/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:34:54,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:34:54,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:34:54,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:34:54,864 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:34:54,884 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:34:54,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:34:54,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:34:54,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:34:54,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:34:54,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:34:54,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:34:54,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:34:54,885 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:34:54,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:34:54,886 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:34:54,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:34:54,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:34:54,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:34:54,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:34:54,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:34:54,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:34:54,886 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:34:54,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:34:54,886 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:34:54,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:34:54,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:34:54,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:34:54,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:34:54,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:34:54,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:34:54,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:34:54,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:34:54,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:34:54,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:34:54,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:34:54,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:34:54,887 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:34:54,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:34:54,888 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:34:54,888 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:34:55,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:34:55,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:34:55,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:34:55,087 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:34:55,088 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:34:55,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label55.c [2023-04-01 23:34:56,058 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:34:56,435 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:34:56,436 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label55.c [2023-04-01 23:34:56,452 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c8a68470/ef59e44f96844d938cd46a314da40fbd/FLAGc4f213c36 [2023-04-01 23:34:56,467 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c8a68470/ef59e44f96844d938cd46a314da40fbd [2023-04-01 23:34:56,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:34:56,469 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:34:56,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:34:56,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:34:56,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:34:56,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:34:56" (1/1) ... [2023-04-01 23:34:56,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207e43d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:56, skipping insertion in model container [2023-04-01 23:34:56,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:34:56" (1/1) ... [2023-04-01 23:34:56,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:34:56,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:34:56,691 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label55.c[1783,1796] [2023-04-01 23:34:57,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:34:57,116 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:34:57,129 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label55.c[1783,1796] [2023-04-01 23:34:57,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:34:57,309 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:34:57,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:57 WrapperNode [2023-04-01 23:34:57,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:34:57,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:34:57,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:34:57,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:34:57,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:57" (1/1) ... [2023-04-01 23:34:57,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:57" (1/1) ... [2023-04-01 23:34:57,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:57" (1/1) ... [2023-04-01 23:34:57,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:57" (1/1) ... [2023-04-01 23:34:57,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:57" (1/1) ... [2023-04-01 23:34:57,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:57" (1/1) ... [2023-04-01 23:34:57,462 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:57" (1/1) ... [2023-04-01 23:34:57,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:57" (1/1) ... [2023-04-01 23:34:57,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:34:57,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:34:57,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:34:57,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:34:57,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:57" (1/1) ... [2023-04-01 23:34:57,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:34:57,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:34:57,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:34:57,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:34:57,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:34:57,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:34:57,544 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:34:57,544 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:34:57,544 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:34:57,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:34:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:34:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:34:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:34:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:34:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:34:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:34:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:34:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:34:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:34:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:34:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:34:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:34:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:34:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:34:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:34:57,591 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:34:57,592 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:34:59,895 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:34:59,902 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:34:59,902 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:34:59,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:34:59 BoogieIcfgContainer [2023-04-01 23:34:59,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:34:59,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:34:59,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:34:59,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:34:59,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:34:56" (1/3) ... [2023-04-01 23:34:59,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c592dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:34:59, skipping insertion in model container [2023-04-01 23:34:59,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:34:57" (2/3) ... [2023-04-01 23:34:59,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c592dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:34:59, skipping insertion in model container [2023-04-01 23:34:59,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:34:59" (3/3) ... [2023-04-01 23:34:59,909 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label55.c [2023-04-01 23:34:59,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:34:59,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:34:59,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:34:59,959 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=LoopsAndPotentialCycles, 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;@3cec406d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:34:59,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:34:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 603 states, 593 states have (on average 1.7993254637436762) internal successors, (1067), 594 states have internal predecessors, (1067), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 