/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-ps-cn_file-21.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:30:51,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:30:51,492 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:30:51,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:30:51,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:30:51,524 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:30:51,525 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:30:51,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:30:51,526 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:30:51,529 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:30:51,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:30:51,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:30:51,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:30:51,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:30:51,532 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:30:51,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:30:51,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:30:51,533 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:30:51,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:30:51,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:30:51,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:30:51,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:30:51,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:30:51,535 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:30:51,535 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:30:51,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:30:51,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:30:51,536 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:30:51,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:30:51,536 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:30:51,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:30:51,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:30:51,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:30:51,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:30:51,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:30:51,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:30:51,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:30:51,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:30:51,539 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:30:51,539 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:30:51,539 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:30:51,539 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:30:51,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:30:51,540 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:30:51,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:30:51,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:30:51,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:30:51,786 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:30:51,786 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:30:51,787 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-21.i [2023-12-15 20:30:52,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:30:53,201 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:30:53,201 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-21.i [2023-12-15 20:30:53,210 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0da6bb3cc/8d36deed2cac416eaef21144813d99a4/FLAG258b5fe8f [2023-12-15 20:30:53,225 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0da6bb3cc/8d36deed2cac416eaef21144813d99a4 [2023-12-15 20:30:53,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:30:53,229 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:30:53,230 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:30:53,230 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:30:53,236 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:30:53,237 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264ad910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53, skipping insertion in model container [2023-12-15 20:30:53,238 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,279 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:30:53,407 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-ps-cn_file-21.i[919,932] [2023-12-15 20:30:53,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:30:53,497 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:30:53,507 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-ps-cn_file-21.i[919,932] [2023-12-15 20:30:53,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:30:53,576 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:30:53,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53 WrapperNode [2023-12-15 20:30:53,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:30:53,577 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:30:53,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:30:53,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:30:53,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,599 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,651 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 345 [2023-12-15 20:30:53,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:30:53,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:30:53,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:30:53,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:30:53,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,667 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,686 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 20:30:53,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:30:53,720 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:30:53,720 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:30:53,720 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:30:53,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (1/1) ... [2023-12-15 20:30:53,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:30:53,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:30:53,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 20:30:53,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 20:30:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:30:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:30:53,792 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:30:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:30:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:30:53,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:30:53,912 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:30:53,916 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:30:54,416 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:30:54,461 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:30:54,461 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:30:54,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:30:54 BoogieIcfgContainer [2023-12-15 20:30:54,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:30:54,463 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:30:54,463 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:30:54,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:30:54,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:30:53" (1/3) ... [2023-12-15 20:30:54,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568ff57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:30:54, skipping insertion in model container [2023-12-15 20:30:54,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:30:53" (2/3) ... [2023-12-15 20:30:54,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568ff57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:30:54, skipping insertion in model container [2023-12-15 20:30:54,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:30:54" (3/3) ... [2023-12-15 20:30:54,468 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-21.i [2023-12-15 20:30:54,482 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:30:54,482 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:30:54,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:30:54,539 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;@5b40055f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:30:54,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:30:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 79 states have (on average 1.4683544303797469) internal