/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_codestructure_steplocals_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:35:59,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:35:59,114 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:35:59,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:35:59,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:35:59,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:35:59,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:35:59,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:35:59,140 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:35:59,143 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:35:59,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:35:59,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:35:59,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:35:59,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:35:59,144 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:35:59,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:35:59,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:35:59,145 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:35:59,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:35:59,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:35:59,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:35:59,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:35:59,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:35:59,147 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:35:59,147 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:35:59,147 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:35:59,147 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:35:59,147 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:35:59,148 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:35:59,148 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:35:59,148 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:35:59,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:35:59,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:35:59,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:35:59,149 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:35:59,149 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:35:59,149 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:35:59,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:35:59,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:35:59,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:35:59,149 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:35:59,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:35:59,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:35:59,150 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:35:59,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:35:59,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:35:59,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:35:59,365 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:35:59,365 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:35:59,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-34.i [2023-12-15 19:36:00,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:36:00,560 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:36:00,561 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-34.i [2023-12-15 19:36:00,567 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41ea690ac/820e62671180486190e66b0160b0ce16/FLAGb8dbe0b74 [2023-12-15 19:36:00,577 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41ea690ac/820e62671180486190e66b0160b0ce16 [2023-12-15 19:36:00,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:36:00,580 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:36:00,581 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:36:00,581 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:36:00,585 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:36:00,585 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ed4879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00, skipping insertion in model container [2023-12-15 19:36:00,586 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,604 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:36:00,694 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_codestructure_steplocals_file-34.i[917,930] [2023-12-15 19:36:00,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:36:00,740 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:36:00,747 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_codestructure_steplocals_file-34.i[917,930] [2023-12-15 19:36:00,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:36:00,779 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:36:00,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00 WrapperNode [2023-12-15 19:36:00,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:36:00,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:36:00,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:36:00,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:36:00,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,791 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,825 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 202 [2023-12-15 19:36:00,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:36:00,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:36:00,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:36:00,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:36:00,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,867 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:36:00,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:36:00,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:36:00,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:36:00,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:36:00,893 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (1/1) ... [2023-12-15 19:36:00,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:36:00,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:00,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:36:00,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:36:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:36:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:36:00,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:36:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:36:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:36:00,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:36:00,999 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:36:01,001 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:36:01,349 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:36:01,385 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:36:01,385 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:36:01,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:36:01 BoogieIcfgContainer [2023-12-15 19:36:01,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:36:01,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:36:01,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:36:01,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:36:01,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:36:00" (1/3) ... [2023-12-15 19:36:01,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cddef74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:36:01, skipping insertion in model container [2023-12-15 19:36:01,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:36:00" (2/3) ... [2023-12-15 19:36:01,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cddef74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:36:01, skipping insertion in model container [2023-12-15 19:36:01,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:36:01" (3/3) ... [2023-12-15 19:36:01,392 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-34.i [2023-12-15 19:36:01,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:36:01,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:36:01,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:36:01,447 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;@1708232b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:36:01,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:36:01,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 53 states have (on average 1.509433962264151) internal successors, (80), 54 states have internal predecessors, (80), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 19:36:01,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-15 19:36:01,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:01,465 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:01,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:01,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash -661736604, now seen corresponding path program 1 times [2023-12-15 19:36:01,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:01,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91544746] [2023-12-15 19:36:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:01,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:01,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:01,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91544746] [2023-12-15 19:36:01,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:36:01,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105019288] [2023-12-15 19:36:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:01,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:01,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:01,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:36:01,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:36:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:01,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:36:01,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2023-12-15 19:36:01,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:01,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105019288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:01,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:01,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:36:01,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372446733] [2023-12-15 19:36:01,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:01,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:36:01,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:01,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:36:01,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:36:01,913 INFO L87 Difference]: Start difference. First operand has 83 states, 53 states have (on average 1.509433962264151) internal successors, (80), 54 states have internal predecessors, (80), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-15 