/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_normal_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 10:19:07,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 10:19:07,690 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 10:19:07,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 10:19:07,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 10:19:07,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 10:19:07,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 10:19:07,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 10:19:07,721 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 10:19:07,724 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 10:19:07,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 10:19:07,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 10:19:07,725 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 10:19:07,726 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 10:19:07,727 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 10:19:07,727 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 10:19:07,727 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 10:19:07,727 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 10:19:07,728 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 10:19:07,728 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 10:19:07,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 10:19:07,729 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 10:19:07,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 10:19:07,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 10:19:07,729 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 10:19:07,729 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 10:19:07,729 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 10:19:07,730 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 10:19:07,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 10:19:07,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 10:19:07,731 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 10:19:07,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 10:19:07,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 10:19:07,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 10:19:07,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 10:19:07,732 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 10:19:07,732 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 10:19:07,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 10:19:07,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 10:19:07,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 10:19:07,732 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 10:19:07,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 10:19:07,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 10:19:07,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 10:19:07,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 10:19:07,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 10:19:07,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 10:19:07,954 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 10:19:07,954 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 10:19:07,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-34.i [2023-12-19 10:19:08,993 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 10:19:09,170 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 10:19:09,170 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-34.i [2023-12-19 10:19:09,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d47b6fe/b72df31e232f4bf595de4fd762b44d2b/FLAG4a1bfe9a4 [2023-12-19 10:19:09,199 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d47b6fe/b72df31e232f4bf595de4fd762b44d2b [2023-12-19 10:19:09,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 10:19:09,202 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 10:19:09,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 10:19:09,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 10:19:09,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 10:19:09,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e24a3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09, skipping insertion in model container [2023-12-19 10:19:09,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 10:19:09,383 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_normal_file-34.i[913,926] [2023-12-19 10:19:09,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 10:19:09,438 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 10:19:09,447 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_normal_file-34.i[913,926] [2023-12-19 10:19:09,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 10:19:09,480 INFO L206 MainTranslator]: Completed translation [2023-12-19 10:19:09,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09 WrapperNode [2023-12-19 10:19:09,481 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 10:19:09,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 10:19:09,482 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 10:19:09,482 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 10:19:09,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,494 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,525 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 176 [2023-12-19 10:19:09,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 10:19:09,528 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 10:19:09,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 10:19:09,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 10:19:09,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,569 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 10:19:09,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,569 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,575 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 10:19:09,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 10:19:09,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 10:19:09,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 10:19:09,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (1/1) ... [2023-12-19 10:19:09,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 10:19:09,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:19:09,625 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 10:19:09,627 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 10:19:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 10:19:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 10:19:09,646 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 10:19:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 10:19:09,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 10:19:09,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 10:19:09,703 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 10:19:09,705 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 10:19:10,062 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 10:19:10,093 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 10:19:10,093 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 10:19:10,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:19:10 BoogieIcfgContainer [2023-12-19 10:19:10,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 10:19:10,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 10:19:10,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 10:19:10,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 10:19:10,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 10:19:09" (1/3) ... [2023-12-19 10:19:10,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2184d7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:19:10, skipping insertion in model container [2023-12-19 10:19:10,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:19:09" (2/3) ... [2023-12-19 10:19:10,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2184d7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:19:10, skipping insertion in model container [2023-12-19 10:19:10,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:19:10" (3/3) ... [2023-12-19 10:19:10,100 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-34.i [2023-12-19 10:19:10,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 10:19:10,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 10:19:10,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 10:19:10,146 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;@5d610e9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 10:19:10,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 10:19:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 45 states have (on average 1.6) internal successors, (72), 46 states have internal predecessors, (72), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 10:19:10,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 10:19:10,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:19:10,159 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:19:10,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:19:10,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:19:10,163 INFO L85 PathProgramCache]: Analyzing trace with hash -891774575, now seen corresponding path program 1 times [2023-12-19 10:19:10,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:19:10,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281412529] [2023-12-19 10:19:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:19:10,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:19:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:19:10,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:19:10,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281412529] [2023-12-19 10:19:10,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 10:19:10,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954947946] [2023-12-19 10:19:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:19:10,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:19:10,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:19:10,355 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 10:19:10,374 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 10:19:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:19:10,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 10:19:10,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:19:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-19 10:19:10,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:19:10,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954947946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:19:10,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:19:10,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 10:19:10,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026704541] [2023-12-19 10:19:10,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:19:10,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 10:19:10,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:19:10,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 10:19:10,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 10:19:10,545 INFO L87 Difference]: Start difference. First operand has 61 states, 45 states have (on average 1.6) internal successors, (72), 46 states have internal predecessors, (72), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 10:19:10,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:19:10,582 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2023-12-19 10:19:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 10:19:10,584 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 90 [2023-12-19 10:19:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:19:10,591 INFO L225 Difference]: With dead ends: 119 [2023-12-19 10:19:10,591 INFO L226 Difference]: Without dead ends: 59 [2023-12-19 10:19:10,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 10:19:10,599 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 10:19:10,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 10:19:10,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-19 10:19:10,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-19 10:19:10,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 44 states have internal predecessors, (67), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 10:19:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 93 transitions. [2023-12-19 10:19:10,638 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 93 transitions. Word has length 90 [2023-12-19 10:19:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:19:10,638 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 93 transitions. [2023-12-19 10:19:10,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 10:19:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 93 transitions. [2023-12-19 10:19:10,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 10:19:10,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:19:10,644 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:19:10,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 10:19:10,852 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 10:19:10,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:19:10,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:19:10,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1865726257, now seen corresponding path program 1 times [2023-12-19 10:19:10,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:19:10,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537559997] [2023-12-19 10:19:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:19:10,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:19:10,916 