successors, (116), 80 states have internal predecessors, (116), 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) [2023-12-15 20:30:54,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-15 20:30:54,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:30:54,562 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] [2023-12-15 20:30:54,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:30:54,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:30:54,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1890655407, now seen corresponding path program 1 times [2023-12-15 20:30:54,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:30:54,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074858985] [2023-12-15 20:30:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:30:54,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:30:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:30:54,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:30:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074858985] [2023-12-15 20:30:54,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:30:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090346413] [2023-12-15 20:30:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:30:54,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:30:54,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:30:54,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:30:54,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:30:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:30:55,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:30:55,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:30:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2023-12-15 20:30:55,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:30:55,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090346413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:30:55,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:30:55,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:30:55,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814867408] [2023-12-15 20:30:55,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:30:55,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:30:55,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:30:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:30:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:30:55,187 INFO L87 Difference]: Start difference. First operand has 130 states, 79 states have (on average 1.4683544303797469) internal successors, (116), 80 states have internal predecessors, (116), 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 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-15 20:30:55,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:30:55,263 INFO L93 Difference]: Finished difference Result 257 states and 470 transitions. [2023-12-15 20:30:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:30:55,265 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 293 [2023-12-15 20:30:55,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:30:55,277 INFO L225 Difference]: With dead ends: 257 [2023-12-15 20:30:55,277 INFO L226 Difference]: Without dead ends: 128 [2023-12-15 20:30:55,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:30:55,289 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:30:55,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:30:55,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-15 20:30:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-12-15 20:30:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 78 states have internal predecessors, (111), 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) [2023-12-15 20:30:55,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 207 transitions. [2023-12-15 20:30:55,347 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 207 transitions. Word has length 293 [2023-12-15 20:30:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:30:55,347 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 207 transitions. [2023-12-15 20:30:55,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2023-12-15 20:30:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 207 transitions. [2023-12-15 20:30:55,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-15 20:30:55,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:30:55,354 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] [2023-12-15 20:30:55,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 20:30:55,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 20:30:55,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:30:55,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:30:55,566 INFO L85 PathProgramCache]: Analyzing trace with hash 465383633, now seen corresponding path program 1 times [2023-12-15 20:30:55,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:30:55,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756362256] [2023-12-15 20:30:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:30:55,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:30:55,686 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:30:55,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530123327] [2023-12-15 20:30:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:30:55,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:30:55,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:30:55,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:30:55,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:30:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:30:55,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 20:30:55,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:30:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 701 proven. 105 refuted. 0 times theorem prover too weak. 3706 trivial. 0 not checked. [2023-12-15 20:30:56,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:30:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 132 proven. 9 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-12-15 20:30:56,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:30:56,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756362256] [2023-12-15 20:30:56,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:30:56,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530123327] [2023-12-15 20:30:56,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530123327] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:30:56,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:30:56,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2023-12-15 20:30:56,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316662257] [2023-12-15 20:30:56,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:30:56,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 20:30:56,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:30:56,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 20:30:56,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-15 20:30:56,446 INFO L87 Difference]: Start difference. First operand 128 states and 207 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (51), 3 states have call predecessors, (51), 5 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) [2023-12-15 20:30:56,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:30:56,921 INFO L93 Difference]: Finished difference Result 266 states and 423 transitions. [2023-12-15 20:30:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 20:30:56,922 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (51), 3 states have call predecessors, (51), 5 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) Word has length 293 [2023-12-15 20:30:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:30:56,925 INFO L225 Difference]: With dead ends: 266 [2023-12-15 20:30:56,925 INFO L226 Difference]: Without dead ends: 139 [2023-12-15 20:30:56,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2023-12-15 20:30:56,927 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 148 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:30:56,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 734 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:30:56,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-15 20:30:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2023-12-15 20:30:56,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 85 states have (on average 1.3647058823529412) internal