53,347 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 329 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 09:34:53,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 883 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 09:34:53,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2023-12-19 09:34:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 600. [2023-12-19 09:34:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 426 states have (on average 1.4014084507042253) internal successors, (597), 428 states have internal predecessors, (597), 152 states have call successors, (152), 21 states have call predecessors, (152), 21 states have return successors, (152), 150 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-19 09:34:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 901 transitions. [2023-12-19 09:34:53,499 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 901 transitions. Word has length 293 [2023-12-19 09:34:53,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:34:53,500 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 901 transitions. [2023-12-19 09:34:53,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:34:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 901 transitions. [2023-12-19 09:34:53,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 09:34:53,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:34:53,502 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:34:53,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 09:34:53,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:53,711 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:34:53,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:34:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1050994551, now seen corresponding path program 1 times [2023-12-19 09:34:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:34:53,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423967679] [2023-12-19 09:34:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:53,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:34:53,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:34:53,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988855022] [2023-12-19 09:34:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:53,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:53,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:34:53,738 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:34:53,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 09:34:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:34:53,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 09:34:53,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:34:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 09:34:53,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:34:53,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:34:53,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423967679] [2023-12-19 09:34:53,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:34:53,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988855022] [2023-12-19 09:34:53,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988855022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:34:53,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:34:53,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 09:34:53,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528949194] [2023-12-19 09:34:53,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:34:53,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 09:34:53,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:34:53,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 09:34:53,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 09:34:53,927 INFO L87 Difference]: Start difference. First operand 600 states and 901 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:34:54,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:34:54,168 INFO L93 Difference]: Finished difference Result 1081 states and 1634 transitions. [2023-12-19 09:34:54,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 09:34:54,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 293 [2023-12-19 09:34:54,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:34:54,172 INFO L225 Difference]: With dead ends: 1081 [2023-12-19 09:34:54,172 INFO L226 Difference]: Without dead ends: 614 [2023-12-19 09:34:54,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:34:54,174 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 160 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 09:34:54,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 505 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 09:34:54,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-12-19 09:34:54,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 610. [2023-12-19 09:34:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 436 states have (on average 1.4059633027522935) internal successors, (613), 438 states have internal predecessors, (613), 152 states have call successors, (152), 21 states have call predecessors, (152), 21 states have return successors, (152), 150 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-19 09:34:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 917 transitions. [2023-12-19 09:34:54,321 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 917 transitions. Word has length 293 [2023-12-19 09:34:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:34:54,321 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 917 transitions. [2023-12-19 09:34:54,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:34:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 917 transitions. [2023-12-19 09:34:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 09:34:54,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:34:54,325 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:34:54,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 09:34:54,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 09:34:54,532 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:34:54,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:34:54,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1189247226, now seen corresponding path program 1 times [2023-12-19 09:34:54,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:34:54,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724224221] [2023-12-19 09:34:54,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:54,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:34:54,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:34:54,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497458159] [2023-12-19 09:34:54,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:54,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:54,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:34:54,569 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:34:54,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 09:34:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:34:54,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 09:34:54,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:34:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 233 proven. 138 refuted. 0 times theorem prover too weak. 4141 trivial. 0 not checked. [2023-12-19 09:34:55,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:34:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 09:34:55,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:34:55,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724224221] [2023-12-19 09:34:55,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:34:55,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497458159] [2023-12-19 09:34:55,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497458159] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 09:34:55,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 09:34:55,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2023-12-19 09:34:55,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581507739] [2023-12-19 09:34:55,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:34:55,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 09:34:55,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:34:55,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 09:34:55,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-19 09:34:55,547 INFO L87 Difference]: Start difference. First operand 610 states and 917 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:34:55,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:34:55,767 INFO L93 Difference]: Finished difference Result 879 states and 1324 transitions. [2023-12-19 09:34:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 09:34:55,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 294 [2023-12-19 09:34:55,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:34:55,770 INFO L225 Difference]: With dead ends: 879 [2023-12-19 09:34:55,770 INFO L226 Difference]: Without dead ends: 622 [2023-12-19 09:34:55,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 577 