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:19:10,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507536284] [2023-12-19 10:19:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:19:10,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:19:10,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:19:10,921 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 10:19:10,927 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 10:19:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:19:11,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 10:19:11,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:19:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:19:11,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:19:11,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:19:11,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537559997] [2023-12-19 10:19:11,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:19:11,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507536284] [2023-12-19 10:19:11,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507536284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:19:11,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:19:11,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 10:19:11,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777141141] [2023-12-19 10:19:11,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:19:11,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 10:19:11,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:19:11,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 10:19:11,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 10:19:11,192 INFO L87 Difference]: Start difference. First operand 59 states and 93 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:19:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:19:11,367 INFO L93 Difference]: Finished difference Result 176 states and 276 transitions. [2023-12-19 10:19:11,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 10:19:11,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 90 [2023-12-19 10:19:11,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:19:11,371 INFO L225 Difference]: With dead ends: 176 [2023-12-19 10:19:11,372 INFO L226 Difference]: Without dead ends: 118 [2023-12-19 10:19:11,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 10:19:11,374 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 117 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:19:11,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 325 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 10:19:11,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-19 10:19:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 61. [2023-12-19 10:19:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.5) internal successors, (69), 46 states have internal predecessors, (69), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 10:19:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 95 transitions. [2023-12-19 10:19:11,396 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 95 transitions. Word has length 90 [2023-12-19 10:19:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:19:11,399 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 95 transitions. [2023-12-19 10:19:11,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:19:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 95 transitions. [2023-12-19 10:19:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 10:19:11,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:19:11,417 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:19:11,424 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 10:19:11,617 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 10:19:11,618 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:19:11,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:19:11,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1740875413, now seen corresponding path program 1 times [2023-12-19 10:19:11,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:19:11,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569162350] [2023-12-19 10:19:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:19:11,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:19:11,641 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:19:11,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402311519] [2023-12-19 10:19:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:19:11,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:19:11,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:19:11,646 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 10:19:11,653 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 10:19:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:19:11,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 10:19:11,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:19:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:19:11,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:19:11,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:19:11,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569162350] [2023-12-19 10:19:11,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:19:11,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402311519] [2023-12-19 10:19:11,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402311519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:19:11,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:19:11,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 10:19:11,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387912802] [2023-12-19 10:19:11,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:19:11,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 10:19:11,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:19:11,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 10:19:11,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 10:19:11,839 INFO L87 Difference]: Start difference. First operand 61 states and 95 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:19:11,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:19:11,904 INFO L93 Difference]: Finished difference Result 210 states and 327 transitions. [2023-12-19 10:19:11,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 10:19:11,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2023-12-19 10:19:11,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:19:11,906 INFO L225 Difference]: With dead ends: 210 [2023-12-19 10:19:11,906 INFO L226 Difference]: Without dead ends: 150 [2023-12-19 10:19:11,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 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 10:19:11,907 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 113 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 10:19:11,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 295 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 10:19:11,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-19 10:19:11,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 121. [2023-12-19 10:19:11,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.4891304347826086) internal successors, (137), 92 states have internal predecessors, (137), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 10:19:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 189 transitions. [2023-12-19 10:19:11,921 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 189 transitions. Word has length 91 [2023-12-19 10:19:11,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:19:11,921 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 189 transitions. [2023-12-19 10:19:11,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:19:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 189 transitions. [2023-12-19 10:19:11,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 10:19:11,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:19:11,922 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:19:11,934 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 10:19:12,129 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 10:19:12,129 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:19:12,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:19:12,130 INFO L85 PathProgramCache]: Analyzing trace with hash 926432231, now seen corresponding path program 1 times [2023-12-19 10:19:12,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:19:12,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068051767] [2023-12-19 10:19:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:19:12,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:19:12,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:19:12,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879254581] [2023-12-19 10:19:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:19:12,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:19:12,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:19:12,155 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 10:19:12,172 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 10:19:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:19:12,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-19 10:19:12,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:19:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 213 proven. 45 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-19 10:19:15,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 10:19:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:19:22,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:19:22,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068051767] [2023-12-19 10:19:22,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:19:22,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879254581] [2023-12-19 10:19:22,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879254581] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 10:19:22,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 10:19:22,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 26 [2023-12-19 10:19:22,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894611172] [2023-12-19 10:19:22,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:19:22,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 10:19:22,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:19:22,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 10:19:22,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2023-12-19 10:19:22,178 INFO L87 Difference]: Start difference. First operand 121 states and 189 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:19:35,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:19:35,399 INFO L93 Difference]: Finished difference Result 367 states and 559 transitions. [2023-12-19 10:19:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 10:19:35,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 10:19:35,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:19:35,402 INFO L225 Difference]: With dead ends: 367 [2023-12-19 10:19:35,402 INFO L226 Difference]: Without dead ends: 247 [2023-12-19 10:19:35,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 10:19:35,404 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 298 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-19 10:19:35,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 404 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-19 10:19:35,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-19 10:19:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 162. [2023-12-19 10:19:35,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 126 states have (on average 1.4523809523809523) internal successors, (183), 127 states have internal predecessors, (183), 31 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-19 10:19:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 245 transitions. [2023-12-19 10:19:35,420 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 245 transitions. Word has length 92 [2023-12-19 10:19:35,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:19:35,421 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 245 transitions. [2023-12-19 10:19:35,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:19:35,421 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 245 transitions. [2023-12-19 10:19:35,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 10:19:35,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:19:35,422 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:19:35,438 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 10:19:35,638 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 10:19:35,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:19:35,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:19:35,639 INFO L85 PathProgramCache]: Analyzing trace with hash 983690533, now seen corresponding path program 1 times [2023-12-19 10:19:35,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:19:35,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676122998] [2023-12-19 10:19:35,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:19:35,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:19:35,664 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:19:35,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284786780] [2023-12-19 10:19:35,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:19:35,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:19:35,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:19:35,666 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 10:19:35,668 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 