19:36:01,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:01,963 INFO L93 Difference]: Finished difference Result 163 states and 293 transitions. [2023-12-15 19:36:01,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:36:01,966 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 168 [2023-12-15 19:36:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:01,971 INFO L225 Difference]: With dead ends: 163 [2023-12-15 19:36:01,971 INFO L226 Difference]: Without dead ends: 81 [2023-12-15 19:36:01,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:36:01,977 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:01,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:36:01,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-15 19:36:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-12-15 19:36:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 52 states have internal predecessors, (75), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 19:36:02,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 129 transitions. [2023-12-15 19:36:02,011 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 129 transitions. Word has length 168 [2023-12-15 19:36:02,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:02,012 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 129 transitions. [2023-12-15 19:36:02,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2023-12-15 19:36:02,012 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 129 transitions. [2023-12-15 19:36:02,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-15 19:36:02,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:02,019 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:02,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:02,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:36:02,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:02,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:02,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1616765538, now seen corresponding path program 1 times [2023-12-15 19:36:02,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:02,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163222300] [2023-12-15 19:36:02,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:02,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:02,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:02,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049857156] [2023-12-15 19:36:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:02,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:02,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:02,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:36:02,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:36:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:02,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:36:02,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:02,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:02,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:02,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163222300] [2023-12-15 19:36:02,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:02,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049857156] [2023-12-15 19:36:02,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049857156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:02,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:02,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:36:02,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098983266] [2023-12-15 19:36:02,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:02,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:36:02,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:02,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:36:02,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:36:02,447 INFO L87 Difference]: Start difference. First operand 81 states and 129 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:02,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:02,494 INFO L93 Difference]: Finished difference Result 195 states and 311 transitions. [2023-12-15 19:36:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:36:02,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 168 [2023-12-15 19:36:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:02,502 INFO L225 Difference]: With dead ends: 195 [2023-12-15 19:36:02,502 INFO L226 Difference]: Without dead ends: 115 [2023-12-15 19:36:02,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:36:02,503 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 48 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:02,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 244 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:36:02,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-15 19:36:02,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2023-12-15 19:36:02,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 58 states have internal predecessors, (84), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 19:36:02,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 138 transitions. [2023-12-15 19:36:02,512 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 138 transitions. Word has length 168 [2023-12-15 19:36:02,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:02,513 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 138 transitions. [2023-12-15 19:36:02,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:02,513 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 138 transitions. [2023-12-15 19:36:02,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-15 19:36:02,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:02,515 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:02,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:02,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 19:36:02,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:02,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:02,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1029959524, now seen corresponding path program 1 times [2023-12-15 19:36:02,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:02,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362191378] [2023-12-15 19:36:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:02,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:02,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:02,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120973130] [2023-12-15 19:36:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:02,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:02,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:02,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:36:02,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:36:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:03,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 19:36:03,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:03,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:03,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:03,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362191378] [2023-12-15 19:36:03,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:03,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120973130] [2023-12-15 19:36:03,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120973130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:03,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:03,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 19:36:03,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959060665] [2023-12-15 19:36:03,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:03,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:36:03,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:03,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:36:03,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:36:03,802 INFO L87 Difference]: Start difference. First operand 87 states and 138 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:04,002 INFO L93 Difference]: Finished difference Result 275 states and 436 transitions. [2023-12-15 19:36:04,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 19:36:04,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 168 [2023-12-15 19:36:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:04,006 INFO L225 Difference]: With dead ends: 275 [2023-12-15 19:36:04,006 INFO L226 Difference]: Without dead ends: 189 [2023-12-15 19:36:04,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-12-15 19:36:04,009 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 286 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:04,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 683 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:36:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-15 19:36:04,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 105. [2023-12-15 19:36:04,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 76 states have (on average 1.486842105263158) internal successors, (113), 76 states have internal predecessors, (113), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 19:36:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 167 transitions. [2023-12-15 19:36:04,033 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 167 transitions. Word has length 168 [2023-12-15 19:36:04,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:04,034 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 167 transitions. [2023-12-15 19:36:04,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 167 transitions. [2023-12-15 19:36:04,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-15 19:36:04,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:04,036 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:04,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:04,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:04,237 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:04,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:04,237 INFO L85 PathProgramCache]: Analyzing trace with hash 18842274, now seen corresponding path program 1 times [2023-12-15 19:36:04,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:04,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74982421] [2023-12-15 19:36:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:04,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:04,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:04,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559235461] [2023-12-15 