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-19 09:34:55,772 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 180 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 09:34:55,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 558 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 09:34:55,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-12-19 09:34:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 615. [2023-12-19 09:34:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 441 states have (on average 1.3786848072562359) internal successors, (608), 443 states have internal predecessors, (608), 152 states have call successors, (152), 21 states have call predecessors, (152), 21 states have return successors, (152), 150 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-19 09:34:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 912 transitions. [2023-12-19 09:34:55,907 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 912 transitions. Word has length 294 [2023-12-19 09:34:55,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:34:55,908 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 912 transitions. [2023-12-19 09:34:55,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:34:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 912 transitions. [2023-12-19 09:34:55,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 09:34:55,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:34:55,911 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:34:55,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 09:34:56,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 09:34:56,120 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:34:56,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:34:56,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1974366427, now seen corresponding path program 1 times [2023-12-19 09:34:56,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:34:56,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112835809] [2023-12-19 09:34:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:56,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:34:56,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:34:56,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789044943] [2023-12-19 09:34:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:34:56,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:34:56,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:34:56,146 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:34:56,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 09:34:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:34:56,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 09:34:56,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:35:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 96 proven. 276 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2023-12-19 09:35:11,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:35:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 09:35:17,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:35:17,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112835809] [2023-12-19 09:35:17,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:35:17,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789044943] [2023-12-19 09:35:17,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789044943] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 09:35:17,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 09:35:17,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 25 [2023-12-19 09:35:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723189452] [2023-12-19 09:35:17,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:35:17,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 09:35:17,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:35:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 09:35:17,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2023-12-19 09:35:17,436 INFO L87 Difference]: Start difference. First operand 615 states and 912 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:35:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:35:18,676 INFO L93 Difference]: Finished difference Result 1276 states and 1885 transitions. [2023-12-19 09:35:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 09:35:18,677 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 294 [2023-12-19 09:35:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:35:18,681 INFO L225 Difference]: With dead ends: 1276 [2023-12-19 09:35:18,681 INFO L226 Difference]: Without dead ends: 794 [2023-12-19 09:35:18,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2023-12-19 09:35:18,683 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 402 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 09:35:18,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 829 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 09:35:18,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-12-19 09:35:18,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 637. [2023-12-19 09:35:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 463 states have (on average 1.3930885529157668) internal successors, (645), 465 states have internal predecessors, (645), 152 states have call successors, (152), 21 states have call predecessors, (152), 21 states have return successors, (152), 150 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-19 09:35:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 949 transitions. [2023-12-19 09:35:18,833 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 949 transitions. Word has length 294 [2023-12-19 09:35:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:35:18,833 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 949 transitions. [2023-12-19 09:35:18,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:35:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 949 transitions. [2023-12-19 09:35:18,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 09:35:18,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:35:18,835 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:35:18,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 09:35:19,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 09:35:19,043 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:35:19,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:35:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash 637244447, now seen corresponding path program 1 times [2023-12-19 09:35:19,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:35:19,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965357163] [2023-12-19 09:35:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:35:19,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:35:19,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:35:19,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154928204] [2023-12-19 09:35:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:35:19,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:35:19,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:35:19,085 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:35:19,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 09:35:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:35:19,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 09:35:19,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:35:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 47 proven. 141 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2023-12-19 09:35:19,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:35:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-12-19 09:35:20,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:35:20,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965357163] [2023-12-19 09:35:20,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:35:20,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154928204] [2023-12-19 09:35:20,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154928204] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 09:35:20,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 09:35:20,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-12-19 09:35:20,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521398290] [2023-12-19 09:35:20,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 09:35:20,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 09:35:20,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:35:20,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 09:35:20,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-12-19 09:35:20,305 INFO L87 Difference]: Start difference. First operand 637 states and 949 transitions. Second operand has 15 states, 14 states have (on average 6.857142857142857) internal successors, (96), 15 states have internal predecessors, (96), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) [2023-12-19 09:35:21,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:35:21,573 INFO L93 Difference]: Finished difference Result 1447 states and 2148 transitions. [2023-12-19 09:35:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 