10:19:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:19:35,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 10:19:35,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:19:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:19:39,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:19:39,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:19:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676122998] [2023-12-19 10:19:39,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:19:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284786780] [2023-12-19 10:19:39,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284786780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:19:39,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:19:39,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 10:19:39,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959691987] [2023-12-19 10:19:39,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:19:39,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 10:19:39,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:19:39,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 10:19:39,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 10:19:39,873 INFO L87 Difference]: Start difference. First operand 162 states and 245 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:19:45,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:19:45,626 INFO L93 Difference]: Finished difference Result 504 states and 755 transitions. [2023-12-19 10:19:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 10:19:45,627 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 10:19:45,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:19:45,630 INFO L225 Difference]: With dead ends: 504 [2023-12-19 10:19:45,630 INFO L226 Difference]: Without dead ends: 427 [2023-12-19 10:19:45,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 10:19:45,631 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 407 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 10:19:45,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 687 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 10:19:45,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-12-19 10:19:45,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 373. [2023-12-19 10:19:45,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 292 states have (on average 1.4349315068493151) internal successors, (419), 293 states have internal predecessors, (419), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-19 10:19:45,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 559 transitions. [2023-12-19 10:19:45,667 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 559 transitions. Word has length 92 [2023-12-19 10:19:45,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:19:45,670 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 559 transitions. [2023-12-19 10:19:45,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:19:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 559 transitions. [2023-12-19 10:19:45,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 10:19:45,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:19:45,671 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:19:45,677 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 10:19:45,877 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 10:19:45,878 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:19:45,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:19:45,878 INFO L85 PathProgramCache]: Analyzing trace with hash 117085605, now seen corresponding path program 1 times [2023-12-19 10:19:45,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:19:45,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555545783] [2023-12-19 10:19:45,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:19:45,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:19:45,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:19:45,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168676443] [2023-12-19 10:19:45,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:19:45,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:19:45,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:19:45,906 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 10:19:45,934 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 10:19:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:19:46,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 10:19:46,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:19:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 96 proven. 30 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-19 10:19:47,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 10:20:14,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:20:14,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555545783] [2023-12-19 10:20:14,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:20:14,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168676443] [2023-12-19 10:20:14,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168676443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 10:20:14,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 10:20:14,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-19 10:20:14,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858027451] [2023-12-19 10:20:14,791 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 10:20:14,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 10:20:14,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:20:14,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 10:20:14,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-12-19 10:20:14,793 INFO L87 Difference]: Start difference. First operand 373 states and 559 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 10:20:16,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:20:16,653 INFO L93 Difference]: Finished difference Result 1051 states and 1567 transitions. [2023-12-19 10:20:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 10:20:16,654 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2023-12-19 10:20:16,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:20:16,657 INFO L225 Difference]: With dead ends: 1051 [2023-12-19 10:20:16,658 INFO L226 Difference]: Without dead ends: 686 [2023-12-19 10:20:16,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 10:20:16,659 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 276 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 10:20:16,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 479 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 10:20:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-12-19 10:20:16,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 542. [2023-12-19 10:20:16,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 451 states have (on average 1.4368070953436807) internal successors, (648), 451 states have internal predecessors, (648), 78 states have call successors, (78), 12 states have call predecessors, (78), 12 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 10:20:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 804 transitions. [2023-12-19 10:20:16,711 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 804 transitions. Word has length 92 [2023-12-19 10:20:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:20:16,712 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 804 transitions. [2023-12-19 10:20:16,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 10:20:16,713 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 804 transitions. [2023-12-19 10:20:16,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 10:20:16,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:20:16,713 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:16,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 10:20:16,920 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 10:20:16,923 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:20:16,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:20:16,923 INFO L85 PathProgramCache]: Analyzing trace with hash 174343907, now seen corresponding path program 1 times [2023-12-19 10:20:16,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:20:16,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83440498] [2023-12-19 10:20:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:16,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:20:16,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:20:16,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242188738] [2023-12-19 10:20:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:16,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:20:16,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:20:16,940 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 10:20:16,942 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 10:20:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:20:17,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 10:20:17,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:20:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:20:21,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:20:21,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:20:21,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83440498] [2023-12-19 10:20:21,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:20:21,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242188738] [2023-12-19 10:20:21,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242188738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:20:21,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:20:21,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 10:20:21,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676677486] [2023-12-19 10:20:21,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:20:21,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 10:20:21,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:20:21,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 10:20:21,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 10:20:21,111 INFO L87 Difference]: Start difference. First operand 542 states and 804 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:20:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:20:25,563 INFO L93 Difference]: Finished difference Result 831 states and 1237 transitions. [2023-12-19 10:20:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 10:20:25,564 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 10:20:25,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:20:25,566 INFO L225 Difference]: With dead ends: 831 [2023-12-19 10:20:25,567 INFO L226 Difference]: Without dead ends: 613 [2023-12-19 10:20:25,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 10:20:25,568 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 321 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 10:20:25,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 570 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 10:20:25,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-19 10:20:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 544. [2023-12-19 10:20:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 453 states have (on average 1.434878587196468) internal successors, (650), 453 states have internal predecessors, (650), 78 states have call successors, (78), 12 states have call predecessors, (78), 12 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 10:20:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 806 transitions. [2023-12-19 10:20:25,596 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 806 transitions. Word has length 92 [2023-12-19 10:20:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:20:25,597 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 806 transitions. [2023-12-19 10:20:25,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:20:25,597 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 806 transitions. [2023-12-19 10:20:25,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 10:20:25,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:20:25,598 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:25,608 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 10:20:25,803 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 10:20:25,804 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:20:25,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:20:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1746939114, now seen corresponding path program 1 times [2023-12-19 10:20:25,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:20:25,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843525901] [2023-12-19 10:20:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:25,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:20:25,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:20:25,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856343915] [2023-12-19 10:20:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:25,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:20:25,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:20:25,819 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 10:20:25,824 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 10:20:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:20:26,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 10:20:26,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:20:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 198 proven. 