/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-pe-co_file-81.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 08:48:52,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 08:48:52,307 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 08:48:52,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 08:48:52,312 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 08:48:52,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 08:48:52,335 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 08:48:52,336 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 08:48:52,336 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 08:48:52,336 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 08:48:52,336 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 08:48:52,337 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 08:48:52,337 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 08:48:52,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 08:48:52,337 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 08:48:52,338 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 08:48:52,338 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 08:48:52,338 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 08:48:52,338 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 08:48:52,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 08:48:52,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 08:48:52,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 08:48:52,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 08:48:52,342 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 08:48:52,348 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 08:48:52,348 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 08:48:52,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 08:48:52,348 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 08:48:52,349 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 08:48:52,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 08:48:52,349 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 08:48:52,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 08:48:52,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:48:52,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 08:48:52,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 08:48:52,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 08:48:52,350 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 08:48:52,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 08:48:52,350 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 08:48:52,350 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 08:48:52,351 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 08:48:52,351 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 08:48:52,351 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 08:48:52,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 08:48:52,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 08:48:52,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 08:48:52,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 08:48:52,538 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 08:48:52,538 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 08:48:52,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i [2023-12-19 08:48:53,585 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 08:48:53,757 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 08:48:53,757 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i [2023-12-19 08:48:53,772 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72de16626/64896ca7252040949bb344e26211043d/FLAG4e3e0eb85 [2023-12-19 08:48:53,781 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72de16626/64896ca7252040949bb344e26211043d [2023-12-19 08:48:53,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 08:48:53,785 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 08:48:53,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 08:48:53,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 08:48:53,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 08:48:53,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:48:53" (1/1) ... [2023-12-19 08:48:53,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccda0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:53, skipping insertion in model container [2023-12-19 08:48:53,791 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:48:53" (1/1) ... [2023-12-19 08:48:53,825 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 08:48:53,927 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-pe-co_file-81.i[919,932] [2023-12-19 08:48:53,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:48:53,999 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 08:48:54,008 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-pe-co_file-81.i[919,932] [2023-12-19 08:48:54,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:48:54,050 INFO L206 MainTranslator]: Completed translation [2023-12-19 08:48:54,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54 WrapperNode [2023-12-19 08:48:54,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 08:48:54,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 08:48:54,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 08:48:54,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 08:48:54,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (1/1) ... [2023-12-19 08:48:54,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (1/1) ... [2023-12-19 08:48:54,117 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 309 [2023-12-19 08:48:54,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 08:48:54,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 08:48:54,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 08:48:54,119 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 08:48:54,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (1/1) ... [2023-12-19 08:48:54,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (1/1) ... [2023-12-19 08:48:54,137 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (1/1) ... [2023-12-19 08:48:54,154 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 08:48:54,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (1/1) ... [2023-12-19 08:48:54,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (1/1) ... [2023-12-19 08:48:54,163 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (1/1) ... [2023-12-19 08:48:54,166 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (1/1) ... [2023-12-19 08:48:54,168 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (1/1) ... [2023-12-19 08:48:54,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (1/1) ... [2023-12-19 08:48:54,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 08:48:54,174 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 08:48:54,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 08:48:54,174 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 08:48:54,175 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (1/1) ... [2023-12-19 08:48:54,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:48:54,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:48:54,208 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 08:48:54,219 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 08:48:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 08:48:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 08:48:54,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 08:48:54,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 08:48:54,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 08:48:54,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 08:48:54,308 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 08:48:54,310 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 08:48:54,789 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 08:48:54,819 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 08:48:54,819 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 08:48:54,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:48:54 BoogieIcfgContainer [2023-12-19 08:48:54,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 08:48:54,822 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 08:48:54,822 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 08:48:54,824 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 08:48:54,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:48:53" (1/3) ... [2023-12-19 08:48:54,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2faa9561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:48:54, skipping insertion in model container [2023-12-19 08:48:54,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:48:54" (2/3) ... [2023-12-19 08:48:54,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2faa9561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:48:54, skipping insertion in model container [2023-12-19 08:48:54,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:48:54" (3/3) ... [2023-12-19 08:48:54,827 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-81.i [2023-12-19 08:48:54,839 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 08:48:54,839 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 08:48:54,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 08:48:54,890 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;@6620831a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 08:48:54,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 08:48:54,894 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 08:48:54,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-19 08:48:54,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:48:54,924 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 08:48:54,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:48:54,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:48:54,931 INFO L85 PathProgramCache]: Analyzing trace with hash 978983210, now seen corresponding path program 1 times [2023-12-19 08:48:54,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:48:54,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355814409] [2023-12-19 08:48:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:48:54,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:48:55,103 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:48:55,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371394334] [2023-12-19 08:48:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:48:55,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:48:55,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:48:55,110 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 08:48:55,132 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 08:48:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:48:55,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 08:48:55,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:48:55,740 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 08:48:55,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:48:56,042 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 08:48:56,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:48:56,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355814409] [2023-12-19 08:48:56,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:48:56,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371394334] [2023-12-19 08:48:56,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371394334] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:48:56,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:48:56,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 08:48:56,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586861546] [2023-12-19 08:48:56,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:48:56,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:48:56,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:48:56,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:48:56,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-19 08:48:56,095 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, (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 08:48:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:48:56,678 INFO L93 Difference]: Finished difference Result 338 states and 651 transitions. [2023-12-19 08:48:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 08:48:56,680 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, (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 291 [2023-12-19 08:48:56,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:48:56,688 INFO L225 Difference]: With dead ends: 338 [2023-12-19 08:48:56,689 INFO L226 Difference]: Without dead ends: 218 [2023-12-19 08:48:56,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-12-19 08:48:56,694 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 261 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 08:48:56,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 549 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 08:48:56,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-19 08:48:56,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 123. [2023-12-19 08:48:56,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 72 states have internal predecessors, (101), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-19 08:48:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 197 transitions. [2023-12-19 08:48:56,742 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 197 transitions. Word has length 291 [2023-12-19 08:48:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:48:56,743 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 197 transitions. [2023-12-19 08:48:56,743 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, (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 08:48:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 197 transitions. [2023-12-19 08:48:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-12-19 08:48:56,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:48:56,747 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 08:48:56,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 08:48:56,962 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 08:48:56,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:48:56,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:48:56,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1590804289, now seen corresponding path program 1 times [2023-12-19 08:48:56,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:48:56,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511361021] [2023-12-19 08:48:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:48:56,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:48:57,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:48:57,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109579808] [2023-12-19 08:48:57,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:48:57,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:48:57,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:48:57,034 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 08:48:57,047 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 