09:35:21,576 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.857142857142857) internal successors, (96), 15 states have internal predecessors, (96), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) Word has length 294 [2023-12-19 09:35:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:35:21,580 INFO L225 Difference]: With dead ends: 1447 [2023-12-19 09:35:21,580 INFO L226 Difference]: Without dead ends: 947 [2023-12-19 09:35:21,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 575 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2023-12-19 09:35:21,582 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1117 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 09:35:21,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1062 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 09:35:21,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2023-12-19 09:35:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 628. [2023-12-19 09:35:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 454 states have (on average 1.3898678414096917) internal successors, (631), 456 states have internal predecessors, (631), 152 states have call successors, (152), 21 states have call predecessors, (152), 21 states have return successors, (152), 150 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-19 09:35:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 935 transitions. [2023-12-19 09:35:21,740 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 935 transitions. Word has length 294 [2023-12-19 09:35:21,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:35:21,741 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 935 transitions. [2023-12-19 09:35:21,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.857142857142857) internal successors, (96), 15 states have internal predecessors, (96), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) [2023-12-19 09:35:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 935 transitions. [2023-12-19 09:35:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 09:35:21,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:35:21,743 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:35:21,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 09:35:21,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 09:35:21,952 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:35:21,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:35:21,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1530961142, now seen corresponding path program 1 times [2023-12-19 09:35:21,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:35:21,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864006378] [2023-12-19 09:35:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:35:21,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:35:21,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:35:21,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364434094] [2023-12-19 09:35:21,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:35:21,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:35:21,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:35:21,997 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:35:22,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 09:35:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:35:22,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 09:35:22,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:35:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 09:35:22,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:35:22,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:35:22,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864006378] [2023-12-19 09:35:22,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:35:22,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364434094] [2023-12-19 09:35:22,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364434094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:35:22,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:35:22,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 09:35:22,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276318898] [2023-12-19 09:35:22,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:35:22,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 09:35:22,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:35:22,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 09:35:22,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 09:35:22,197 INFO L87 Difference]: Start difference. First operand 628 states and 935 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:35:22,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:35:22,426 INFO L93 Difference]: Finished difference Result 1126 states and 1676 transitions. [2023-12-19 09:35:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 09:35:22,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 294 [2023-12-19 09:35:22,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:35:22,429 INFO L225 Difference]: With dead ends: 1126 [2023-12-19 09:35:22,429 INFO L226 Difference]: Without dead ends: 626 [2023-12-19 09:35:22,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 09:35:22,431 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 113 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 09:35:22,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 528 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 09:35:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-12-19 09:35:22,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 578. [2023-12-19 09:35:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 413 states have (on average 1.3849878934624698) internal successors, (572), 413 states have internal predecessors, (572), 144 states have call successors, (144), 20 states have call predecessors, (144), 20 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-19 09:35:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 860 transitions. [2023-12-19 09:35:22,561 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 860 transitions. Word has length 294 [2023-12-19 09:35:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:35:22,562 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 860 transitions. [2023-12-19 09:35:22,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:35:22,562 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 860 transitions. [2023-12-19 09:35:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 09:35:22,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:35:22,564 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:35:22,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 09:35:22,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:35:22,773 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:35:22,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:35:22,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1695630602, now seen corresponding path program 1 times [2023-12-19 09:35:22,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:35:22,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025476498] [2023-12-19 09:35:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:35:22,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:35:22,797 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:35:22,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726053746] [2023-12-19 09:35:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:35:22,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:35:22,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:35:22,799 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:35:22,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 09:35:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:35:23,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 09:35:23,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:35:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 09:35:28,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 09:35:28,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:35:28,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025476498] [2023-12-19 09:35:28,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:35:28,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726053746] [2023-12-19 09:35:28,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726053746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 09:35:28,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 09:35:28,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 09:35:28,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38936998] [2023-12-19 09:35:28,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:35:28,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 09:35:28,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:35:28,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 09:35:28,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-19 09:35:28,429 INFO L87 Difference]: Start difference. First operand 578 states and 860 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:35:29,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:35:29,182 