39 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-19 10:20:26,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 10:20:34,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:20:34,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843525901] [2023-12-19 10:20:34,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:20:34,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856343915] [2023-12-19 10:20:34,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856343915] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 10:20:34,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 10:20:34,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-19 10:20:34,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860436809] [2023-12-19 10:20:34,639 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 10:20:34,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 10:20:34,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:20:34,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 10:20:34,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=336, Unknown=1, NotChecked=0, Total=420 [2023-12-19 10:20:34,640 INFO L87 Difference]: Start difference. First operand 544 states and 806 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 3 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 10:20:35,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:20:35,420 INFO L93 Difference]: Finished difference Result 1326 states and 1939 transitions. [2023-12-19 10:20:35,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 10:20:35,433 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 3 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 92 [2023-12-19 10:20:35,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:20:35,437 INFO L225 Difference]: With dead ends: 1326 [2023-12-19 10:20:35,437 INFO L226 Difference]: Without dead ends: 808 [2023-12-19 10:20:35,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=269, Invalid=990, Unknown=1, NotChecked=0, Total=1260 [2023-12-19 10:20:35,440 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 258 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 10:20:35,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 471 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 10:20:35,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-12-19 10:20:35,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 677. [2023-12-19 10:20:35,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 585 states have (on average 1.4273504273504274) internal successors, (835), 585 states have internal predecessors, (835), 78 states have call successors, (78), 13 states have call predecessors, (78), 13 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 10:20:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 991 transitions. [2023-12-19 10:20:35,490 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 991 transitions. Word has length 92 [2023-12-19 10:20:35,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:20:35,490 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 991 transitions. [2023-12-19 10:20:35,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 3 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 10:20:35,491 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 991 transitions. [2023-12-19 10:20:35,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 10:20:35,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:20:35,492 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:35,500 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 10:20:35,698 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 10:20:35,699 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:20:35,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:20:35,699 INFO L85 PathProgramCache]: Analyzing trace with hash 339626217, now seen corresponding path program 1 times [2023-12-19 10:20:35,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:20:35,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271186652] [2023-12-19 10:20:35,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:35,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:20:35,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:20:35,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768275738] [2023-12-19 10:20:35,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:35,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:20:35,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:20:35,721 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 10:20:35,748 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 10:20:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:20:36,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 10:20:36,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:20:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:20:36,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:20:36,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:20:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271186652] [2023-12-19 10:20:36,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:20:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768275738] [2023-12-19 10:20:36,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768275738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:20:36,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:20:36,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 10:20:36,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364094570] [2023-12-19 10:20:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:20:36,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 10:20:36,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:20:36,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 10:20:36,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 10:20:36,341 INFO L87 Difference]: Start difference. First operand 677 states and 991 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:20:36,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:20:36,490 INFO L93 Difference]: Finished difference Result 1140 states and 1672 transitions. [2023-12-19 10:20:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 10:20:36,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 10:20:36,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:20:36,495 INFO L225 Difference]: With dead ends: 1140 [2023-12-19 10:20:36,495 INFO L226 Difference]: Without dead ends: 647 [2023-12-19 10:20:36,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 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 10:20:36,500 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 63 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:20:36,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 256 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 10:20:36,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-12-19 10:20:36,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 611. [2023-12-19 10:20:36,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 519 states have (on average 1.4007707129094413) internal successors, (727), 519 states have internal predecessors, (727), 78 states have call successors, (78), 13 states have call predecessors, (78), 13 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 10:20:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 883 transitions. [2023-12-19 10:20:36,534 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 883 transitions. Word has length 92 [2023-12-19 10:20:36,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:20:36,534 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 883 transitions. [2023-12-19 10:20:36,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:20:36,534 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 883 transitions. [2023-12-19 10:20:36,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 10:20:36,540 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:20:36,540 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:36,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 10:20:36,746 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 10:20:36,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:20:36,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:20:36,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2031413085, now seen corresponding path program 1 times [2023-12-19 10:20:36,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:20:36,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646676424] [2023-12-19 10:20:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:36,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:20:36,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:20:36,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771447010] [2023-12-19 10:20:36,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:36,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:20:36,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:20:36,761 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 10:20:36,784 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 10:20:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:20:36,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 10:20:36,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:20:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:20:41,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:20:41,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:20:41,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646676424] [2023-12-19 10:20:41,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:20:41,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771447010] [2023-12-19 10:20:41,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771447010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:20:41,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:20:41,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 10:20:41,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214980741] [2023-12-19 10:20:41,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:20:41,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 10:20:41,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:20:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 10:20:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 10:20:41,662 INFO L87 Difference]: Start difference. First operand 611 states and 883 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:20:45,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:20:45,945 INFO L93 Difference]: Finished difference Result 1100 states and 1614 transitions. [2023-12-19 10:20:45,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 10:20:45,946 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 10:20:45,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:20:45,949 INFO L225 Difference]: With dead ends: 1100 [2023-12-19 10:20:45,949 INFO L226 Difference]: Without dead ends: 733 [2023-12-19 10:20:45,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 10:20:45,950 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 284 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 10:20:45,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 525 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 10:20:45,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2023-12-19 10:20:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 609. [2023-12-19 10:20:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 517 states have (on average 1.3984526112185687) internal successors, (723), 517 states have internal predecessors, (723), 78 states have call successors, (78), 13 states have call predecessors, (78), 13 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 10:20:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 879 transitions. [2023-12-19 10:20:45,978 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 879 transitions. Word has length 92 [2023-12-19 10:20:45,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:20:45,978 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 879 transitions. [2023-12-19 10:20:45,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:20:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 879 transitions. [2023-12-19 10:20:45,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 10:20:45,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:20:45,979 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:45,985 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 10:20:46,185 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 10:20:46,185 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:20:46,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:20:46,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1454207585, now seen corresponding path program 1 times [2023-12-19 10:20:46,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:20:46,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488955201] [2023-12-19 10:20:46,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:46,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:20:46,200 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:20:46,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17004458] [2023-12-19 10:20:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:46,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:20:46,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:20:46,202 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 10:20:46,203 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 10:20:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:20:46,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 10:20:46,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:20:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:20:51,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:20:51,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:20:51,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488955201] [2023-12-19 