08:48:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:48:57,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 08:48:57,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:48:57,205 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 08:48:57,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:48:57,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:48:57,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511361021] [2023-12-19 08:48:57,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:48:57,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109579808] [2023-12-19 08:48:57,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109579808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:48:57,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:48:57,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 08:48:57,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651410203] [2023-12-19 08:48:57,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:48:57,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 08:48:57,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:48:57,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 08:48:57,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:48:57,210 INFO L87 Difference]: Start difference. First operand 123 states and 197 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 08:48:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:48:57,401 INFO L93 Difference]: Finished difference Result 347 states and 556 transitions. [2023-12-19 08:48:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 08:48:57,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 292 [2023-12-19 08:48:57,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:48:57,406 INFO L225 Difference]: With dead ends: 347 [2023-12-19 08:48:57,406 INFO L226 Difference]: Without dead ends: 215 [2023-12-19 08:48:57,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 288 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 08:48:57,409 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 203 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:48:57,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 905 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:48:57,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-19 08:48:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 124. [2023-12-19 08:48:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 73 states have internal predecessors, (102), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-19 08:48:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 198 transitions. [2023-12-19 08:48:57,433 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 198 transitions. Word has length 292 [2023-12-19 08:48:57,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:48:57,434 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 198 transitions. [2023-12-19 08:48:57,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 08:48:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 198 transitions. [2023-12-19 08:48:57,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 08:48:57,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:48:57,437 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 08:48:57,443 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 08:48:57,641 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 08:48:57,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:48:57,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:48:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash 254954487, now seen corresponding path program 1 times [2023-12-19 08:48:57,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:48:57,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129390776] [2023-12-19 08:48:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:48:57,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:48:57,695 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:48:57,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608082790] [2023-12-19 08:48:57,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:48:57,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:48:57,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:48:57,705 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 08:48:57,727 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 08:48:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:48:57,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 08:48:57,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:48:57,856 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 08:48:57,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:48:57,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:48:57,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129390776] [2023-12-19 08:48:57,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:48:57,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608082790] [2023-12-19 08:48:57,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608082790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:48:57,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:48:57,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:48:57,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308205476] [2023-12-19 08:48:57,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:48:57,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 08:48:57,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:48:57,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 08:48:57,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:48:57,858 INFO L87 Difference]: Start difference. First operand 124 states and 198 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 08:48:57,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:48:57,884 INFO L93 Difference]: Finished difference Result 291 states and 464 transitions. [2023-12-19 08:48:57,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 08:48:57,885 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 08:48:57,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:48:57,888 INFO L225 Difference]: With dead ends: 291 [2023-12-19 08:48:57,888 INFO L226 Difference]: Without dead ends: 168 [2023-12-19 08:48:57,889 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 08:48:57,891 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 63 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 383 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 08:48:57,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 383 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:48:57,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-19 08:48:57,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2023-12-19 08:48:57,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 109 states have (on average 1.4678899082568808) internal successors, (160), 110 states have internal predecessors, (160), 52 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-19 08:48:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 264 transitions. [2023-12-19 08:48:57,920 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 264 transitions. Word has length 293 [2023-12-19 08:48:57,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:48:57,921 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 264 transitions. [2023-12-19 08:48:57,921 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 08:48:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 264 transitions. [2023-12-19 08:48:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 08:48:57,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:48:57,924 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 08:48:57,934 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 08:48:58,130 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 08:48:58,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:48:58,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:48:58,131 INFO L85 PathProgramCache]: Analyzing trace with hash -766113867, now seen corresponding path program 1 times [2023-12-19 08:48:58,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:48:58,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772224172] [2023-12-19 08:48:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:48:58,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:48:58,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:48:58,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85140330] [2023-12-19 08:48:58,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:48:58,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:48:58,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:48:58,164 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 08:48:58,165 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 08:48:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:48:58,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 08:48:58,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:48:58,523 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 08:48:58,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:48:58,762 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 08:48:58,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:48:58,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772224172] [2023-12-19 08:48:58,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:48:58,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85140330] [2023-12-19 08:48:58,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85140330] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:48:58,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:48:58,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-19 08:48:58,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944647272] [2023-12-19 08:48:58,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:48:58,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 08:48:58,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:48:58,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 08:48:58,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 08:48:58,767 INFO L87 Difference]: Start difference. First operand 165 states and 264 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 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 08:48:59,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:48:59,289 INFO L93 Difference]: Finished difference Result 492 states and 775 transitions. [2023-12-19 08:48:59,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 08:48:59,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 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 293 [2023-12-19 08:48:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:48:59,292 INFO L225 Difference]: With dead ends: 492 [2023-12-19 08:48:59,293 INFO L226 Difference]: Without dead ends: 328 [2023-12-19 08:48:59,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 577 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2023-12-19 08:48:59,294 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 278 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 08:48:59,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 562 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 08:48:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-19 08:48:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 211. [2023-12-19 08:48:59,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 154 states have (on average 1.5064935064935066) internal successors, (232), 155 states have internal predecessors, (232), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-19 08:48:59,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 336 transitions. [2023-12-19 08:48:59,318 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 336 transitions. Word has length 293 [2023-12-19 08:48:59,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:48:59,319 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 336 transitions. [2023-12-19 08:48:59,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 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 08:48:59,319 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 336 transitions. [2023-12-19 08:48:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 08:48:59,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:48:59,322 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 08:48:59,336 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 08:48:59,536 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 08:48:59,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:48:59,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:48:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1283557076, now seen corresponding path program 1 times [2023-12-19 08:48:59,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:48:59,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909821894] [2023-12-19 08:48:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:48:59,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:48:59,581 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:48:59,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517269382] [2023-12-19 08:48:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:48:59,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:48:59,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:48:59,594 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 08:48:59,616 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 08:48:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:48:59,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 08:48:59,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:49:00,035 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 08:49:00,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:49:00,330 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 08:49:00,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:49:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909821894] [2023-12-19 08:49:00,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:49:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517269382] [2023-12-19 08:49:00,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517269382] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:49:00,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:49:00,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-19 08:49:00,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607091558] [2023-12-19 08:49:00,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:49:00,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 08:49:00,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:49:00,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 08:49:00,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-12-19 08:49:00,333 INFO L87 Difference]: Start difference. First operand 211 states and 336 transitions. Second operand has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 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 08:49:02,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:49:02,321 INFO L93 Difference]: Finished difference Result 1249 states and 1991 transitions. [2023-12-19 