INFO L93 Difference]: Finished difference Result 1209 states and 1802 transitions. [2023-12-19 09:35:29,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 09:35:29,184 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 294 [2023-12-19 09:35:29,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:35:29,188 INFO L225 Difference]: With dead ends: 1209 [2023-12-19 09:35:29,188 INFO L226 Difference]: Without dead ends: 763 [2023-12-19 09:35:29,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-12-19 09:35:29,190 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 258 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 09:35:29,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 974 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 09:35:29,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2023-12-19 09:35:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 648. [2023-12-19 09:35:29,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 483 states have (on average 1.4078674948240166) internal successors, (680), 483 states have internal predecessors, (680), 144 states have call successors, (144), 20 states have call predecessors, (144), 20 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-19 09:35:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 968 transitions. [2023-12-19 09:35:29,327 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 968 transitions. Word has length 294 [2023-12-19 09:35:29,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:35:29,327 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 968 transitions. [2023-12-19 09:35:29,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:35:29,328 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 968 transitions. [2023-12-19 09:35:29,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 09:35:29,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:35:29,330 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:35:29,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 09:35:29,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 09:35:29,538 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:35:29,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:35:29,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1880092628, now seen corresponding path program 1 times [2023-12-19 09:35:29,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:35:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734973815] [2023-12-19 09:35:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:35:29,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:35:29,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:35:29,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850044314] [2023-12-19 09:35:29,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:35:29,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:35:29,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:35:29,560 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:35:29,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 09:35:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:35:30,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-19 09:35:30,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:35:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1447 proven. 303 refuted. 0 times theorem prover too weak. 2762 trivial. 0 not checked. [2023-12-19 09:35:50,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:35:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 09:35:56,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:35:56,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734973815] [2023-12-19 09:35:56,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:35:56,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850044314] [2023-12-19 09:35:56,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850044314] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 09:35:56,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 09:35:56,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [23] total 31 [2023-12-19 09:35:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728937505] [2023-12-19 09:35:56,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:35:56,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 09:35:56,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:35:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 09:35:56,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2023-12-19 09:35:56,271 INFO L87 Difference]: Start difference. First operand 648 states and 968 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:35:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:35:58,988 INFO L93 Difference]: Finished difference Result 1306 states and 1948 transitions. [2023-12-19 09:35:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 09:35:58,989 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 295 [2023-12-19 09:35:58,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:35:58,993 INFO L225 Difference]: With dead ends: 1306 [2023-12-19 09:35:58,993 INFO L226 Difference]: Without dead ends: 1035 [2023-12-19 09:35:58,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 09:35:58,995 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 349 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 09:35:58,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 995 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 09:35:58,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2023-12-19 09:35:59,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 663. [2023-12-19 09:35:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 498 states have (on average 1.4136546184738956) internal successors, (704), 498 states have internal predecessors, (704), 144 states have call successors, (144), 20 states have call predecessors, (144), 20 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-19 09:35:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 992 transitions. [2023-12-19 09:35:59,108 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 992 transitions. Word has length 295 [2023-12-19 09:35:59,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:35:59,109 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 992 transitions. [2023-12-19 09:35:59,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:35:59,109 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 992 transitions. [2023-12-19 09:35:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 09:35:59,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:35:59,111 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:35:59,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 09:35:59,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 09:35:59,320 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:35:59,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:35:59,321 INFO L85 PathProgramCache]: Analyzing trace with hash 74654294, now seen corresponding path program 1 times [2023-12-19 09:35:59,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:35:59,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101657670] [2023-12-19 09:35:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:35:59,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:35:59,342 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:35:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271422159] [2023-12-19 09:35:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:35:59,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:35:59,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:35:59,344 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:35:59,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 09:35:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:35:59,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 09:35:59,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:36:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 96 proven. 