10:20:51,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:20:51,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17004458] [2023-12-19 10:20:51,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17004458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:20:51,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:20:51,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 10:20:51,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079407130] [2023-12-19 10:20:51,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:20:51,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 10:20:51,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:20:51,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 10:20:51,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 10:20:51,529 INFO L87 Difference]: Start difference. First operand 609 states and 879 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:20:57,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:20:57,557 INFO L93 Difference]: Finished difference Result 1096 states and 1606 transitions. [2023-12-19 10:20:57,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 10:20:57,558 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 10:20:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:20:57,560 INFO L225 Difference]: With dead ends: 1096 [2023-12-19 10:20:57,560 INFO L226 Difference]: Without dead ends: 707 [2023-12-19 10:20:57,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 10:20:57,561 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 212 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:20:57,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 687 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 10:20:57,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-12-19 10:20:57,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 605. [2023-12-19 10:20:57,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 513 states have (on average 1.3976608187134503) internal successors, (717), 513 states have internal predecessors, (717), 78 states have call successors, (78), 13 states have call predecessors, (78), 13 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 10:20:57,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 873 transitions. [2023-12-19 10:20:57,586 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 873 transitions. Word has length 92 [2023-12-19 10:20:57,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:20:57,587 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 873 transitions. [2023-12-19 10:20:57,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:20:57,587 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 873 transitions. [2023-12-19 10:20:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 10:20:57,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:20:57,588 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:57,595 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 10:20:57,795 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 10:20:57,798 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:20:57,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:20:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1540699464, now seen corresponding path program 1 times [2023-12-19 10:20:57,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:20:57,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244920150] [2023-12-19 10:20:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:57,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:20:57,812 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:20:57,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578279708] [2023-12-19 10:20:57,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:57,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:20:57,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:20:57,814 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 10:20:57,815 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 10:20:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:20:58,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 10:20:58,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:20:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:20:58,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:20:58,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:20:58,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244920150] [2023-12-19 10:20:58,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:20:58,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578279708] [2023-12-19 10:20:58,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578279708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:20:58,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:20:58,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 10:20:58,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216885749] [2023-12-19 10:20:58,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:20:58,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 10:20:58,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:20:58,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 10:20:58,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 10:20:58,894 INFO L87 Difference]: Start difference. First operand 605 states and 873 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:20:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:20:59,474 INFO L93 Difference]: Finished difference Result 884 states and 1288 transitions. [2023-12-19 10:20:59,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 10:20:59,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 10:20:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:20:59,477 INFO L225 Difference]: With dead ends: 884 [2023-12-19 10:20:59,477 INFO L226 Difference]: Without dead ends: 807 [2023-12-19 10:20:59,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 10:20:59,478 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 187 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 10:20:59,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 535 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 10:20:59,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2023-12-19 10:20:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 715. [2023-12-19 10:20:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 608 states have (on average 1.4095394736842106) internal successors, (857), 608 states have internal predecessors, (857), 91 states have call successors, (91), 15 states have call predecessors, (91), 15 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 10:20:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1039 transitions. [2023-12-19 10:20:59,511 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1039 transitions. Word has length 93 [2023-12-19 10:20:59,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:20:59,511 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 1039 transitions. [2023-12-19 10:20:59,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:20:59,512 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1039 transitions. [2023-12-19 10:20:59,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 10:20:59,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:20:59,512 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:59,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 10:20:59,718 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 10:20:59,719 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:20:59,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:20:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1597957766, now seen corresponding path program 1 times [2023-12-19 10:20:59,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:20:59,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508551005] [2023-12-19 10:20:59,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:59,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:20:59,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:20:59,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340276188] [2023-12-19 10:20:59,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:20:59,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:20:59,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:20:59,730 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 10:20:59,737 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 10:20:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:20:59,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 10:20:59,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:21:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:21:00,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:21:00,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:21:00,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508551005] [2023-12-19 10:21:00,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:21:00,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340276188] [2023-12-19 10:21:00,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340276188] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:21:00,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:21:00,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 10:21:00,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192330021] [2023-12-19 10:21:00,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:21:00,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 10:21:00,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:21:00,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 10:21:00,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 10:21:00,811 INFO L87 Difference]: Start difference. First operand 715 states and 1039 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:21:02,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:21:02,174 INFO L93 Difference]: Finished difference Result 1213 states and 1780 transitions. [2023-12-19 10:21:02,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 10:21:02,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 10:21:02,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:21:02,178 INFO L225 Difference]: With dead ends: 1213 [2023-12-19 10:21:02,178 INFO L226 Difference]: Without dead ends: 1035 [2023-12-19 10:21:02,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 10:21:02,179 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 493 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 10:21:02,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 817 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 10:21:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2023-12-19 10:21:02,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 880. [2023-12-19 10:21:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 743 states have (on average 1.4104979811574698) internal successors, (1048), 743 states have internal predecessors, (1048), 117 states have call successors, (117), 19 states have call predecessors, (117), 19 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-19 10:21:02,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1282 transitions. [2023-12-19 10:21:02,221 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1282 transitions. Word has length 93 [2023-12-19 10:21:02,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:21:02,221 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1282 transitions. [2023-12-19 10:21:02,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:21:02,222 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1282 transitions. [2023-12-19 10:21:02,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 10:21:02,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:21:02,223 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:02,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 10:21:02,429 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 10:21:02,430 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:21:02,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:21:02,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1733199478, now seen corresponding path program 1 times [2023-12-19 10:21:02,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:21:02,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068104550] [2023-12-19 10:21:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:02,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:21:02,440 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:21:02,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896378040] [2023-12-19 10:21:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:02,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:21:02,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:21:02,443 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 10:21:02,444 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 10:21:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:21:02,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 10:21:02,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:21:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-19 10:21:02,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 10:21:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 10:21:02,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:21:02,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068104550] [2023-12-19 10:21:02,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:21:02,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896378040] [2023-12-19 