08:49:02,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 08:49:02,321 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 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 293 [2023-12-19 08:49:02,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:49:02,326 INFO L225 Difference]: With dead ends: 1249 [2023-12-19 08:49:02,326 INFO L226 Difference]: Without dead ends: 1039 [2023-12-19 08:49:02,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=950, Invalid=3472, Unknown=0, NotChecked=0, Total=4422 [2023-12-19 08:49:02,329 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 1629 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 2042 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 2042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 08:49:02,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 1084 Invalid, 2584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 2042 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 08:49:02,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2023-12-19 08:49:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 551. [2023-12-19 08:49:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 423 states have (on average 1.5224586288416075) internal successors, (644), 428 states have internal predecessors, (644), 116 states have call successors, (116), 11 states have call predecessors, (116), 11 states have return successors, (116), 111 states have call predecessors, (116), 116 states have call successors, (116) [2023-12-19 08:49:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 876 transitions. [2023-12-19 08:49:02,376 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 876 transitions. Word has length 293 [2023-12-19 08:49:02,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:49:02,377 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 876 transitions. [2023-12-19 08:49:02,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 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 08:49:02,377 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 876 transitions. [2023-12-19 08:49:02,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 08:49:02,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:49:02,380 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 08:49:02,400 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 08:49:02,584 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 08:49:02,585 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:49:02,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:49:02,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1287555922, now seen corresponding path program 1 times [2023-12-19 08:49:02,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:49:02,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396466472] [2023-12-19 08:49:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:49:02,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:49:02,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:49:02,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726809972] [2023-12-19 08:49:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:49:02,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:49:02,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:49:02,616 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 08:49:02,621 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 08:49:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:49:02,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 08:49:02,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:49:03,399 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 08:49:03,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:49:03,790 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 08:49:03,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:49:03,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396466472] [2023-12-19 08:49:03,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:49:03,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726809972] [2023-12-19 08:49:03,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726809972] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:49:03,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:49:03,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-19 08:49:03,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146026330] [2023-12-19 08:49:03,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:49:03,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 08:49:03,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:49:03,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 08:49:03,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-12-19 08:49:03,793 INFO L87 Difference]: Start difference. First operand 551 states and 876 transitions. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 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 08:49:04,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:49:04,565 INFO L93 Difference]: Finished difference Result 1636 states and 2458 transitions. [2023-12-19 08:49:04,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-19 08:49:04,565 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 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 294 [2023-12-19 08:49:04,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:49:04,570 INFO L225 Difference]: With dead ends: 1636 [2023-12-19 08:49:04,570 INFO L226 Difference]: Without dead ends: 1086 [2023-12-19 08:49:04,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 575 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 08:49:04,572 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 512 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 08:49:04,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 549 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 08:49:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2023-12-19 08:49:04,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 539. [2023-12-19 08:49:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 443 states have (on average 1.5056433408577878) internal successors, (667), 448 states have internal predecessors, (667), 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 08:49:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 823 transitions. [2023-12-19 08:49:04,616 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 823 transitions. Word has length 294 [2023-12-19 08:49:04,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:49:04,617 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 823 transitions. [2023-12-19 08:49:04,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 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 08:49:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 823 transitions. [2023-12-19 08:49:04,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 08:49:04,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:49:04,620 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 08:49:04,630 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 08:49:04,826 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 08:49:04,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:49:04,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:49:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1700842878, now seen corresponding path program 1 times [2023-12-19 08:49:04,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:49:04,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646027919] [2023-12-19 08:49:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:49:04,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:49:04,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:49:04,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033051608] [2023-12-19 08:49:04,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:49:04,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:49:04,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:49:04,849 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 08:49:04,874 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 08:49:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:49:05,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 08:49:05,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:49:05,697 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 08:49:05,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:49:06,001 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 08:49:06,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:49:06,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646027919] [2023-12-19 08:49:06,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:49:06,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033051608] [2023-12-19 08:49:06,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033051608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:49:06,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:49:06,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 08:49:06,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536246700] [2023-12-19 08:49:06,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:49:06,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 08:49:06,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:49:06,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 08:49:06,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-12-19 08:49:06,005 INFO L87 Difference]: Start difference. First operand 539 states and 823 transitions. Second operand has 18 states, 17 states have (on average 5.764705882352941) internal successors, (98), 18 states have internal predecessors, (98), 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 08:49:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:49:07,601 INFO L93 Difference]: Finished difference Result 1857 states and 2835 transitions. [2023-12-19 08:49:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 08:49:07,607 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.764705882352941) internal successors, (98), 18 states have internal predecessors, (98), 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 08:49:07,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:49:07,612 INFO L225 Difference]: With dead ends: 1857 [2023-12-19 08:49:07,612 INFO L226 Difference]: Without dead ends: 1319 [2023-12-19 08:49:07,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=1347, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 08:49:07,614 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 2051 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:49:07,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2098 Valid, 1235 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 08:49:07,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-12-19 08:49:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 803. [2023-12-19 08:49:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 634 states have (on average 1.476340694006309) internal successors, (936), 641 states have internal predecessors, (936), 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 08:49:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1216 transitions. [2023-12-19 08:49:07,671 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1216 transitions. Word has length 294 [2023-12-19 08:49:07,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:49:07,671 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1216 transitions. [2023-12-19 08:49:07,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.764705882352941) internal successors, (98), 18 states have internal predecessors, (98), 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 08:49:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1216 transitions. [2023-12-19 08:49:07,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 08:49:07,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:49:07,673 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 08:49:07,691 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 08:49:07,890 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 08:49:07,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:49:07,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:49:07,894 INFO L85 PathProgramCache]: Analyzing trace with hash 104595456, now seen corresponding path program 1 times [2023-12-19 08:49:07,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:49:07,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973927784] [2023-12-19 08:49:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:49:07,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:49:07,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:49:07,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206046009] [2023-12-19 08:49:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:49:07,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:49:07,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:49:07,924 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 08:49:07,944 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 08:49:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:49:08,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 08:49:08,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:49:08,691 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 08:49:08,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:49:09,087 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 08:49:09,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:49:09,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973927784] [2023-12-19 08:49:09,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:49:09,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206046009] [2023-12-19 08:49:09,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206046009] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:49:09,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:49:09,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-19 08:49:09,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978716747] [2023-12-19 08:49:09,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:49:09,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 08:49:09,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:49:09,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 08:49:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-19 08:49:09,091 INFO L87 Difference]: Start difference. First operand 803 states and 1216 transitions. Second operand has 16 states, 15 states have (on average 6.4) internal successors, (96), 16 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 08:49:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:49:10,679 INFO L93 Difference]: Finished difference Result 1676 states and 2555 transitions. [2023-12-19 08:49:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 08:49:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.4) internal successors, (96), 16 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 08:49:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:49:10,684 INFO L225 Difference]: With dead ends: 1676 [2023-12-19 08:49:10,684 INFO L226 Difference]: Without dead ends: 1134 [2023-12-19 