23:34:59,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-01 23:34:59,967 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:34:59,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:34:59,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:34:59,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:34:59,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1080562106, now seen corresponding path program 1 times [2023-04-01 23:34:59,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:34:59,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216814291] [2023-04-01 23:34:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:34:59,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:00,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:35:00,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:00,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216814291] [2023-04-01 23:35:00,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216814291] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:35:00,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:35:00,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:35:00,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152691138] [2023-04-01 23:35:00,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:35:00,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:35:00,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:00,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:35:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:35:00,341 INFO L87 Difference]: Start difference. First operand has 603 states, 593 states have (on average 1.7993254637436762) internal successors, (1067), 594 states have internal predecessors, (1067), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:35:03,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:35:03,493 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2023-04-01 23:35:03,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:35:03,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-04-01 23:35:03,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:35:03,509 INFO L225 Difference]: With dead ends: 1692 [2023-04-01 23:35:03,509 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 23:35:03,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:35:03,525 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 1487 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:35:03,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 135 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 23:35:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 23:35:03,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2023-04-01 23:35:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 986 states have (on average 1.5446247464503042) internal successors, (1523), 988 states have internal predecessors, (1523), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 23:35:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2023-04-01 23:35:03,615 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 17 [2023-04-01 23:35:03,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:35:03,615 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2023-04-01 23:35:03,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:35:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2023-04-01 23:35:03,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-01 23:35:03,619 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:35:03,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:35:03,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:35:03,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:35:03,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:35:03,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1415044033, now seen corresponding path program 1 times [2023-04-01 23:35:03,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:35:03,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466511904] [2023-04-01 23:35:03,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:03,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:03,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:03,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:35:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:35:03,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:03,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466511904] [2023-04-01 23:35:03,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466511904] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:35:03,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:35:03,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:35:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458253635] [2023-04-01 23:35:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:35:03,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:35:03,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:35:03,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:35:03,850 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:35:08,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:35:08,013 INFO L93 Difference]: Finished difference Result 2962 states and 4571 transitions. [2023-04-01 23:35:08,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:35:08,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 88 [2023-04-01 23:35:08,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:35:08,040 INFO L225 Difference]: With dead ends: 2962 [2023-04-01 23:35:08,040 INFO L226 Difference]: Without dead ends: 1966 [2023-04-01 23:35:08,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:35:08,043 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1610 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 3480 mSolverCounterSat, 765 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 4245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 765 IncrementalHoareTripleChecker+Valid, 3480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:35:08,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 332 Invalid, 4245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [765 Valid, 3480 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-01 23:35:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2023-04-01 23:35:08,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1914. [2023-04-01 23:35:08,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1880 states have (on average 1.2920212765957446) internal successors, (2429), 1888 states have internal predecessors, (2429), 10 states have call successors, (10), 10 states have call predecessors, (10), 23 states have return successors, (43), 15 states have call predecessors, (43), 9 states have call successors, (43) [2023-04-01 23:35:08,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2482 transitions. [2023-04-01 23:35:08,109 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2482 transitions. Word has length 88 [2023-04-01 23:35:08,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:35:08,109 INFO L495 AbstractCegarLoop]: Abstraction has 1914 states and 2482 transitions. [2023-04-01 23:35:08,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:35:08,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2482 transitions. [2023-04-01 23:35:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-01 23:35:08,111 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:35:08,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:35:08,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:35:08,111 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:35:08,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:35:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash -193097043, now seen corresponding path program 1 times [2023-04-01 23:35:08,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:35:08,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875940308] [2023-04-01 23:35:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:08,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:08,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:08,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:35:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:35:08,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:08,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875940308] [2023-04-01 23:35:08,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875940308] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:08,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010010463] [2023-04-01 23:35:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:08,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:08,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:35:08,409 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) [2023-04-01 23:35:08,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:35:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:08,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 23:35:08,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:35:08,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:35:08,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:35:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:35:08,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010010463] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:08,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:35:08,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 10 [2023-04-01 23:35:08,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927416975] [2023-04-01 