10:21:02,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896378040] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 10:21:02,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 10:21:02,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-19 10:21:02,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036663972] [2023-12-19 10:21:02,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 10:21:02,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 10:21:02,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:21:02,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 10:21:02,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 10:21:02,630 INFO L87 Difference]: Start difference. First operand 880 states and 1282 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-19 10:21:02,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:21:02,861 INFO L93 Difference]: Finished difference Result 1168 states and 1681 transitions. [2023-12-19 10:21:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 10:21:02,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2023-12-19 10:21:02,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:21:02,863 INFO L225 Difference]: With dead ends: 1168 [2023-12-19 10:21:02,863 INFO L226 Difference]: Without dead ends: 645 [2023-12-19 10:21:02,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-19 10:21:02,864 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 267 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:21:02,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 415 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 10:21:02,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-19 10:21:02,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 616. [2023-12-19 10:21:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 518 states have (on average 1.3803088803088803) internal successors, (715), 518 states have internal predecessors, (715), 78 states have call successors, (78), 19 states have call predecessors, (78), 19 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 10:21:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 871 transitions. [2023-12-19 10:21:02,891 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 871 transitions. Word has length 93 [2023-12-19 10:21:02,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:21:02,891 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 871 transitions. [2023-12-19 10:21:02,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-19 10:21:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 871 transitions. [2023-12-19 10:21:02,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 10:21:02,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:21:02,892 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:02,902 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 10:21:03,097 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 10:21:03,098 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:21:03,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:21:03,099 INFO L85 PathProgramCache]: Analyzing trace with hash 973419916, now seen corresponding path program 1 times [2023-12-19 10:21:03,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:21:03,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726220255] [2023-12-19 10:21:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:03,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:21:03,108 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:21:03,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078894391] [2023-12-19 10:21:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:03,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:21:03,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:21:03,111 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 10:21:03,132 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 10:21:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:21:03,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 10:21:03,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:21:04,346 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:21:04,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:21:04,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:21:04,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726220255] [2023-12-19 10:21:04,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:21:04,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078894391] [2023-12-19 10:21:04,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078894391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:21:04,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:21:04,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 10:21:04,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107189608] [2023-12-19 10:21:04,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:21:04,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 10:21:04,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:21:04,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 10:21:04,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 10:21:04,348 INFO L87 Difference]: Start difference. First operand 616 states and 871 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:21:05,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:21:05,014 INFO L93 Difference]: Finished difference Result 870 states and 1239 transitions. [2023-12-19 10:21:05,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 10:21:05,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 10:21:05,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:21:05,016 INFO L225 Difference]: With dead ends: 870 [2023-12-19 10:21:05,017 INFO L226 Difference]: Without dead ends: 708 [2023-12-19 10:21:05,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 10:21:05,018 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 169 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 10:21:05,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 427 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 10:21:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2023-12-19 10:21:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 616. [2023-12-19 10:21:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 518 states have (on average 1.3803088803088803) internal successors, (715), 518 states have internal predecessors, (715), 78 states have call successors, (78), 19 states have call predecessors, (78), 19 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-19 10:21:05,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 871 transitions. [2023-12-19 10:21:05,047 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 871 transitions. Word has length 93 [2023-12-19 10:21:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:21:05,047 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 871 transitions. [2023-12-19 10:21:05,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:21:05,048 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 871 transitions. [2023-12-19 10:21:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 10:21:05,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:21:05,048 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:05,070 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 10:21:05,254 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 10:21:05,254 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:21:05,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:21:05,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1030678218, now seen corresponding path program 1 times [2023-12-19 10:21:05,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:21:05,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715460529] [2023-12-19 10:21:05,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:05,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:21:05,263 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:21:05,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547807458] [2023-12-19 10:21:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:05,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:21:05,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:21:05,266 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 10:21:05,271 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 10:21:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:21:05,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 10:21:05,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:21:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:21:06,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:21:06,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:21:06,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715460529] [2023-12-19 10:21:06,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:21:06,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547807458] [2023-12-19 10:21:06,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547807458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:21:06,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:21:06,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 10:21:06,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165943720] [2023-12-19 10:21:06,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:21:06,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 10:21:06,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:21:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 10:21:06,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 10:21:06,362 INFO L87 Difference]: Start difference. First operand 616 states and 871 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:21:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:21:07,605 INFO L93 Difference]: Finished difference Result 1140 states and 1630 transitions. [2023-12-19 10:21:07,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 10:21:07,606 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 10:21:07,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:21:07,608 INFO L225 Difference]: With dead ends: 1140 [2023-12-19 10:21:07,609 INFO L226 Difference]: Without dead ends: 952 [2023-12-19 10:21:07,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 10:21:07,610 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 447 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 10:21:07,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 675 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 10:21:07,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-12-19 10:21:07,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 718. [2023-12-19 10:21:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 604 states have (on average 1.3791390728476822) internal successors, (833), 604 states have internal predecessors, (833), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-19 10:21:07,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1015 transitions. [2023-12-19 10:21:07,650 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1015 transitions. Word has length 93 [2023-12-19 10:21:07,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:21:07,650 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 1015 transitions. [2023-12-19 10:21:07,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:21:07,650 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1015 transitions. [2023-12-19 10:21:07,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 10:21:07,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:21:07,651 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:07,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 10:21:07,856 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 10:21:07,857 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:21:07,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:21:07,857 INFO L85 PathProgramCache]: Analyzing trace with hash 23148666, now seen corresponding path program 1 times [2023-12-19 10:21:07,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:21:07,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135208017] [2023-12-19 10:21:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:07,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:21:07,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:21:07,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913391286] [2023-12-19 10:21:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:07,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:21:07,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:21:07,867 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 10:21:07,884 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 10:21:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:21:07,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 10:21:07,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:21:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 138 proven. 