08:49:10,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=345, Invalid=915, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 08:49:10,686 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1195 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:49:10,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 875 Invalid, 2294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 08:49:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2023-12-19 08:49:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 263. [2023-12-19 08:49:10,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 189 states have (on average 1.402116402116402) internal successors, (265), 191 states have internal predecessors, (265), 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 08:49:10,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 389 transitions. [2023-12-19 08:49:10,728 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 389 transitions. Word has length 294 [2023-12-19 08:49:10,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:49:10,729 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 389 transitions. [2023-12-19 08:49:10,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.4) internal successors, (96), 16 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 08:49:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 389 transitions. [2023-12-19 08:49:10,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 08:49:10,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:49:10,730 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 08:49:10,747 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 08:49:10,936 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 08:49:10,937 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:49:10,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:49:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1560294268, now seen corresponding path program 1 times [2023-12-19 08:49:10,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:49:10,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455413773] [2023-12-19 08:49:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:49:10,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:49:10,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:49:10,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795807754] [2023-12-19 08:49:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:49:10,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:49:10,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:49:10,960 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 08:49:10,963 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 08:49:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:49:11,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 08:49:11,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:49:12,075 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 08:49:12,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:49:12,778 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 08:49:12,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:49:12,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455413773] [2023-12-19 08:49:12,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:49:12,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795807754] [2023-12-19 08:49:12,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795807754] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:49:12,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:49:12,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 08:49:12,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110726237] [2023-12-19 08:49:12,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:49:12,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 08:49:12,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:49:12,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 08:49:12,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-12-19 08:49:12,784 INFO L87 Difference]: Start difference. First operand 263 states and 389 transitions. Second operand has 18 states, 17 states have (on average 5.764705882352941) internal successors, (98), 18 states have internal predecessors, (98), 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 08:49:13,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:49:13,917 INFO L93 Difference]: Finished difference Result 756 states and 1147 transitions. [2023-12-19 08:49:13,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:49:13,918 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.764705882352941) internal successors, (98), 18 states have internal predecessors, (98), 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 08:49:13,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:49:13,920 INFO L225 Difference]: With dead ends: 756 [2023-12-19 08:49:13,920 INFO L226 Difference]: Without dead ends: 525 [2023-12-19 08:49:13,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-12-19 08:49:13,921 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 908 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 08:49:13,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 813 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 08:49:13,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-12-19 08:49:13,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 339. [2023-12-19 08:49:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 225 states have (on average 1.3466666666666667) internal successors, (303), 226 states have internal predecessors, (303), 100 states have call successors, (100), 13 states have call predecessors, (100), 13 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-19 08:49:13,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 503 transitions. [2023-12-19 08:49:13,987 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 503 transitions. Word has length 294 [2023-12-19 08:49:13,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:49:13,987 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 503 transitions. [2023-12-19 08:49:13,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.764705882352941) internal successors, (98), 18 states have internal predecessors, (98), 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 08:49:13,988 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 503 transitions. [2023-12-19 08:49:13,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 08:49:13,992 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:49:13,992 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 08:49:14,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 08:49:14,198 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 08:49:14,198 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:49:14,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:49:14,199 INFO L85 PathProgramCache]: Analyzing trace with hash 245144066, now seen corresponding path program 1 times [2023-12-19 08:49:14,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:49:14,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448848131] [2023-12-19 08:49:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:49:14,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:49:14,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:49:14,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507100916] [2023-12-19 08:49:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:49:14,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:49:14,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:49:14,220 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 08:49:14,240 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 08:49:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:49:14,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-19 08:49:14,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:49:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1531 proven. 906 refuted. 0 times theorem prover too weak. 2075 trivial. 0 not checked. [2023-12-19 08:49:44,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:49:52,838 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 08:49:52,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:49:52,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448848131] [2023-12-19 08:49:52,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:49:52,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507100916] [2023-12-19 08:49:52,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507100916] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:49:52,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:49:52,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [38] total 46 [2023-12-19 08:49:52,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784502228] [2023-12-19 08:49:52,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:49:52,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:49:52,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:49:52,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:49:52,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1646, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 08:49:52,840 INFO L87 Difference]: Start difference. First operand 339 states and 503 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 08:50:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:50:08,563 INFO L93 Difference]: Finished difference Result 866 states and 1280 transitions. [2023-12-19 08:50:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 08:50:08,565 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 08:50:08,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:50:08,567 INFO L225 Difference]: With dead ends: 866 [2023-12-19 08:50:08,567 INFO L226 Difference]: Without dead ends: 635 [2023-12-19 08:50:08,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=669, Invalid=3363, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 08:50:08,569 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 635 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 08:50:08,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 916 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 08:50:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2023-12-19 08:50:08,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 362. [2023-12-19 08:50:08,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 248 states have (on average 1.3709677419354838) internal successors, (340), 249 states have internal predecessors, (340), 100 states have call successors, (100), 13 states have call predecessors, (100), 13 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-19 08:50:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 540 transitions. [2023-12-19 08:50:08,632 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 540 transitions. Word has length 294 [2023-12-19 08:50:08,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:50:08,633 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 540 transitions. [2023-12-19 08:50:08,633 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 08:50:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 540 transitions. [2023-12-19 08:50:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 08:50:08,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:50:08,634 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 08:50:08,643 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 08:50:08,836 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 08:50:08,836 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:50:08,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:50:08,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1688914246, now seen corresponding path program 1 times [2023-12-19 08:50:08,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:50:08,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913371125] [2023-12-19 08:50:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:50:08,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:50:08,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:50:08,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871145667] [2023-12-19 08:50:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:50:08,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:50:08,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:50:08,863 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 08:50:08,864 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 08:50:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:50:09,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 08:50:09,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:50:09,029 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 08:50:09,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:50:09,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:50:09,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913371125] [2023-12-19 08:50:09,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:50:09,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871145667] [2023-12-19 08:50:09,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871145667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:50:09,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:50:09,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 08:50:09,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782602572] [2023-12-19 08:50:09,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:50:09,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:50:09,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:50:09,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:50:09,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:50:09,031 INFO L87 Difference]: Start difference. First operand 362 states and 540 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 08:50:09,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:50:09,143 INFO L93 Difference]: Finished difference Result 629 states and 945 transitions. [2023-12-19 08:50:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 08:50:09,144 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 08:50:09,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:50:09,145 INFO L225 Difference]: With dead ends: 629 [2023-12-19 08:50:09,145 INFO L226 Difference]: Without dead ends: 375 [2023-12-19 08:50:09,146 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 08:50:09,147 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 162 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 503 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 08:50:09,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 503 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:50:09,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-19 08:50:09,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 372. [2023-12-19 08:50:09,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 258 states have (on average 1.3682170542635659) internal successors, (353), 259 states have internal predecessors, (353), 100 states have call successors, (100), 13 states have call predecessors, (100), 13 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-19 08:50:09,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 