successors, (116), 85 states have internal predecessors, (116), 48 states have call successors, (48), 3 states have call predecessors, (48), 3 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-15 20:30:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 212 transitions. [2023-12-15 20:30:56,955 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 212 transitions. Word has length 293 [2023-12-15 20:30:56,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:30:56,956 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 212 transitions. [2023-12-15 20:30:56,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (51), 3 states have call predecessors, (51), 5 states have return successors, (53), 4 states have call predecessors, (53), 4 states have call successors, (53) [2023-12-15 20:30:56,956 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 212 transitions. [2023-12-15 20:30:56,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-15 20:30:56,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:30:56,961 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] [2023-12-15 20:30:56,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:30:57,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 20:30:57,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:30:57,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:30:57,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2025878578, now seen corresponding path program 1 times [2023-12-15 20:30:57,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:30:57,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737772763] [2023-12-15 20:30:57,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:30:57,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:30:57,258 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:30:57,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186903531] [2023-12-15 20:30:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:30:57,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:30:57,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:30:57,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:30:57,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:30:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:30:57,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 20:30:57,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:30:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1566 proven. 54 refuted. 0 times theorem prover too weak. 2892 trivial. 0 not checked. [2023-12-15 20:30:57,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:30:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 351 proven. 63 refuted. 0 times theorem prover too weak. 4098 trivial. 0 not checked. [2023-12-15 20:30:58,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:30:58,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737772763] [2023-12-15 20:30:58,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:30:58,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186903531] [2023-12-15 20:30:58,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186903531] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:30:58,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:30:58,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2023-12-15 20:30:58,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777315716] [2023-12-15 20:30:58,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:30:58,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 20:30:58,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:30:58,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 20:30:58,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-12-15 20:30:58,221 INFO L87 Difference]: Start difference. First operand 137 states and 212 transitions. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 4 states have call successors, (57), 4 states have call predecessors, (57), 10 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-12-15 20:30:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:30:58,922 INFO L93 Difference]: Finished difference Result 289 states and 436 transitions. [2023-12-15 20:30:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 20:30:58,923 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 4 states have call successors, (57), 4 states have call predecessors, (57), 10 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 294 [2023-12-15 20:30:58,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:30:58,927 INFO L225 Difference]: With dead ends: 289 [2023-12-15 20:30:58,927 INFO L226 Difference]: Without dead ends: 153 [2023-12-15 20:30:58,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 570 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=389, Invalid=871, Unknown=0, NotChecked=0, Total=1260 [2023-12-15 20:30:58,931 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 323 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:30:58,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 554 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:30:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-12-15 20:30:58,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2023-12-15 20:30:58,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 94 states have internal predecessors, (124), 48 states have call successors, (48), 6 states have call predecessors, (48), 6 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-15 20:30:58,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 220 transitions. [2023-12-15 20:30:58,973 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 220 transitions. Word has length 294 [2023-12-15 20:30:58,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:30:58,975 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 220 transitions. [2023-12-15 20:30:58,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 4 states have call successors, (57), 4 states have call predecessors, (57), 10 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2023-12-15 20:30:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 220 transitions. [2023-12-15 20:30:58,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-15 20:30:58,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:30:58,981 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] [2023-12-15 20:30:58,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:30:59,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:30:59,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:30:59,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:30:59,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1004810224, now seen corresponding path program 1 times [2023-12-15 20:30:59,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:30:59,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597673442] [2023-12-15 20:30:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:30:59,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:30:59,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:30:59,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006443722] [2023-12-15 20:30:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:30:59,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:30:59,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:30:59,245 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:30:59,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:30:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:30:59,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 20:30:59,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:31:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1311 proven. 