9 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-12-19 10:21:08,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 10:21:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 10:21:08,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:21:08,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135208017] [2023-12-19 10:21:08,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:21:08,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913391286] [2023-12-19 10:21:08,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913391286] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 10:21:08,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 10:21:08,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 10:21:08,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850526726] [2023-12-19 10:21:08,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 10:21:08,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 10:21:08,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:21:08,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 10:21:08,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-19 10:21:08,214 INFO L87 Difference]: Start difference. First operand 718 states and 1015 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-19 10:21:09,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:21:09,930 INFO L93 Difference]: Finished difference Result 2446 states and 3413 transitions. [2023-12-19 10:21:09,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-19 10:21:09,930 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 94 [2023-12-19 10:21:09,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:21:09,936 INFO L225 Difference]: With dead ends: 2446 [2023-12-19 10:21:09,937 INFO L226 Difference]: Without dead ends: 2060 [2023-12-19 10:21:09,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=879, Invalid=3281, Unknown=0, NotChecked=0, Total=4160 [2023-12-19 10:21:09,940 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1473 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 10:21:09,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1480 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 10:21:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2023-12-19 10:21:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1156. [2023-12-19 10:21:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 943 states have (on average 1.354188759278897) internal successors, (1277), 947 states have internal predecessors, (1277), 161 states have call successors, (161), 51 states have call predecessors, (161), 51 states have return successors, (161), 157 states have call predecessors, (161), 161 states have call successors, (161) [2023-12-19 10:21:10,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1599 transitions. [2023-12-19 10:21:10,037 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1599 transitions. Word has length 94 [2023-12-19 10:21:10,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:21:10,037 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1599 transitions. [2023-12-19 10:21:10,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-19 10:21:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1599 transitions. [2023-12-19 10:21:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 10:21:10,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:21:10,039 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:10,058 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 10:21:10,243 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 10:21:10,244 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:21:10,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:21:10,244 INFO L85 PathProgramCache]: Analyzing trace with hash 709226041, now seen corresponding path program 1 times [2023-12-19 10:21:10,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:21:10,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004121421] [2023-12-19 10:21:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:10,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:21:10,256 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:21:10,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568648108] [2023-12-19 10:21:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:10,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:21:10,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:21:10,259 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 10:21:10,264 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 10:21:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:21:10,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 10:21:10,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:21:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:21:14,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:21:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:21:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004121421] [2023-12-19 10:21:14,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:21:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568648108] [2023-12-19 10:21:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568648108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:21:14,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:21:14,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 10:21:14,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554146676] [2023-12-19 10:21:14,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:21:14,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 10:21:14,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:21:14,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 10:21:14,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 10:21:14,234 INFO L87 Difference]: Start difference. First operand 1156 states and 1599 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:21:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:21:22,768 INFO L93 Difference]: Finished difference Result 1833 states and 2556 transitions. [2023-12-19 10:21:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 10:21:22,769 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2023-12-19 10:21:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:21:22,773 INFO L225 Difference]: With dead ends: 1833 [2023-12-19 10:21:22,773 INFO L226 Difference]: Without dead ends: 1462 [2023-12-19 10:21:22,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 10:21:22,775 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 499 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 10:21:22,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 836 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 10:21:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2023-12-19 10:21:22,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1165. [2023-12-19 10:21:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 952 states have (on average 1.35609243697479) internal successors, (1291), 956 states have internal predecessors, (1291), 161 states have call successors, (161), 51 states have call predecessors, (161), 51 states have return successors, (161), 157 states have call predecessors, (161), 161 states have call successors, (161) [2023-12-19 10:21:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1613 transitions. [2023-12-19 10:21:22,843 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1613 transitions. Word has length 94 [2023-12-19 10:21:22,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:21:22,843 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1613 transitions. [2023-12-19 10:21:22,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:21:22,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1613 transitions. [2023-12-19 10:21:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 10:21:22,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:21:22,845 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:22,860 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 10:21:23,061 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 10:21:23,061 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:21:23,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:21:23,061 INFO L85 PathProgramCache]: Analyzing trace with hash -157378887, now seen corresponding path program 1 times [2023-12-19 10:21:23,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:21:23,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248957235] [2023-12-19 10:21:23,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:23,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:21:23,075 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:21:23,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683082415] [2023-12-19 10:21:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:23,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:21:23,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:21:23,077 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 10:21:23,102 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 10:21:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:21:23,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 10:21:23,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:21:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-19 10:21:23,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 10:21:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 10:21:24,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:21:24,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248957235] [2023-12-19 10:21:24,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:21:24,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683082415] [2023-12-19 10:21:24,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683082415] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 10:21:24,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 10:21:24,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2023-12-19 10:21:24,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541663453] [2023-12-19 10:21:24,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 10:21:24,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-19 10:21:24,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:21:24,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-19 10:21:24,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-19 10:21:24,913 INFO L87 Difference]: Start difference. First operand 1165 states and 1613 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-19 10:21:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:21:28,588 INFO L93 Difference]: Finished difference Result 4032 states and 5619 transitions. [2023-12-19 10:21:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 10:21:28,589 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 94 [2023-12-19 10:21:28,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:21:28,599 INFO L225 Difference]: With dead ends: 4032 [2023-12-19 10:21:28,599 INFO L226 Difference]: Without dead ends: 3230 [2023-12-19 10:21:28,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=785, Invalid=2875, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 10:21:28,603 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 1068 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 10:21:28,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 784 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 10:21:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2023-12-19 10:21:28,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 2191. [2023-12-19 10:21:28,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 1739 states have (on average 1.335250143760782) internal successors, (2322), 1753 states have internal predecessors, (2322), 335 states have call successors, (335), 116 states have call predecessors, (335), 116 states have return successors, (335), 321 states have call predecessors, (335), 335 states have call successors, (335) [2023-12-19 10:21:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 2992 transitions. [2023-12-19 10:21:28,837 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 2992 transitions. Word has length 94 [2023-12-19 10:21:28,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:21:28,838 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 2992 transitions. [2023-12-19 10:21:28,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-19 10:21:28,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 2992 transitions. [2023-12-19 10:21:28,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 10:21:28,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:21:28,840 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:28,858 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 10:21:29,046 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 10:21:29,047 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:21:29,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:21:29,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1052409747, now seen corresponding path program 1 times [2023-12-19 10:21:29,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:21:29,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808670681] [2023-12-19 10:21:29,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:29,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:21:29,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:21:29,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967814974] [2023-12-19 10:21:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:21:29,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:21:29,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:21:29,064 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 10:21:29,066 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 10:21:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:21:29,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 10:21:29,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:22:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:22:04,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:22:04,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:22:04,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808670681] [2023-12-19 10:22:04,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:22:04,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967814974] [2023-12-19 