553 transitions. [2023-12-19 08:50:09,205 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 553 transitions. Word has length 294 [2023-12-19 08:50:09,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:50:09,205 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 553 transitions. [2023-12-19 08:50:09,205 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 08:50:09,206 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 553 transitions. [2023-12-19 08:50:09,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 08:50:09,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:50:09,207 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 08:50:09,213 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 08:50:09,413 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 08:50:09,413 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:50:09,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:50:09,414 INFO L85 PathProgramCache]: Analyzing trace with hash 463998784, now seen corresponding path program 1 times [2023-12-19 08:50:09,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:50:09,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190070452] [2023-12-19 08:50:09,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:50:09,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:50:09,430 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:50:09,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601027396] [2023-12-19 08:50:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:50:09,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:50:09,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:50:09,447 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 08:50:09,483 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 08:50:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:50:09,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 08:50:09,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:50:30,506 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 08:50:30,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:50:37,485 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 08:50:37,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:50:37,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190070452] [2023-12-19 08:50:37,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:50:37,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601027396] [2023-12-19 08:50:37,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601027396] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:50:37,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:50:37,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-12-19 08:50:37,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904568288] [2023-12-19 08:50:37,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:50:37,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:50:37,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:50:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:50:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2023-12-19 08:50:37,490 INFO L87 Difference]: Start difference. First operand 372 states and 553 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 08:50:49,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:50:49,064 INFO L93 Difference]: Finished difference Result 923 states and 1369 transitions. [2023-12-19 08:50:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 08:50:49,064 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 08:50:49,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:50:49,067 INFO L225 Difference]: With dead ends: 923 [2023-12-19 08:50:49,067 INFO L226 Difference]: Without dead ends: 662 [2023-12-19 08:50:49,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=365, Invalid=1275, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 08:50:49,068 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 471 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:50:49,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1041 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 08:50:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-12-19 08:50:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 372. [2023-12-19 08:50:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 258 states have (on average 1.3682170542635659) internal successors, (353), 259 states have internal predecessors, (353), 100 states have call successors, (100), 13 states have call predecessors, (100), 13 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-19 08:50:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 553 transitions. [2023-12-19 08:50:49,137 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 553 transitions. Word has length 294 [2023-12-19 08:50:49,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:50:49,138 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 553 transitions. [2023-12-19 08:50:49,138 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 08:50:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 553 transitions. [2023-12-19 08:50:49,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 08:50:49,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:50:49,140 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 08:50:49,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 08:50:49,346 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 08:50:49,347 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:50:49,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:50:49,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1723186523, now seen corresponding path program 1 times [2023-12-19 08:50:49,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:50:49,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018298834] [2023-12-19 08:50:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:50:49,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:50:49,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:50:49,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921776419] [2023-12-19 08:50:49,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:50:49,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:50:49,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:50:49,368 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 08:50:49,370 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 08:50:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:50:49,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 08:50:49,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:50:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1352 proven. 228 refuted. 0 times theorem prover too weak. 2932 trivial. 0 not checked. [2023-12-19 08:50:50,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:50:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 48 proven. 231 refuted. 0 times theorem prover too weak. 4233 trivial. 0 not checked. [2023-12-19 08:50:51,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:50:51,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018298834] [2023-12-19 08:50:51,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:50:51,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921776419] [2023-12-19 08:50:51,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921776419] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:50:51,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:50:51,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2023-12-19 08:50:51,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152350339] [2023-12-19 08:50:51,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:50:51,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 08:50:51,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:50:51,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 08:50:51,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2023-12-19 08:50:51,601 INFO L87 Difference]: Start difference. First operand 372 states and 553 transitions. Second operand has 30 states, 29 states have (on average 4.310344827586207) internal successors, (125), 28 states have internal predecessors, (125), 6 states have call successors, (96), 4 states have call predecessors, (96), 7 states have return successors, (96), 6 states have call predecessors, (96), 6 states have call successors, (96) [2023-12-19 08:50:58,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:50:58,382 INFO L93 Difference]: Finished difference Result 1682 states and 2415 transitions. [2023-12-19 08:50:58,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-19 08:50:58,383 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 4.310344827586207) internal successors, (125), 28 states have internal predecessors, (125), 6 states have call successors, (96), 4 states have call predecessors, (96), 7 states have return successors, (96), 6 states have call predecessors, (96), 6 states have call successors, (96) Word has length 295 [2023-12-19 08:50:58,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:50:58,388 INFO L225 Difference]: With dead ends: 1682 [2023-12-19 08:50:58,388 INFO L226 Difference]: Without dead ends: 1421 [2023-12-19 08:50:58,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3911 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2104, Invalid=9026, Unknown=0, NotChecked=0, Total=11130 [2023-12-19 08:50:58,391 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1728 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 3890 mSolverCounterSat, 2469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 6359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2469 IncrementalHoareTripleChecker+Valid, 3890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:50:58,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 2194 Invalid, 6359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2469 Valid, 3890 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 08:50:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2023-12-19 08:50:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 690. [2023-12-19 08:50:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 510 states have (on average 1.4137254901960785) internal successors, (721), 515 states have internal predecessors, (721), 152 states have call successors, (152), 27 states have call predecessors, (152), 27 states have return successors, (152), 147 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-19 08:50:58,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1025 transitions. [2023-12-19 08:50:58,541 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1025 transitions. Word has length 295 [2023-12-19 08:50:58,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:50:58,541 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1025 transitions. [2023-12-19 08:50:58,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 4.310344827586207) internal successors, (125), 28 states have internal predecessors, (125), 6 states have call successors, (96), 4 states have call predecessors, (96), 7 states have return successors, (96), 6 states have call predecessors, (96), 6 states have call successors, (96) [2023-12-19 08:50:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1025 transitions. [2023-12-19 08:50:58,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 08:50:58,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:50:58,544 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 08:50:58,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-19 08:50:58,744 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 08:50:58,745 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:50:58,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:50:58,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1762434147, now seen corresponding path program 1 times [2023-12-19 08:50:58,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:50:58,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906202294] [2023-12-19 08:50:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:50:58,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:50:58,763 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:50:58,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14061617] [2023-12-19 08:50:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:50:58,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:50:58,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:50:58,765 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 08:50:58,777 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 08:50:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:50:58,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 08:50:58,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:51:22,301 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 08:51:22,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:51:28,897 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 08:51:28,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:51:28,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906202294] [2023-12-19 08:51:28,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:51:28,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14061617] [2023-12-19 08:51:28,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14061617] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:51:28,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:51:28,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 25 [2023-12-19 08:51:28,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627154622] [2023-12-19 08:51:28,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:51:28,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:51:28,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:51:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:51:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2023-12-19 08:51:28,899 INFO L87 Difference]: Start difference. First operand 690 states and 1025 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 08:51:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:51:31,805 INFO L93 Difference]: Finished difference Result 1378 states and 2004 transitions. [2023-12-19 08:51:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 08:51:31,806 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 08:51:31,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:51:31,809 INFO L225 Difference]: With dead ends: 1378 [2023-12-19 08:51:31,809 INFO L226 Difference]: Without dead ends: 997 [2023-12-19 08:51:31,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=257, Invalid=1003, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 08:51:31,811 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 510 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 08:51:31,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 929 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 08:51:31,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-19 08:51:31,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 747. [2023-12-19 08:51:31,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 567 states have (on average 1.4426807760141094) internal successors, (818), 572 states have internal predecessors, (818), 