19:36:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:04,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:04,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:04,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:36:04,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:36:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:04,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 19:36:04,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:04,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:04,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:04,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74982421] [2023-12-15 19:36:04,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:04,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559235461] [2023-12-15 19:36:04,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559235461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:04,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:04,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 19:36:04,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981589023] [2023-12-15 19:36:04,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:04,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 19:36:04,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:04,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 19:36:04,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:36:04,720 INFO L87 Difference]: Start difference. First operand 105 states and 167 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:04,994 INFO L93 Difference]: Finished difference Result 293 states and 464 transitions. [2023-12-15 19:36:04,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 19:36:04,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 168 [2023-12-15 19:36:04,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:04,996 INFO L225 Difference]: With dead ends: 293 [2023-12-15 19:36:04,996 INFO L226 Difference]: Without dead ends: 189 [2023-12-15 19:36:04,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:36:04,997 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 266 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:04,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 634 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:36:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-15 19:36:05,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 126. [2023-12-15 19:36:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 97 states have (on average 1.4948453608247423) internal successors, (145), 97 states have internal predecessors, (145), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 19:36:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 199 transitions. [2023-12-15 19:36:05,003 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 199 transitions. Word has length 168 [2023-12-15 19:36:05,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:05,003 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 199 transitions. [2023-12-15 19:36:05,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:05,003 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 199 transitions. [2023-12-15 19:36:05,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-15 19:36:05,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:05,012 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:05,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:05,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:05,218 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:05,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:05,218 INFO L85 PathProgramCache]: Analyzing trace with hash -939192393, now seen corresponding path program 1 times [2023-12-15 19:36:05,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:05,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547691134] [2023-12-15 19:36:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:05,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:05,250 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:05,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533597549] [2023-12-15 19:36:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:05,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:05,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:05,253 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:36:05,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:36:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:05,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 19:36:05,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 726 proven. 36 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2023-12-15 19:36:05,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:36:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 42 proven. 36 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-12-15 19:36:05,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:05,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547691134] [2023-12-15 19:36:05,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:05,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533597549] [2023-12-15 19:36:05,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533597549] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:36:05,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:36:05,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-12-15 19:36:05,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154950604] [2023-12-15 19:36:05,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 19:36:05,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 19:36:05,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 19:36:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:36:05,767 INFO L87 Difference]: Start difference. First operand 126 states and 199 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-15 19:36:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:06,188 INFO L93 Difference]: Finished difference Result 318 states and 494 transitions. [2023-12-15 19:36:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 19:36:06,192 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 169 [2023-12-15 19:36:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:06,194 INFO L225 Difference]: With dead ends: 318 [2023-12-15 19:36:06,194 INFO L226 Difference]: Without dead ends: 193 [2023-12-15 19:36:06,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 326 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2023-12-15 19:36:06,195 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 221 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:06,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 370 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:36:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-15 19:36:06,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 147. [2023-12-15 19:36:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 114 states have (on average 1.394736842105263) internal successors, (159), 115 states have internal predecessors, (159), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-15 19:36:06,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 217 transitions. [2023-12-15 19:36:06,206 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 217 transitions. Word has length 169 [2023-12-15 19:36:06,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:06,207 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 217 transitions. [2023-12-15 19:36:06,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2023-12-15 19:36:06,207 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 217 transitions. [2023-12-15 19:36:06,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-15 19:36:06,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:06,209 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:06,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:06,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:06,414 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:06,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:06,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1950309643, now seen corresponding path program 1 times [2023-12-15 19:36:06,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:06,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667411077] [2023-12-15 19:36:06,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:06,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:06,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:06,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343219581] [2023-12-15 19:36:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:06,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:06,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:06,444 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:36:06,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:36:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:06,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 19:36:06,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:07,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:07,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667411077] [2023-12-15 19:36:07,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343219581] [2023-12-15 19:36:07,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343219581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:07,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:07,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 19:36:07,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501344650] [2023-12-15 19:36:07,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:07,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 19:36:07,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:07,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 19:36:07,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-15 19:36:07,300 INFO L87 Difference]: Start difference. First operand 147 states and 217 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:07,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:07,869 INFO L93 Difference]: Finished difference Result 431 states and 631 transitions. [2023-12-15 19:36:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 19:36:07,872 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 169 [2023-12-15 19:36:07,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:07,874 INFO L225 Difference]: With dead ends: 431 [2023-12-15 19:36:07,874 INFO L226 Difference]: Without dead ends: 285 [2023-12-15 19:36:07,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-15 19:36:07,876 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 411 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:07,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 489 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:36:07,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-15 19:36:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 