10:22:04,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967814974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:22:04,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:22:04,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 10:22:04,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367139787] [2023-12-19 10:22:04,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:22:04,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 10:22:04,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:22:04,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 10:22:04,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-19 10:22:04,588 INFO L87 Difference]: Start difference. First operand 2191 states and 2992 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:22:05,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:22:05,513 INFO L93 Difference]: Finished difference Result 4564 states and 6211 transitions. [2023-12-19 10:22:05,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 10:22:05,514 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2023-12-19 10:22:05,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:22:05,523 INFO L225 Difference]: With dead ends: 4564 [2023-12-19 10:22:05,523 INFO L226 Difference]: Without dead ends: 2429 [2023-12-19 10:22:05,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-12-19 10:22:05,530 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 232 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 10:22:05,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 648 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 10:22:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2023-12-19 10:22:05,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2237. [2023-12-19 10:22:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 1785 states have (on average 1.3327731092436974) internal successors, (2379), 1799 states have internal predecessors, (2379), 335 states have call successors, (335), 116 states have call predecessors, (335), 116 states have return successors, (335), 321 states have call predecessors, (335), 335 states have call successors, (335) [2023-12-19 10:22:05,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3049 transitions. [2023-12-19 10:22:05,746 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3049 transitions. Word has length 95 [2023-12-19 10:22:05,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:22:05,746 INFO L495 AbstractCegarLoop]: Abstraction has 2237 states and 3049 transitions. [2023-12-19 10:22:05,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:22:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3049 transitions. [2023-12-19 10:22:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 10:22:05,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:22:05,748 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:05,754 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 10:22:05,953 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 10:22:05,954 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:22:05,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:22:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash -747208783, now seen corresponding path program 1 times [2023-12-19 10:22:05,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:22:05,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590837708] [2023-12-19 10:22:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:22:05,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:22:05,963 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:22:05,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314791770] [2023-12-19 10:22:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:22:05,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:22:05,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:22:05,967 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 10:22:05,968 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 10:22:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:22:06,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-19 10:22:06,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 10:25:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 10:25:38,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 10:25:38,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 10:25:38,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590837708] [2023-12-19 10:25:38,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 10:25:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314791770] [2023-12-19 10:25:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314791770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 10:25:38,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 10:25:38,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 10:25:38,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006177383] [2023-12-19 10:25:38,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 10:25:38,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 10:25:38,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 10:25:38,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 10:25:38,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-12-19 10:25:38,684 INFO L87 Difference]: Start difference. First operand 2237 states and 3049 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:25:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 10:25:39,619 INFO L93 Difference]: Finished difference Result 2437 states and 3293 transitions. [2023-12-19 10:25:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 10:25:39,620 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2023-12-19 10:25:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 10:25:39,626 INFO L225 Difference]: With dead ends: 2437 [2023-12-19 10:25:39,626 INFO L226 Difference]: Without dead ends: 2435 [2023-12-19 10:25:39,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2023-12-19 10:25:39,628 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 205 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 10:25:39,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 748 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 10:25:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-12-19 10:25:39,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2279. [2023-12-19 10:25:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 1827 states have (on average 1.3300492610837438) internal successors, (2430), 1841 states have internal predecessors, (2430), 335 states have call successors, (335), 116 states have call predecessors, (335), 116 states have return successors, (335), 321 states have call predecessors, (335), 335 states have call successors, (335) [2023-12-19 10:25:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3100 transitions. [2023-12-19 10:25:39,816 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3100 transitions. Word has length 95 [2023-12-19 10:25:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 10:25:39,817 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 3100 transitions. [2023-12-19 10:25:39,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 10:25:39,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3100 transitions. [2023-12-19 10:25:39,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-19 10:25:39,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 10:25:39,818 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:39,825 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 10:25:40,023 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 10:25:40,023 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 10:25:40,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 10:25:40,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2022047596, now seen corresponding path program 1 times [2023-12-19 10:25:40,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 10:25:40,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800947917] [2023-12-19 10:25:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:25:40,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 10:25:40,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 10:25:40,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668816650] [2023-12-19 10:25:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 10:25:40,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 10:25:40,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 10:25:40,036 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 10:25:40,049 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 10:25:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 10:25:40,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 10:25:40,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-19 10:33:35,009 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 10:33:35,009 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 10:33:35,061 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 10:33:35,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 10:33:35,271 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 10:33:35,271 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 97 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-37-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-1 context. [2023-12-19 10:33:35,275 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] [2023-12-19 10:33:35,281 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 10:33:35,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 10:33:35 BoogieIcfgContainer [2023-12-19 10:33:35,283 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 10:33:35,283 INFO L158 Benchmark]: Toolchain (without parser) took 866081.07ms. Allocated memory was 183.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 138.7MB in the beginning and 993.9MB in the end (delta: -855.2MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-19 10:33:35,286 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory was 141.3MB in the beginning and 141.1MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 10:33:35,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.83ms. Allocated memory is still 183.5MB. Free memory was 138.3MB in the beginning and 124.6MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-19 10:33:35,286 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.75ms. Allocated memory is still 183.5MB. Free memory was 124.6MB in the beginning and 120.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 10:33:35,287 INFO L158 Benchmark]: Boogie Preprocessor took 67.61ms. Allocated memory is still 183.5MB. Free memory was 120.9MB in the beginning and 116.0MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 10:33:35,287 INFO L158 Benchmark]: RCFGBuilder took 497.81ms. Allocated memory is still 183.5MB. Free memory was 115.9MB in the beginning and 146.2MB in the end (delta: -30.2MB). Peak memory consumption was 21.2MB. Max. memory is 8.0GB. [2023-12-19 10:33:35,287 INFO L158 Benchmark]: TraceAbstraction took 865187.45ms. Allocated memory was 183.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 145.6MB in the beginning and 993.9MB in the end (delta: -848.2MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-19 10:33:35,290 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory was 141.3MB in the beginning and 141.1MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 277.83ms. Allocated memory is still 183.5MB. Free memory was 138.3MB in the beginning and 124.6MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.75ms. Allocated memory is still 183.5MB. Free memory was 124.6MB in the beginning and 120.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 67.61ms. Allocated memory is still 183.5MB. Free memory was 120.9MB in the beginning and 116.0MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 497.81ms. Allocated memory is still 183.5MB. Free memory was 115.9MB in the beginning and 146.2MB in the end (delta: -30.2MB). Peak memory consumption was 21.2MB. Max. memory is 8.0GB. * TraceAbstraction took 865187.45ms. Allocated memory was 183.5MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 145.6MB in the beginning and 993.9MB in the end (delta: -848.2MB). Peak memory consumption was 1.0GB. 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 97 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-37-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 865.1s, OverallIterations: 22, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 56.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7419 SdHoareTripleChecker+Valid, 26.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7389 mSDsluCounter, 12154 SdHoareTripleChecker+Invalid, 25.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9790 mSDsCounter, 1289 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9597 IncrementalHoareTripleChecker+Invalid, 10886 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1289 mSolverCounterUnsat, 2364 mSDtfsCounter, 9597 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2644 GetRequests, 2140 SyntacticMatches, 1 SemanticMatches, 503 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4405 ImplicationChecksByTransitivity, 48.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2279occurred in iteration=21, InterpolantAutomatonStates: 398, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 4021 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 322.5s InterpolantComputationTime, 2034 NumberOfCodeBlocks, 2034 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2292 ConstructedInterpolants, 7 QuantifiedInterpolants, 23541 SizeOfPredicates, 273 NumberOfNonLiveVariables, 5487 ConjunctsInSsa, 386 ConjunctsInUnsatCore, 25 InterpolantComputations, 16 PerfectInterpolantSequences, 7638/7800 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