152 states have call successors, (152), 27 states have call predecessors, (152), 27 states have return successors, (152), 147 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-19 08:51:31,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1122 transitions. [2023-12-19 08:51:31,938 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1122 transitions. Word has length 295 [2023-12-19 08:51:31,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:51:31,938 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1122 transitions. [2023-12-19 08:51:31,939 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 08:51:31,939 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1122 transitions. [2023-12-19 08:51:31,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 08:51:31,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:51:31,940 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 08:51:31,949 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 08:51:32,140 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 08:51:32,141 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:51:32,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:51:32,142 INFO L85 PathProgramCache]: Analyzing trace with hash -43004187, now seen corresponding path program 1 times [2023-12-19 08:51:32,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:51:32,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77821392] [2023-12-19 08:51:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:51:32,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:51:32,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:51:32,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757498273] [2023-12-19 08:51:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:51:32,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:51:32,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:51:32,171 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 08:51:32,172 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 08:51:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:51:32,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 72 conjunts are in the unsatisfiable core [2023-12-19 08:51:32,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:52:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1466 proven. 996 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2023-12-19 08:52:07,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:52:16,178 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 08:52:16,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:52:16,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77821392] [2023-12-19 08:52:16,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:52:16,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757498273] [2023-12-19 08:52:16,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757498273] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:52:16,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:52:16,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [41] total 50 [2023-12-19 08:52:16,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171349946] [2023-12-19 08:52:16,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:52:16,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 08:52:16,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:52:16,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 08:52:16,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=1959, Unknown=0, NotChecked=0, Total=2450 [2023-12-19 08:52:16,181 INFO L87 Difference]: Start difference. First operand 747 states and 1122 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 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 08:52:40,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:52:40,749 INFO L93 Difference]: Finished difference Result 1812 states and 2676 transitions. [2023-12-19 08:52:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 08:52:40,750 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 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 08:52:40,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:52:40,755 INFO L225 Difference]: With dead ends: 1812 [2023-12-19 08:52:40,755 INFO L226 Difference]: Without dead ends: 1408 [2023-12-19 08:52:40,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=764, Invalid=3928, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 08:52:40,757 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 481 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 08:52:40,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1147 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 08:52:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2023-12-19 08:52:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 747. [2023-12-19 08:52:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 567 states have (on average 1.4462081128747795) internal successors, (820), 572 states have internal predecessors, (820), 152 states have call successors, (152), 27 states have call predecessors, (152), 27 states have return successors, (152), 147 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-19 08:52:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1124 transitions. [2023-12-19 08:52:40,891 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1124 transitions. Word has length 295 [2023-12-19 08:52:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:52:40,892 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1124 transitions. [2023-12-19 08:52:40,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 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 08:52:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1124 transitions. [2023-12-19 08:52:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 08:52:40,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:52:40,893 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 08:52:40,912 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 08:52:41,104 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 08:52:41,105 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:52:41,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:52:41,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1747562910, now seen corresponding path program 1 times [2023-12-19 08:52:41,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:52:41,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813974019] [2023-12-19 08:52:41,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:52:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:52:41,134 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:52:41,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641055610] [2023-12-19 08:52:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:52:41,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:52:41,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:52:41,136 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 08:52:41,138 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 08:52:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:52:41,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 08:52:41,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:52:41,885 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 08:52:41,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:52:42,145 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 08:52:42,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:52:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813974019] [2023-12-19 08:52:42,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:52:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641055610] [2023-12-19 08:52:42,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641055610] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:52:42,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:52:42,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-12-19 08:52:42,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325019522] [2023-12-19 08:52:42,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:52:42,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 08:52:42,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:52:42,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 08:52:42,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-12-19 08:52:42,147 INFO L87 Difference]: Start difference. First operand 747 states and 1124 transitions. Second operand has 15 states, 14 states have (on average 6.928571428571429) internal successors, (97), 15 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 08:52:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:52:43,091 INFO L93 Difference]: Finished difference Result 1349 states and 2006 transitions. [2023-12-19 08:52:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 08:52:43,092 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.928571428571429) internal successors, (97), 15 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 295 [2023-12-19 08:52:43,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:52:43,095 INFO L225 Difference]: With dead ends: 1349 [2023-12-19 08:52:43,095 INFO L226 Difference]: Without dead ends: 836 [2023-12-19 08:52:43,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 577 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 08:52:43,098 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 964 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 08:52:43,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 973 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 08:52:43,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2023-12-19 08:52:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 744. [2023-12-19 08:52:43,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 564 states have (on average 1.4450354609929077) internal successors, (815), 569 states have internal predecessors, (815), 152 states have call successors, (152), 27 states have call predecessors, (152), 27 states have return successors, (152), 147 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-19 08:52:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1119 transitions. [2023-12-19 08:52:43,242 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1119 transitions. Word has length 295 [2023-12-19 08:52:43,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:52:43,242 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1119 transitions. [2023-12-19 08:52:43,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.928571428571429) internal successors, (97), 15 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 08:52:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1119 transitions. [2023-12-19 08:52:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 08:52:43,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:52:43,244 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 08:52:43,252 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 08:52:43,450 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 08:52:43,451 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:52:43,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:52:43,451 INFO L85 PathProgramCache]: Analyzing trace with hash -940736152, now seen corresponding path program 1 times [2023-12-19 08:52:43,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:52:43,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538900051] [2023-12-19 08:52:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:52:43,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:52:43,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:52:43,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283606377] [2023-12-19 08:52:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:52:43,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:52:43,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:52:43,469 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 08:52:43,488 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 08:52:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:52:43,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 08:52:43,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:52:43,623 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 08:52:43,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:52:43,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:52:43,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538900051] [2023-12-19 08:52:43,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:52:43,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283606377] [2023-12-19 08:52:43,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283606377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:52:43,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:52:43,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 08:52:43,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583286352] [2023-12-19 08:52:43,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:52:43,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:52:43,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:52:43,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:52:43,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:52:43,625 INFO L87 Difference]: Start difference. First operand 744 states and 1119 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 08:52:43,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:52:43,783 INFO L93 Difference]: Finished difference Result 1161 states and 1710 transitions. [2023-12-19 08:52:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 08:52:43,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 08:52:43,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:52:43,786 INFO L225 Difference]: With dead ends: 1161 [2023-12-19 08:52:43,786 INFO L226 Difference]: Without dead ends: 691 [2023-12-19 08:52:43,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 292 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 08:52:43,787 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 117 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:52:43,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 525 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:52:43,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-12-19 08:52:43,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 597. [2023-12-19 08:52:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 431 states have (on average 1.3874709976798143) internal successors, (598), 433 states have internal predecessors, (598), 140 states have call successors, (140), 25 states have call predecessors, (140), 25 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-19 08:52:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 878 transitions. [2023-12-19 08:52:43,905 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 878 transitions. Word has length 295 [2023-12-19 08:52:43,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:52:43,906 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 878 transitions. [2023-12-19 08:52:43,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 08:52:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 878 transitions. [2023-12-19 08:52:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 08:52:43,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:52:43,907 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 08:52:43,913 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 08:52:44,113 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 08:52:44,114 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:52:44,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:52:44,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1070313576, now seen corresponding path program 1 times [2023-12-19 08:52:44,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:52:44,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696675457] [2023-12-19 08:52:44,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:52:44,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:52:44,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:52:44,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165298026] [2023-12-19 08:52:44,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:52:44,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:52:44,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:52:44,150 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 08:52:44,165 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 08:52:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:52:44,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 08:52:44,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:52:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1347 proven. 