117 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2023-12-15 20:31:00,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:31:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 20:31:01,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:31:01,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597673442] [2023-12-15 20:31:01,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:31:01,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006443722] [2023-12-15 20:31:01,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006443722] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 20:31:01,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:31:01,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2023-12-15 20:31:01,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094692972] [2023-12-15 20:31:01,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:31:01,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:31:01,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:31:01,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:31:01,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:31:01,035 INFO L87 Difference]: Start difference. First operand 149 states and 220 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2023-12-15 20:31:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:31:01,324 INFO L93 Difference]: Finished difference Result 357 states and 522 transitions. [2023-12-15 20:31:01,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 20:31:01,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 [2023-12-15 20:31:01,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:31:01,333 INFO L225 Difference]: With dead ends: 357 [2023-12-15 20:31:01,333 INFO L226 Difference]: Without dead ends: 209 [2023-12-15 20:31:01,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-15 20:31:01,335 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 152 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:31:01,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 623 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:31:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-15 20:31:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 196. [2023-12-15 20:31:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 131 states have (on average 1.3435114503816794) internal successors, (176), 132 states have internal predecessors, (176), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-15 20:31:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions. [2023-12-15 20:31:01,359 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 294 [2023-12-15 20:31:01,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:31:01,360 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions. [2023-12-15 20:31:01,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2023-12-15 20:31:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions. [2023-12-15 20:31:01,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-15 20:31:01,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:31:01,364 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] [2023-12-15 20:31:01,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:31:01,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:31:01,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:31:01,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:31:01,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1705874802, now seen corresponding path program 1 times [2023-12-15 20:31:01,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:31:01,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726829183] [2023-12-15 20:31:01,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:31:01,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:31:01,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:31:01,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35807625] [2023-12-15 20:31:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:31:01,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:31:01,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:31:01,610 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:31:01,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:31:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:31:01,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:31:01,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:31:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 20:31:01,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:31:01,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:31:01,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726829183] [2023-12-15 20:31:01,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:31:01,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35807625] [2023-12-15 20:31:01,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35807625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:31:01,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:31:01,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:31:01,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463289979] [2023-12-15 20:31:01,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:31:01,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:31:01,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:31:01,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:31:01,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:31:01,804 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2023-12-15 20:31:01,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:31:01,831 INFO L93 Difference]: Finished difference Result 382 states and 560 transitions. [2023-12-15 20:31:01,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:31:01,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 [2023-12-15 20:31:01,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:31:01,835 INFO L225 Difference]: With dead ends: 382 [2023-12-15 20:31:01,835 INFO L226 Difference]: Without dead ends: 187 [2023-12-15 20:31:01,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:31:01,837 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 13 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:31:01,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 383 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:31:01,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-12-15 20:31:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2023-12-15 20:31:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 122 states have (on average 1.3032786885245902) internal successors, (159), 123 states have internal predecessors, (159), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-15 20:31:01,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 271 transitions. [2023-12-15 20:31:01,859 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 271 transitions. Word has length 294 [2023-12-15 20:31:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:31:01,860 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 271 transitions. [2023-12-15 20:31:01,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2023-12-15 20:31:01,860 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 271 transitions. [2023-12-15 20:31:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-15 20:31:01,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:31:01,864 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] [2023-12-15 20:31:01,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 20:31:02,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:31:02,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:31:02,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:31:02,075 INFO L85 PathProgramCache]: Analyzing trace with hash 418004210, now seen corresponding path program 1 times [2023-12-15 20:31:02,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:31:02,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741406994] [2023-12-15 20:31:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:31:02,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:31:02,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:31:02,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043972803] [2023-12-15 20:31:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:31:02,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:31:02,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:31:02,106 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:31:02,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 20:31:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:31:02,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:31:02,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:31:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-12-15 20:31:02,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:31:02,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:31:02,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741406994] [2023-12-15 20:31:02,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:31:02,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043972803] [2023-12-15 20:31:02,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043972803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:31:02,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:31:02,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:31:02,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764528856] [2023-12-15 