162. [2023-12-15 19:36:07,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 129 states have (on average 1.4108527131782946) internal successors, (182), 130 states have internal predecessors, (182), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-15 19:36:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 240 transitions. [2023-12-15 19:36:07,884 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 240 transitions. Word has length 169 [2023-12-15 19:36:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:07,884 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 240 transitions. [2023-12-15 19:36:07,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 240 transitions. [2023-12-15 19:36:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-15 19:36:07,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:07,885 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:07,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:08,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:08,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:08,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:08,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1960260747, now seen corresponding path program 1 times [2023-12-15 19:36:08,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:08,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995902802] [2023-12-15 19:36:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:08,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:08,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:08,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840032003] [2023-12-15 19:36:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:08,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:08,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:08,106 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:36:08,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:36:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:08,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 19:36:08,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 870 proven. 51 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2023-12-15 19:36:08,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:36:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:08,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:08,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995902802] [2023-12-15 19:36:08,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:08,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840032003] [2023-12-15 19:36:08,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840032003] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:36:08,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:36:08,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-12-15 19:36:08,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388651480] [2023-12-15 19:36:08,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:08,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:36:08,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:08,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:36:08,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-15 19:36:08,623 INFO L87 Difference]: Start difference. First operand 162 states and 240 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:08,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:08,999 INFO L93 Difference]: Finished difference Result 499 states and 752 transitions. [2023-12-15 19:36:09,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:36:09,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 169 [2023-12-15 19:36:09,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:09,004 INFO L225 Difference]: With dead ends: 499 [2023-12-15 19:36:09,004 INFO L226 Difference]: Without dead ends: 338 [2023-12-15 19:36:09,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-12-15 19:36:09,005 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 79 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:09,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 455 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:36:09,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-12-15 19:36:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 250. [2023-12-15 19:36:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 209 states have (on average 1.4545454545454546) internal successors, (304), 212 states have internal predecessors, (304), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 19:36:09,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 374 transitions. [2023-12-15 19:36:09,023 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 374 transitions. Word has length 169 [2023-12-15 19:36:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:09,023 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 374 transitions. [2023-12-15 19:36:09,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 374 transitions. [2023-12-15 19:36:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-15 19:36:09,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:09,024 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:09,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:09,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:09,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:09,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:09,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1654648179, now seen corresponding path program 1 times [2023-12-15 19:36:09,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:09,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431282499] [2023-12-15 19:36:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:09,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:09,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:09,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807809899] [2023-12-15 19:36:09,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:09,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:09,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:09,242 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) [2023-12-15 19:36:09,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:36:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:09,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 19:36:09,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:09,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:09,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:09,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431282499] [2023-12-15 19:36:09,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:09,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807809899] [2023-12-15 19:36:09,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807809899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:09,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:09,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:36:09,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854855553] [2023-12-15 19:36:09,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:09,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:36:09,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:09,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:36:09,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:36:09,350 INFO L87 Difference]: Start difference. First operand 250 states and 374 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:09,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:09,453 INFO L93 Difference]: Finished difference Result 538 states and 801 transitions. [2023-12-15 19:36:09,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:36:09,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 169 [2023-12-15 19:36:09,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:09,454 INFO L225 Difference]: With dead ends: 538 [2023-12-15 19:36:09,454 INFO L226 Difference]: Without dead ends: 289 [2023-12-15 19:36:09,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:36:09,455 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 64 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:09,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 349 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:36:09,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-15 19:36:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 248. [2023-12-15 19:36:09,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 207 states have (on average 1.4541062801932367) internal successors, (301), 210 states have internal predecessors, (301), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 19:36:09,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 371 transitions. [2023-12-15 19:36:09,465 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 371 transitions. Word has length 169 [2023-12-15 19:36:09,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:09,466 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 371 transitions. [2023-12-15 19:36:09,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:09,466 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 371 transitions. [2023-12-15 19:36:09,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-15 19:36:09,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:09,467 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:09,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:09,668 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 [2023-12-15 19:36:09,668 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:09,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash 481183082, now seen corresponding path program 1 times [2023-12-15 19:36:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:09,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918171111] [2023-12-15 19:36:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:09,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:09,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812267168] [2023-12-15 19:36:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:09,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:09,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:09,685 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) [2023-12-15 19:36:09,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:36:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:10,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 19:36:10,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:10,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:10,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:10,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:10,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918171111] [2023-12-15 