381 refuted. 0 times theorem prover too weak. 2784 trivial. 0 not checked. [2023-12-19 08:52:47,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:52:52,138 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 08:52:52,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:52:52,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696675457] [2023-12-19 08:52:52,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:52:52,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165298026] [2023-12-19 08:52:52,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165298026] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:52:52,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:52:52,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 26 [2023-12-19 08:52:52,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848081545] [2023-12-19 08:52:52,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:52:52,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:52:52,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:52:52,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:52:52,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-12-19 08:52:52,141 INFO L87 Difference]: Start difference. First operand 597 states and 878 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 08:52:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:52:53,512 INFO L93 Difference]: Finished difference Result 967 states and 1419 transitions. [2023-12-19 08:52:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 08:52:53,513 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 08:52:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:52:53,515 INFO L225 Difference]: With dead ends: 967 [2023-12-19 08:52:53,515 INFO L226 Difference]: Without dead ends: 704 [2023-12-19 08:52:53,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 08:52:53,517 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 472 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 08:52:53,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 807 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 08:52:53,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-12-19 08:52:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 646. [2023-12-19 08:52:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 480 states have (on average 1.4125) internal successors, (678), 482 states have internal predecessors, (678), 140 states have call successors, (140), 25 states have call predecessors, (140), 25 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-19 08:52:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 958 transitions. [2023-12-19 08:52:53,652 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 958 transitions. Word has length 295 [2023-12-19 08:52:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:52:53,653 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 958 transitions. [2023-12-19 08:52:53,653 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 08:52:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 958 transitions. [2023-12-19 08:52:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 08:52:53,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:52:53,654 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 08:52:53,663 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 08:52:53,863 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 08:52:53,863 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:52:53,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:52:53,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1809602524, now seen corresponding path program 1 times [2023-12-19 08:52:53,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:52:53,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590338542] [2023-12-19 08:52:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:52:53,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:52:53,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:52:53,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459045969] [2023-12-19 08:52:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:52:53,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:52:53,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:52:53,887 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:52:53,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 08:52:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:52:54,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 08:52:54,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:52:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 325 proven. 402 refuted. 0 times theorem prover too weak. 3785 trivial. 0 not checked. [2023-12-19 08:52:58,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:53:04,119 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 08:53:04,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:53:04,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590338542] [2023-12-19 08:53:04,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:53:04,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459045969] [2023-12-19 08:53:04,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459045969] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:53:04,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:53:04,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 26 [2023-12-19 08:53:04,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85779581] [2023-12-19 08:53:04,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:53:04,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:53:04,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:53:04,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:53:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-12-19 08:53:04,121 INFO L87 Difference]: Start difference. First operand 646 states and 958 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 08:53:05,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:53:05,408 INFO L93 Difference]: Finished difference Result 1222 states and 1802 transitions. [2023-12-19 08:53:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 08:53:05,409 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 08:53:05,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:53:05,411 INFO L225 Difference]: With dead ends: 1222 [2023-12-19 08:53:05,411 INFO L226 Difference]: Without dead ends: 852 [2023-12-19 08:53:05,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 08:53:05,413 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 478 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 08:53:05,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 854 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 08:53:05,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-12-19 08:53:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 652. [2023-12-19 08:53:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 486 states have (on average 1.4074074074074074) internal successors, (684), 488 states have internal predecessors, (684), 140 states have call successors, (140), 25 states have call predecessors, (140), 25 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-19 08:53:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 964 transitions. [2023-12-19 08:53:05,533 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 964 transitions. Word has length 295 [2023-12-19 08:53:05,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:53:05,534 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 964 transitions. [2023-12-19 08:53:05,534 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 08:53:05,534 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 964 transitions. [2023-12-19 08:53:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 08:53:05,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:53:05,535 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 08:53:05,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 08:53:05,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:53:05,743 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:53:05,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:53:05,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1289168294, now seen corresponding path program 1 times [2023-12-19 08:53:05,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:53:05,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542570323] [2023-12-19 08:53:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:53:05,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:53:05,763 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:53:05,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170819228] [2023-12-19 08:53:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:53:05,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:53:05,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:53:05,765 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:53:05,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 08:53:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:53:05,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 08:53:05,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:53:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1347 proven. 381 refuted. 0 times theorem prover too weak. 2784 trivial. 0 not checked. [2023-12-19 08:53:08,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:53:15,096 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 08:53:15,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:53:15,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542570323] [2023-12-19 08:53:15,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:53:15,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170819228] [2023-12-19 08:53:15,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170819228] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:53:15,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:53:15,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 26 [2023-12-19 08:53:15,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786038400] [2023-12-19 08:53:15,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:53:15,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:53:15,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:53:15,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:53:15,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-12-19 08:53:15,098 INFO L87 Difference]: Start difference. First operand 652 states and 964 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 08:53:16,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:53:16,619 INFO L93 Difference]: Finished difference Result 1001 states and 1467 transitions. [2023-12-19 08:53:16,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 08:53:16,620 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 08:53:16,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:53:16,623 INFO L225 Difference]: With dead ends: 1001 [2023-12-19 08:53:16,623 INFO L226 Difference]: Without dead ends: 710 [2023-12-19 08:53:16,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 08:53:16,624 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 414 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 08:53:16,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 840 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 08:53:16,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-12-19 08:53:16,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 634. [2023-12-19 08:53:16,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 468 states have (on average 1.393162393162393) internal successors, (652), 470 states have internal predecessors, (652), 140 states have call successors, (140), 25 states have call predecessors, (140), 25 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-19 08:53:16,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 932 transitions. [2023-12-19 08:53:16,743 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 932 transitions. Word has length 295 [2023-12-19 08:53:16,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:53:16,744 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 932 transitions. [2023-12-19 08:53:16,744 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 08:53:16,744 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 932 transitions. [2023-12-19 08:53:16,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2023-12-19 08:53:16,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:53:16,745 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 08:53:16,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 08:53:16,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:53:16,952 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:53:16,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:53:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2028457242, now seen corresponding path program 1 times [2023-12-19 08:53:16,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:53:16,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941061543] [2023-12-19 08:53:16,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:53:16,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:53:16,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:53:16,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538020354] [2023-12-19 08:53:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:53:16,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:53:16,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:53:16,971 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:53:16,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 08:53:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:53:17,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 08:53:17,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:53:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 325 proven. 