276 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2023-12-19 09:36:17,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 09:36:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-19 09:36:23,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 09:36:23,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101657670] [2023-12-19 09:36:23,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 09:36:23,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271422159] [2023-12-19 09:36:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271422159] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 09:36:23,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 09:36:23,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 22 [2023-12-19 09:36:23,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599325654] [2023-12-19 09:36:23,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 09:36:23,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 09:36:23,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 09:36:23,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 09:36:23,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-12-19 09:36:23,699 INFO L87 Difference]: Start difference. First operand 663 states and 992 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:36:29,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 09:36:29,284 INFO L93 Difference]: Finished difference Result 1117 states and 1649 transitions. [2023-12-19 09:36:29,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 09:36:29,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 295 [2023-12-19 09:36:29,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 09:36:29,289 INFO L225 Difference]: With dead ends: 1117 [2023-12-19 09:36:29,289 INFO L226 Difference]: Without dead ends: 843 [2023-12-19 09:36:29,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=273, Invalid=1059, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 09:36:29,291 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 579 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 09:36:29,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1115 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 09:36:29,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2023-12-19 09:36:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 648. [2023-12-19 09:36:29,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 483 states have (on average 1.4078674948240166) internal successors, (680), 483 states have internal predecessors, (680), 144 states have call successors, (144), 20 states have call predecessors, (144), 20 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-19 09:36:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 968 transitions. [2023-12-19 09:36:29,437 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 968 transitions. Word has length 295 [2023-12-19 09:36:29,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 09:36:29,437 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 968 transitions. [2023-12-19 09:36:29,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-12-19 09:36:29,438 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 968 transitions. [2023-12-19 09:36:29,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-19 09:36:29,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 09:36:29,439 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:36:29,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 09:36:29,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 09:36:29,647 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 09:36:29,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 09:36:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash -902535091, now seen corresponding path program 1 times [2023-12-19 09:36:29,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 09:36:29,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493199173] [2023-12-19 09:36:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:36:29,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 09:36:29,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 09:36:29,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343698938] [2023-12-19 09:36:29,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 09:36:29,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:36:29,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 09:36:29,675 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 09:36:29,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 09:36:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 09:36:29,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 09:36:29,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 09:37:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1229 proven. 252 refuted. 0 times theorem prover too weak. 3031 trivial. 0 not checked. [2023-12-19 09:37:33,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 09:47:51,320 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 09:47:51,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 09:47:51,357 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 09:47:51,358 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 [2023-12-19 09:47:51,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 09:47:51,529 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 297 with TraceHistMax 48,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-34-3-4-4-3-3-4-3-2-2-3-3-2-3-2-2-1 context. [2023-12-19 09:47:51,533 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 09:47:51,536 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 09:47:51,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 09:47:51 BoogieIcfgContainer [2023-12-19 09:47:51,538 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 09:47:51,538 INFO L158 Benchmark]: Toolchain (without parser) took 842238.74ms. Allocated memory was 292.6MB in the beginning and 1.0GB in the end (delta: 719.3MB). Free memory was 244.4MB in the beginning and 689.9MB in the end (delta: -445.5MB). Peak memory consumption was 607.4MB. Max. memory is 8.0GB. [2023-12-19 09:47:51,539 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 191.9MB. Free memory was 147.4MB in the beginning and 147.2MB in the end (delta: 140.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 09:47:51,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.90ms. Allocated memory is still 292.6MB. Free memory was 244.4MB in the beginning and 227.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-19 09:47:51,539 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.94ms. Allocated memory is still 292.6MB. Free memory was 227.1MB in the beginning and 221.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-19 09:47:51,539 INFO L158 Benchmark]: Boogie Preprocessor took 90.40ms. Allocated memory is still 292.6MB. Free memory was 221.3MB in the beginning and 214.6MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-19 09:47:51,540 INFO L158 Benchmark]: RCFGBuilder took 804.98ms. Allocated memory is still 292.6MB. Free memory was 214.4MB in the beginning and 258.9MB in the end (delta: -44.6MB). Peak memory consumption was 42.5MB. Max. memory is 8.0GB. [2023-12-19 09:47:51,540 INFO L158 Benchmark]: TraceAbstraction took 840874.78ms. Allocated memory was 292.6MB in the beginning and 1.0GB in the end (delta: 719.3MB). Free memory was 258.4MB in the beginning and 689.9MB in the end (delta: -431.5MB). Peak memory consumption was 620.5MB. Max. memory is 8.0GB. [2023-12-19 09:47:51,541 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 191.9MB. Free memory was 147.4MB in the beginning and 147.2MB in the end (delta: 140.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 381.90ms. Allocated memory is still 292.6MB. Free memory was 244.4MB in the beginning and 227.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 78.94ms. Allocated memory is still 292.6MB. Free memory was 227.1MB in the beginning and 221.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 90.40ms. Allocated memory is still 292.6MB. Free memory was 221.3MB in the beginning and 214.6MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 804.98ms. Allocated memory is still 292.6MB. Free memory was 214.4MB in the beginning and 258.9MB in the end (delta: -44.6MB). Peak memory consumption was 42.5MB. Max. memory is 8.0GB. * TraceAbstraction took 840874.78ms. Allocated memory was 292.6MB in the beginning and 1.0GB in the end (delta: 719.3MB). Free memory was 258.4MB in the beginning and 689.9MB in the end (delta: -431.5MB). Peak memory consumption was 620.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 297 with TraceHistMax 48,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-34-3-4-4-3-3-4-3-2-2-3-3-2-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 121 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 840.8s, OverallIterations: 18, TraceHistogramMax: 48, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 26.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11236 SdHoareTripleChecker+Valid, 15.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11060 mSDsluCounter, 14276 SdHoareTripleChecker+Invalid, 13.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11147 mSDsCounter, 3283 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11816 IncrementalHoareTripleChecker+Invalid, 15099 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3283 mSolverCounterUnsat, 3129 mSDtfsCounter, 11816 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9023 GetRequests, 8550 SyntacticMatches, 2 SemanticMatches, 471 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4799 ImplicationChecksByTransitivity, 27.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=874occurred in iteration=7, InterpolantAutomatonStates: 327, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 17 MinimizatonAttempts, 4040 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 122.5s InterpolantComputationTime, 4986 NumberOfCodeBlocks, 4986 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 8768 ConstructedInterpolants, 4 QuantifiedInterpolants, 90150 SizeOfPredicates, 258 NumberOfNonLiveVariables, 11201 ConjunctsInSsa, 321 ConjunctsInUnsatCore, 30 InterpolantComputations, 9 PerfectInterpolantSequences, 130815/135360 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