19:36:10,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:10,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812267168] [2023-12-15 19:36:10,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812267168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:10,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:10,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 19:36:10,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535842348] [2023-12-15 19:36:10,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:10,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:36:10,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:10,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:36:10,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:36:10,425 INFO L87 Difference]: Start difference. First operand 248 states and 371 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:10,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:10,653 INFO L93 Difference]: Finished difference Result 716 states and 1070 transitions. [2023-12-15 19:36:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 19:36:10,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 169 [2023-12-15 19:36:10,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:10,655 INFO L225 Difference]: With dead ends: 716 [2023-12-15 19:36:10,656 INFO L226 Difference]: Without dead ends: 469 [2023-12-15 19:36:10,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:36:10,657 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 159 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:10,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 505 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:36:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-12-15 19:36:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 259. [2023-12-15 19:36:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 218 states have (on average 1.4403669724770642) internal successors, (314), 221 states have internal predecessors, (314), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 19:36:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 384 transitions. [2023-12-15 19:36:10,668 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 384 transitions. Word has length 169 [2023-12-15 19:36:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:10,668 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 384 transitions. [2023-12-15 19:36:10,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 384 transitions. [2023-12-15 19:36:10,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-15 19:36:10,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:10,669 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:10,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:10,874 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 [2023-12-15 19:36:10,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:10,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:10,875 INFO L85 PathProgramCache]: Analyzing trace with hash -529934168, now seen corresponding path program 1 times [2023-12-15 19:36:10,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:10,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488276794] [2023-12-15 19:36:10,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:10,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:10,888 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:10,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412065530] [2023-12-15 19:36:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:10,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:10,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:10,889 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) [2023-12-15 19:36:10,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:36:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:10,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 19:36:10,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:11,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:11,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:11,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488276794] [2023-12-15 19:36:11,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:11,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412065530] [2023-12-15 19:36:11,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412065530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:11,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:11,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 19:36:11,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169599628] [2023-12-15 19:36:11,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:11,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 19:36:11,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:11,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 19:36:11,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:36:11,298 INFO L87 Difference]: Start difference. First operand 259 states and 384 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:11,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:11,601 INFO L93 Difference]: Finished difference Result 727 states and 1073 transitions. [2023-12-15 19:36:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 19:36:11,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 169 [2023-12-15 19:36:11,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:11,603 INFO L225 Difference]: With dead ends: 727 [2023-12-15 19:36:11,604 INFO L226 Difference]: Without dead ends: 469 [2023-12-15 19:36:11,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 19:36:11,605 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 164 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:11,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 617 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:36:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-12-15 19:36:11,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 262. [2023-12-15 19:36:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 221 states have (on average 1.4343891402714932) internal successors, (317), 224 states have internal predecessors, (317), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 19:36:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 387 transitions. [2023-12-15 19:36:11,615 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 387 transitions. Word has length 169 [2023-12-15 19:36:11,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:11,615 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 387 transitions. [2023-12-15 19:36:11,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 387 transitions. [2023-12-15 19:36:11,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-15 19:36:11,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:11,617 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:11,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:11,821 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 [2023-12-15 19:36:11,822 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:11,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:11,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1819639508, now seen corresponding path program 1 times [2023-12-15 19:36:11,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:11,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981555006] [2023-12-15 19:36:11,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:11,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:11,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:11,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782881593] [2023-12-15 19:36:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:11,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:11,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:11,834 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) [2023-12-15 19:36:11,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:36:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:12,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 19:36:12,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:12,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:12,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:12,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981555006] [2023-12-15 19:36:12,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:12,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782881593] [2023-12-15 19:36:12,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782881593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:12,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:12,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 19:36:12,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587535360] [2023-12-15 19:36:12,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:12,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 19:36:12,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:12,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 19:36:12,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:36:12,533 INFO L87 Difference]: Start difference. First operand 262 states and 387 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:12,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:12,917 INFO L93 Difference]: Finished difference Result 754 states and 1108 transitions. [2023-12-15 19:36:12,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 19:36:12,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 169 [2023-12-15 19:36:12,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:12,919 INFO L225 Difference]: With dead ends: 754 [2023-12-15 19:36:12,919 INFO L226 Difference]: Without dead ends: 493 [2023-12-15 19:36:12,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:36:12,920 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 284 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:12,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 546 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:36:12,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-12-15 19:36:12,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 262. [2023-12-15 19:36:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 221 states have (on average 1.4343891402714932) internal successors, (317), 224 states have internal predecessors, (317), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 19:36:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 387 transitions. [2023-12-15 19:36:12,931 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 387 transitions. Word has length 169 [2023-12-15 19:36:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:12,931 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 387 transitions. [2023-12-15 19:36:12,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:12,931 