20:31:02,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:31:02,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:31:02,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:31:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:31:02,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:31:02,302 INFO L87 Difference]: Start difference. First operand 187 states and 271 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2023-12-15 20:31:02,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:31:02,334 INFO L93 Difference]: Finished difference Result 355 states and 514 transitions. [2023-12-15 20:31:02,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:31:02,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 [2023-12-15 20:31:02,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:31:02,336 INFO L225 Difference]: With dead ends: 355 [2023-12-15 20:31:02,336 INFO L226 Difference]: Without dead ends: 169 [2023-12-15 20:31:02,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:31:02,338 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 15 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:31:02,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 375 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:31:02,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-15 20:31:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2023-12-15 20:31:02,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 105 states have internal predecessors, (131), 56 states have call successors, (56), 8 states have call predecessors, (56), 8 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-15 20:31:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 243 transitions. [2023-12-15 20:31:02,364 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 243 transitions. Word has length 294 [2023-12-15 20:31:02,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:31:02,365 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 243 transitions. [2023-12-15 20:31:02,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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) [2023-12-15 20:31:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 243 transitions. [2023-12-15 20:31:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-15 20:31:02,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:31:02,367 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] [2023-12-15 20:31:02,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 20:31:02,576 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 [2023-12-15 20:31:02,577 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:31:02,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:31:02,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1326054434, now seen corresponding path program 1 times [2023-12-15 20:31:02,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:31:02,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080057460] [2023-12-15 20:31:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:31:02,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:31:02,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:31:02,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974588217] [2023-12-15 20:31:02,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:31:02,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:31:02,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:31:02,612 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) [2023-12-15 20:31:02,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 20:31:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:31:02,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-15 20:31:02,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:31:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2042 proven. 321 refuted. 0 times theorem prover too weak. 2149 trivial. 0 not checked. [2023-12-15 20:31:35,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 20:31:59,890 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:31:59,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 20:31:59,920 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:31:59,933 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:32:00,097 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 [2023-12-15 20:32:00,097 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 ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-4-3-1 context. [2023-12-15 20:32:00,101 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:32:00,102 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:32:00,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:32:00 BoogieIcfgContainer [2023-12-15 20:32:00,104 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:32:00,105 INFO L158 Benchmark]: Toolchain (without parser) took 66875.98ms. Allocated memory was 266.3MB in the beginning and 766.5MB in the end (delta: 500.2MB). Free memory was 215.2MB in the beginning and 440.1MB in the end (delta: -224.9MB). Peak memory consumption was 275.6MB. Max. memory is 8.0GB. [2023-12-15 20:32:00,105 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:32:00,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.87ms. Allocated memory is still 266.3MB. Free memory was 215.2MB in the beginning and 197.4MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-15 20:32:00,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.02ms. Allocated memory is still 266.3MB. Free memory was 197.4MB in the beginning and 191.8MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:32:00,106 INFO L158 Benchmark]: Boogie Preprocessor took 67.49ms. Allocated memory is still 266.3MB. Free memory was 191.8MB in the beginning and 183.8MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-15 20:32:00,106 INFO L158 Benchmark]: RCFGBuilder took 741.61ms. Allocated memory is still 266.3MB. Free memory was 183.8MB in the beginning and 211.9MB in the end (delta: -28.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-15 20:32:00,106 INFO L158 Benchmark]: TraceAbstraction took 65640.78ms. Allocated memory was 266.3MB in the beginning and 766.5MB in the end (delta: 500.2MB). Free memory was 211.4MB in the beginning and 440.1MB in the end (delta: -228.7MB). Peak memory consumption was 271.4MB. Max. memory is 8.0GB. [2023-12-15 20:32:00,109 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 346.87ms. Allocated memory is still 266.3MB. Free memory was 215.2MB in the beginning and 197.4MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 74.02ms. Allocated memory is still 266.3MB. Free memory was 197.4MB in the beginning and 191.8MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 67.49ms. Allocated memory is still 266.3MB. Free memory was 191.8MB in the beginning and 183.8MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 741.61ms. Allocated memory is still 266.3MB. Free memory was 183.8MB in the beginning and 211.9MB in the end (delta: -28.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 65640.78ms. Allocated memory was 266.3MB in the beginning and 766.5MB in the end (delta: 500.2MB). Free memory was 211.4MB in the beginning and 440.1MB in the end (delta: -228.7MB). Peak memory consumption was 271.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 297 with TraceHistMax 48,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-4-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 130 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.6s, OverallIterations: 7, TraceHistogramMax: 48, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 695 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 651 mSDsluCounter, 2873 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1764 mSDsCounter, 316 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1126 IncrementalHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 316 mSolverCounterUnsat, 1109 mSDtfsCounter, 1126 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2662 GetRequests, 2595 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=4, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 2055 NumberOfCodeBlocks, 2055 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2634 ConstructedInterpolants, 0 QuantifiedInterpolants, 5646 SizeOfPredicates, 26 NumberOfNonLiveVariables, 3988 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 40260/40608 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