402 refuted. 0 times theorem prover too weak. 3785 trivial. 0 not checked. [2023-12-19 08:53:21,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:53:26,928 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 08:53:26,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:53:26,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941061543] [2023-12-19 08:53:26,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:53:26,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538020354] [2023-12-19 08:53:26,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538020354] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:53:26,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:53:26,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 26 [2023-12-19 08:53:26,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832948172] [2023-12-19 08:53:26,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:53:26,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 08:53:26,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:53:26,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 08:53:26,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-12-19 08:53:26,930 INFO L87 Difference]: Start difference. First operand 634 states and 932 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 08:53:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:53:28,243 INFO L93 Difference]: Finished difference Result 1228 states and 1804 transitions. [2023-12-19 08:53:28,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 08:53:28,243 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 08:53:28,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:53:28,255 INFO L225 Difference]: With dead ends: 1228 [2023-12-19 08:53:28,255 INFO L226 Difference]: Without dead ends: 852 [2023-12-19 08:53:28,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 08:53:28,256 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 337 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 08:53:28,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1016 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 08:53:28,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-12-19 08:53:28,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 602. [2023-12-19 08:53:28,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 436 states have (on average 1.3738532110091743) internal successors, (599), 438 states have internal predecessors, (599), 140 states have call successors, (140), 25 states have call predecessors, (140), 25 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-19 08:53:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 879 transitions. [2023-12-19 08:53:28,383 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 879 transitions. Word has length 295 [2023-12-19 08:53:28,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:53:28,383 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 879 transitions. [2023-12-19 08:53:28,384 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 08:53:28,384 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 879 transitions. [2023-12-19 08:53:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-19 08:53:28,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:53:28,386 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 08:53:28,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 08:53:28,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:53:28,593 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:53:28,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:53:28,594 INFO L85 PathProgramCache]: Analyzing trace with hash -714424565, now seen corresponding path program 1 times [2023-12-19 08:53:28,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:53:28,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727059169] [2023-12-19 08:53:28,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:53:28,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:53:28,612 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:53:28,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336917204] [2023-12-19 08:53:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:53:28,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:53:28,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:53:28,613 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:53:28,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 08:53:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:53:28,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-19 08:53:28,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:53:44,903 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 08:53:44,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:53:52,008 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 08:53:52,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:53:52,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727059169] [2023-12-19 08:53:52,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:53:52,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336917204] [2023-12-19 08:53:52,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336917204] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 08:53:52,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 08:53:52,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 27 [2023-12-19 08:53:52,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555881807] [2023-12-19 08:53:52,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:53:52,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 08:53:52,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:53:52,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 08:53:52,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2023-12-19 08:53:52,011 INFO L87 Difference]: Start difference. First operand 602 states and 879 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 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 08:53:54,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:53:54,069 INFO L93 Difference]: Finished difference Result 1241 states and 1792 transitions. [2023-12-19 08:53:54,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 08:53:54,071 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 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 296 [2023-12-19 08:53:54,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:53:54,074 INFO L225 Difference]: With dead ends: 1241 [2023-12-19 08:53:54,074 INFO L226 Difference]: Without dead ends: 868 [2023-12-19 08:53:54,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=292, Invalid=1040, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 08:53:54,075 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 805 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 08:53:54,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 747 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 08:53:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2023-12-19 08:53:54,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 540. [2023-12-19 08:53:54,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 374 states have (on average 1.3262032085561497) internal successors, (496), 376 states have internal predecessors, (496), 140 states have call successors, (140), 25 states have call predecessors, (140), 25 states have return successors, (140), 138 states have call predecessors, (140), 140 states have call successors, (140) [2023-12-19 08:53:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 776 transitions. [2023-12-19 08:53:54,194 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 776 transitions. Word has length 296 [2023-12-19 08:53:54,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:53:54,194 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 776 transitions. [2023-12-19 08:53:54,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 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 08:53:54,194 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 776 transitions. [2023-12-19 08:53:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-12-19 08:53:54,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:53:54,196 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, 1] [2023-12-19 08:53:54,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-19 08:53:54,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:53:54,396 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:53:54,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:53:54,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1801352162, now seen corresponding path program 1 times [2023-12-19 08:53:54,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:53:54,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765384454] [2023-12-19 08:53:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:53:54,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:53:54,413 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:53:54,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325532766] [2023-12-19 08:53:54,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:53:54,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:53:54,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:53:54,414 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 08:53:54,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 08:53:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:53:54,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 08:53:54,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:54:59,189 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 08:54:59,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 09:03:09,230 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 09:03:09,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-19 09:03:09,273 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 09:03:09,273 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 09:03:09,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 09:03:09,452 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 298 with TraceHistMax 48,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-29-2-4-4-3-3-2-3-2-4-4-4-4-4-4-4-4-3-3-3-2-2-2-2-1 context. [2023-12-19 09:03:09,458 INFO L445 BasicCegarLoop]: Path program histogram: [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 09:03:09,460 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 09:03:09,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 09:03:09 BoogieIcfgContainer [2023-12-19 09:03:09,461 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 09:03:09,461 INFO L158 Benchmark]: Toolchain (without parser) took 855676.20ms. Allocated memory was 321.9MB in the beginning and 973.1MB in the end (delta: 651.2MB). Free memory was 270.5MB in the beginning and 404.9MB in the end (delta: -134.4MB). Peak memory consumption was 603.2MB. Max. memory is 8.0GB. [2023-12-19 09:03:09,462 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 144.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 09:03:09,462 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.17ms. Allocated memory is still 321.9MB. Free memory was 270.2MB in the beginning and 253.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-19 09:03:09,462 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.91ms. Allocated memory is still 321.9MB. Free memory was 253.0MB in the beginning and 247.1MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-19 09:03:09,462 INFO L158 Benchmark]: Boogie Preprocessor took 55.39ms. Allocated memory is still 321.9MB. Free memory was 247.1MB in the beginning and 240.1MB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-19 09:03:09,462 INFO L158 Benchmark]: RCFGBuilder took 645.36ms. Allocated memory is still 321.9MB. Free memory was 240.1MB in the beginning and 266.9MB in the end (delta: -26.8MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-19 09:03:09,463 INFO L158 Benchmark]: TraceAbstraction took 854639.42ms. Allocated memory was 321.9MB in the beginning and 973.1MB in the end (delta: 651.2MB). Free memory was 266.4MB in the beginning and 404.9MB in the end (delta: -138.5MB). Peak memory consumption was 599.0MB. Max. memory is 8.0GB. [2023-12-19 09:03:09,463 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 194.0MB. Free memory is still 144.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 264.17ms. Allocated memory is still 321.9MB. Free memory was 270.2MB in the beginning and 253.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.91ms. Allocated memory is still 321.9MB. Free memory was 253.0MB in the beginning and 247.1MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.39ms. Allocated memory is still 321.9MB. Free memory was 247.1MB in the beginning and 240.1MB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 645.36ms. Allocated memory is still 321.9MB. Free memory was 240.1MB in the beginning and 266.9MB in the end (delta: -26.8MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 854639.42ms. Allocated memory was 321.9MB in the beginning and 973.1MB in the end (delta: 651.2MB). Free memory was 266.4MB in the beginning and 404.9MB in the end (delta: -138.5MB). Peak memory consumption was 599.0MB. 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 298 with TraceHistMax 48,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-29-2-4-4-3-3-2-3-2-4-4-4-4-4-4-4-4-3-3-3-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 121 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 854.6s, OverallIterations: 23, TraceHistogramMax: 48, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 78.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14862 SdHoareTripleChecker+Valid, 23.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14674 mSDsluCounter, 19447 SdHoareTripleChecker+Invalid, 21.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15092 mSDsCounter, 5215 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16718 IncrementalHoareTripleChecker+Invalid, 21933 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5215 mSolverCounterUnsat, 4355 mSDtfsCounter, 16718 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12123 GetRequests, 11371 SyntacticMatches, 2 SemanticMatches, 750 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11556 ImplicationChecksByTransitivity, 90.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=803occurred in iteration=7, InterpolantAutomatonStates: 468, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 22 MinimizatonAttempts, 6220 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 209.2s InterpolantComputationTime, 6471 NumberOfCodeBlocks, 6471 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 11728 ConstructedInterpolants, 5 QuantifiedInterpolants, 158000 SizeOfPredicates, 430 NumberOfNonLiveVariables, 14522 ConjunctsInSsa, 490 ConjunctsInUnsatCore, 40 InterpolantComputations, 13 PerfectInterpolantSequences, 173406/180480 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