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 387 transitions. [2023-12-15 19:36:12,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-15 19:36:12,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:12,932 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:12,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:13,137 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 [2023-12-15 19:36:13,138 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:13,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:13,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1464210538, now seen corresponding path program 1 times [2023-12-15 19:36:13,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:13,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898555751] [2023-12-15 19:36:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:13,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:13,152 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:13,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903410357] [2023-12-15 19:36:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:13,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:13,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:13,154 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) [2023-12-15 19:36:13,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 19:36:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:13,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 19:36:13,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:13,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:13,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:13,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898555751] [2023-12-15 19:36:13,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:13,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903410357] [2023-12-15 19:36:13,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903410357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:13,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:13,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 19:36:13,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779083409] [2023-12-15 19:36:13,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:13,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:36:13,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:36:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:36:13,769 INFO L87 Difference]: Start difference. First operand 262 states and 387 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:14,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:14,247 INFO L93 Difference]: Finished difference Result 754 states and 1106 transitions. [2023-12-15 19:36:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 19:36:14,248 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 169 [2023-12-15 19:36:14,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:14,249 INFO L225 Difference]: With dead ends: 754 [2023-12-15 19:36:14,249 INFO L226 Difference]: Without dead ends: 493 [2023-12-15 19:36:14,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-15 19:36:14,250 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 236 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:14,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 782 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:36:14,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-12-15 19:36:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 246. [2023-12-15 19:36:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 205 states have (on average 1.4195121951219511) internal successors, (291), 208 states have internal predecessors, (291), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 19:36:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 361 transitions. [2023-12-15 19:36:14,263 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 361 transitions. Word has length 169 [2023-12-15 19:36:14,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:14,264 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 361 transitions. [2023-12-15 19:36:14,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 361 transitions. [2023-12-15 19:36:14,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 19:36:14,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:14,265 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:14,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:14,470 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 [2023-12-15 19:36:14,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:14,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:14,470 INFO L85 PathProgramCache]: Analyzing trace with hash -862589119, now seen corresponding path program 1 times [2023-12-15 19:36:14,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:14,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000363167] [2023-12-15 19:36:14,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:14,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:14,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:14,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491038371] [2023-12-15 19:36:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:14,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:14,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:14,482 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) [2023-12-15 19:36:14,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 19:36:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:14,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 19:36:14,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 546 proven. 18 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-15 19:36:14,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:36:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:14,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:14,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000363167] [2023-12-15 19:36:14,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:14,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491038371] [2023-12-15 19:36:14,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491038371] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:36:14,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:36:14,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-12-15 19:36:14,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127335287] [2023-12-15 19:36:14,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:14,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:36:14,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:36:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-15 19:36:14,803 INFO L87 Difference]: Start difference. First operand 246 states and 361 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:15,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:15,165 INFO L93 Difference]: Finished difference Result 615 states and 911 transitions. [2023-12-15 19:36:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 19:36:15,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 170 [2023-12-15 19:36:15,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:15,167 INFO L225 Difference]: With dead ends: 615 [2023-12-15 19:36:15,167 INFO L226 Difference]: Without dead ends: 370 [2023-12-15 19:36:15,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:36:15,168 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 97 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:15,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 528 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:36:15,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-12-15 19:36:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 252. [2023-12-15 19:36:15,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 211 states have (on average 1.4123222748815165) internal successors, (298), 214 states have internal predecessors, (298), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 19:36:15,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 368 transitions. [2023-12-15 19:36:15,178 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 368 transitions. Word has length 170 [2023-12-15 19:36:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:15,178 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 368 transitions. [2023-12-15 19:36:15,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:15,179 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 368 transitions. [2023-12-15 19:36:15,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 19:36:15,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:15,180 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:15,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:15,396 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 [2023-12-15 19:36:15,396 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:15,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:15,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1542647489, now seen corresponding path program 1 times [2023-12-15 19:36:15,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:15,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102385179] [2023-12-15 19:36:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:15,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:15,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:15,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506509463] [2023-12-15 19:36:15,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:15,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:15,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:15,408 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) [2023-12-15 19:36:15,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 19:36:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:15,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:36:15,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:15,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:15,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:15,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102385179] [2023-12-15 19:36:15,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:15,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506509463] [2023-12-15 19:36:15,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506509463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:15,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:15,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:36:15,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369516774] [2023-12-15 19:36:15,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:15,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:36:15,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:15,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:36:15,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:36:15,514 INFO L87 Difference]: Start difference. First operand 252 states and 368 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:15,696 INFO L93 Difference]: Finished difference Result 583 states and 846 transitions. [2023-12-15 19:36:15,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:36:15,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 170 [2023-12-15 19:36:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:15,697 INFO L225 Difference]: With dead ends: 583 [2023-12-15 19:36:15,697 INFO L226 Difference]: Without dead ends: 332 [2023-12-15 19:36:15,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:36:15,698 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 107 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:15,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 402 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:36:15,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-15 19:36:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 246. [2023-12-15 19:36:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 205 states have (on average 1.4146341463414633) internal successors, (290), 208 states have internal predecessors, (290), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 19:36:15,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 360 transitions. [2023-12-15 19:36:15,708 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 360 transitions. Word has length 170 [2023-12-15 19:36:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:15,709 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 360 transitions. [2023-12-15 19:36:15,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:15,709 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 360 transitions. [2023-12-15 19:36:15,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 19:36:15,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:15,710 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:15,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:15,915 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 [2023-12-15 19:36:15,915 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:15,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:15,915 INFO L85 PathProgramCache]: Analyzing trace with hash -517877655, now seen corresponding path program 1 times [2023-12-15 19:36:15,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:15,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417331291] [2023-12-15 19:36:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:15,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:15,945 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:15,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187900756] [2023-12-15 19:36:15,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:15,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:15,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:15,947 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) [2023-12-15 19:36:15,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 19:36:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:16,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-15 19:36:16,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:17,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:17,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:17,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417331291] [2023-12-15 19:36:17,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187900756] [2023-12-15 19:36:17,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187900756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:17,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:17,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-15 19:36:17,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180037212] [2023-12-15 19:36:17,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:17,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 19:36:17,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:17,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 19:36:17,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-12-15 19:36:17,505 INFO L87 Difference]: Start difference. First operand 246 states and 360 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:23,900 INFO L93 Difference]: Finished difference Result 782 states and 1140 transitions. [2023-12-15 19:36:23,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-15 19:36:23,901 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 170 [2023-12-15 19:36:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:23,903 INFO L225 Difference]: With dead ends: 782 [2023-12-15 19:36:23,903 INFO L226 Difference]: Without dead ends: 537 [2023-12-15 19:36:23,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=280, Invalid=712, Unknown=0, NotChecked=0, Total=992 [2023-12-15 19:36:23,904 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 355 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:23,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 805 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-15 19:36:23,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-12-15 19:36:23,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 216. [2023-12-15 19:36:23,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 175 states have (on average 1.3885714285714286) internal successors, (243), 178 states have internal predecessors, (243), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 19:36:23,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 313 transitions. [2023-12-15 19:36:23,918 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 313 transitions. Word has length 170 [2023-12-15 19:36:23,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:23,919 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 313 transitions. [2023-12-15 19:36:23,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:23,919 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 313 transitions. [2023-12-15 19:36:23,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 19:36:23,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:23,924 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:23,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:24,128 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 [2023-12-15 19:36:24,129 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:24,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:24,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1487536190, now seen corresponding path program 1 times [2023-12-15 19:36:24,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:24,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953016948] [2023-12-15 19:36:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:24,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:24,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:24,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694411496] [2023-12-15 19:36:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:24,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:24,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:24,145 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) [2023-12-15 19:36:24,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 19:36:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:24,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-15 19:36:24,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:36:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:36:45,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:36:45,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:36:45,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953016948] [2023-12-15 19:36:45,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:36:45,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694411496] [2023-12-15 19:36:45,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694411496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:36:45,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:36:45,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 19:36:45,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028861730] [2023-12-15 19:36:45,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:36:45,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 19:36:45,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:36:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 19:36:45,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-15 19:36:45,652 INFO L87 Difference]: Start difference. First operand 216 states and 313 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:36:47,113 INFO L93 Difference]: Finished difference Result 572 states and 819 transitions. [2023-12-15 19:36:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 19:36:47,114 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 171 [2023-12-15 19:36:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:36:47,116 INFO L225 Difference]: With dead ends: 572 [2023-12-15 19:36:47,116 INFO L226 Difference]: Without dead ends: 570 [2023-12-15 19:36:47,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-12-15 19:36:47,117 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 282 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:36:47,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 841 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 19:36:47,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-12-15 19:36:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 419. [2023-12-15 19:36:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 326 states have (on average 1.3742331288343559) internal successors, (448), 332 states have internal predecessors, (448), 82 states have call successors, (82), 10 states have call predecessors, (82), 10 states have return successors, (82), 76 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-15 19:36:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 612 transitions. [2023-12-15 19:36:47,155 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 612 transitions. Word has length 171 [2023-12-15 19:36:47,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:36:47,155 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 612 transitions. [2023-12-15 19:36:47,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:36:47,155 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 612 transitions. [2023-12-15 19:36:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 19:36:47,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:36:47,156 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:36:47,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 19:36:47,361 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 [2023-12-15 19:36:47,361 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:36:47,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:36:47,362 INFO L85 PathProgramCache]: Analyzing trace with hash -807477820, now seen corresponding path program 1 times [2023-12-15 19:36:47,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:36:47,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051480941] [2023-12-15 19:36:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:47,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:36:47,379 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:36:47,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451133661] [2023-12-15 19:36:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:36:47,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:36:47,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:36:47,381 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) [2023-12-15 19:36:47,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 19:36:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:36:47,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 19:36:47,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:37:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-15 19:37:04,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:37:04,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:37:04,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051480941] [2023-12-15 19:37:04,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:37:04,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451133661] [2023-12-15 19:37:04,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451133661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:37:04,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:37:04,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 19:37:04,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247937259] [2023-12-15 19:37:04,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:37:04,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 19:37:04,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:37:04,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 19:37:04,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-15 19:37:04,060 INFO L87 Difference]: Start difference. First operand 419 states and 612 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:37:05,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:37:05,389 INFO L93 Difference]: Finished difference Result 553 states and 786 transitions. [2023-12-15 19:37:05,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 19:37:05,389 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 171 [2023-12-15 19:37:05,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:37:05,391 INFO L225 Difference]: With dead ends: 553 [2023-12-15 19:37:05,391 INFO L226 Difference]: Without dead ends: 551 [2023-12-15 19:37:05,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2023-12-15 19:37:05,392 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 288 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:37:05,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 846 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 19:37:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-12-15 19:37:05,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 461. [2023-12-15 19:37:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 362 states have (on average 1.3591160220994476) internal successors, (492), 370 states have internal predecessors, (492), 86 states have call successors, (86), 12 states have call predecessors, (86), 12 states have return successors, (86), 78 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-15 19:37:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 664 transitions. [2023-12-15 19:37:05,436 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 664 transitions. Word has length 171 [2023-12-15 19:37:05,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:37:05,436 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 664 transitions. [2023-12-15 19:37:05,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2023-12-15 19:37:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 664 transitions. [2023-12-15 19:37:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 19:37:05,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:37:05,438 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:37:05,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 19:37:05,642 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 [2023-12-15 19:37:05,642 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:37:05,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:37:05,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1745701628, now seen corresponding path program 1 times [2023-12-15 19:37:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:37:05,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618355895] [2023-12-15 19:37:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:37:05,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:37:05,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:37:05,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109063133] [2023-12-15 19:37:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:37:05,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:37:05,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:37:05,659 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) [2023-12-15 19:37:05,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-15 19:37:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:37:05,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 19:37:05,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 19:37:11,666 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:37:11,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-15 19:37:11,672 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:37:11,700 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:37:11,871 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 [2023-12-15 19:37:11,872 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 172 with TraceHistMax 27,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-34-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-1 context. [2023-12-15 19:37:11,875 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:37:11,878 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:37:11,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:37:11 BoogieIcfgContainer [2023-12-15 19:37:11,879 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:37:11,880 INFO L158 Benchmark]: Toolchain (without parser) took 71299.74ms. Allocated memory was 199.2MB in the beginning and 798.0MB in the end (delta: 598.7MB). Free memory was 149.0MB in the beginning and 693.3MB in the end (delta: -544.3MB). Peak memory consumption was 471.1MB. Max. memory is 8.0GB. [2023-12-15 19:37:11,880 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 199.2MB. Free memory is still 147.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:37:11,882 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.28ms. Allocated memory is still 199.2MB. Free memory was 149.0MB in the beginning and 134.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-15 19:37:11,882 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.73ms. Allocated memory is still 199.2MB. Free memory was 134.3MB in the beginning and 129.8MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 19:37:11,882 INFO L158 Benchmark]: Boogie Preprocessor took 65.73ms. Allocated memory is still 199.2MB. Free memory was 129.8MB in the beginning and 123.8MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-15 19:37:11,883 INFO L158 Benchmark]: RCFGBuilder took 493.82ms. Allocated memory was 199.2MB in the beginning and 263.2MB in the end (delta: 64.0MB). Free memory was 123.5MB in the beginning and 227.7MB in the end (delta: -104.2MB). Peak memory consumption was 31.8MB. Max. memory is 8.0GB. [2023-12-15 19:37:11,883 INFO L158 Benchmark]: TraceAbstraction took 70491.95ms. Allocated memory was 263.2MB in the beginning and 798.0MB in the end (delta: 534.8MB). Free memory was 226.6MB in the beginning and 693.3MB in the end (delta: -466.7MB). Peak memory consumption was 484.3MB. Max. memory is 8.0GB. [2023-12-15 19:37:11,885 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 199.2MB. Free memory is still 147.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.28ms. Allocated memory is still 199.2MB. Free memory was 149.0MB in the beginning and 134.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.73ms. Allocated memory is still 199.2MB. Free memory was 134.3MB in the beginning and 129.8MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 65.73ms. Allocated memory is still 199.2MB. Free memory was 129.8MB in the beginning and 123.8MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 493.82ms. Allocated memory was 199.2MB in the beginning and 263.2MB in the end (delta: 64.0MB). Free memory was 123.5MB in the beginning and 227.7MB in the end (delta: -104.2MB). Peak memory consumption was 31.8MB. Max. memory is 8.0GB. * TraceAbstraction took 70491.95ms. Allocated memory was 263.2MB in the beginning and 798.0MB in the end (delta: 534.8MB). Free memory was 226.6MB in the beginning and 693.3MB in the end (delta: -466.7MB). Peak memory consumption was 484.3MB. 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 172 with TraceHistMax 27,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-34-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.4s, OverallIterations: 18, TraceHistogramMax: 27, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3391 SdHoareTripleChecker+Valid, 8.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3347 mSDsluCounter, 9221 SdHoareTripleChecker+Invalid, 8.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6764 mSDsCounter, 170 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5775 IncrementalHoareTripleChecker+Invalid, 5945 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 170 mSolverCounterUnsat, 2457 mSDtfsCounter, 5775 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3460 GetRequests, 3242 SyntacticMatches, 1 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=461occurred in iteration=17, InterpolantAutomatonStates: 201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 2134 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 43.9s InterpolantComputationTime, 3044 NumberOfCodeBlocks, 3044 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3364 ConstructedInterpolants, 0 QuantifiedInterpolants, 12778 SizeOfPredicates, 180 NumberOfNonLiveVariables, 6461 ConjunctsInSsa, 226 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 27939/28080 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