23:35:08,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:35:08,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:35:08,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:35:08,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:35:08,826 INFO L87 Difference]: Start difference. First operand 1914 states and 2482 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:35:10,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:35:10,618 INFO L93 Difference]: Finished difference Result 4730 states and 6286 transitions. [2023-04-01 23:35:10,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:35:10,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 91 [2023-04-01 23:35:10,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:35:10,625 INFO L225 Difference]: With dead ends: 4730 [2023-04-01 23:35:10,625 INFO L226 Difference]: Without dead ends: 2363 [2023-04-01 23:35:10,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:35:10,629 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 547 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:35:10,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 800 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 23:35:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2023-04-01 23:35:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2351. [2023-04-01 23:35:10,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 2311 states have (on average 1.2219818260493294) internal successors, (2824), 2320 states have internal predecessors, (2824), 12 states have call successors, (12), 12 states have call predecessors, (12), 27 states have return successors, (63), 18 states have call predecessors, (63), 11 states have call successors, (63) [2023-04-01 23:35:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 2899 transitions. [2023-04-01 23:35:10,670 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 2899 transitions. Word has length 91 [2023-04-01 23:35:10,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:35:10,672 INFO L495 AbstractCegarLoop]: Abstraction has 2351 states and 2899 transitions. [2023-04-01 23:35:10,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:35:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 2899 transitions. [2023-04-01 23:35:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-04-01 23:35:10,680 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:35:10,681 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:35:10,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 23:35:10,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:10,887 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:35:10,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:35:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1355219970, now seen corresponding path program 1 times [2023-04-01 23:35:10,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:35:10,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580482182] [2023-04-01 23:35:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:10,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:11,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:35:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:11,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:35:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:35:11,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:11,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580482182] [2023-04-01 23:35:11,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580482182] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:11,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963195316] [2023-04-01 23:35:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:11,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:11,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:35:11,171 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) [2023-04-01 23:35:11,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:35:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:11,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:35:11,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:35:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:35:11,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:35:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:35:11,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963195316] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:35:11,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:35:11,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:35:11,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585374544] [2023-04-01 23:35:11,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:35:11,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:35:11,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:11,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:35:11,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:35:11,597 INFO L87 Difference]: Start difference. First operand 2351 states and 2899 transitions. Second operand has 11 states, 11 states have (on average 28.272727272727273) internal successors, (311), 9 states have internal predecessors, (311), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:35:14,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:35:14,967 INFO L93 Difference]: Finished difference Result 6068 states and 7768 transitions. [2023-04-01 23:35:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 23:35:14,968 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 28.272727272727273) internal successors, (311), 9 states have internal predecessors, (311), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 177 [2023-04-01 23:35:14,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:35:14,977 INFO L225 Difference]: With dead ends: 6068 [2023-04-01 23:35:14,977 INFO L226 Difference]: Without dead ends: 3723 [2023-04-01 23:35:14,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 356 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:35:14,981 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 3317 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 3750 mSolverCounterSat, 981 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 4731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 981 IncrementalHoareTripleChecker+Valid, 3750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:35:14,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3317 Valid, 306 Invalid, 4731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [981 Valid, 3750 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 23:35:14,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2023-04-01 23:35:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3710. [2023-04-01 23:35:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3634 states have (on average 1.2030820033021463) internal successors, (4372), 3655 states have internal predecessors, (4372), 18 states have call successors, (18), 18 states have call predecessors, (18), 57 states have return successors, (171), 36 states have call predecessors, (171), 17 states have call successors, (171) [2023-04-01 23:35:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 4561 transitions. [2023-04-01 23:35:15,037 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 4561 transitions. Word has length 177 [2023-04-01 23:35:15,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:35:15,038 INFO L495 AbstractCegarLoop]: Abstraction has 3710 states and 4561 transitions. [2023-04-01 23:35:15,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.272727272727273) internal successors, (311), 9 states have internal predecessors, (311), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:35:15,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 4561 transitions. [2023-04-01 23:35:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-04-01 23:35:15,040 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:35:15,040 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:35:15,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 23:35:15,245 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,SelfDestructingSolverStorable3 [2023-04-01 23:35:15,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:35:15,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:35:15,246 INFO L85 PathProgramCache]: Analyzing trace with hash -2093200824, now seen corresponding path program 1 times [2023-04-01 23:35:15,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:35:15,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237325715] [2023-04-01 23:35:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:15,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:15,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:15,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:35:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:15,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:35:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-01 23:35:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-04-01 23:35:15,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:15,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237325715] [2023-04-01 23:35:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237325715] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768740406] [2023-04-01 23:35:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:15,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:35:15,625 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) [2023-04-01 23:35:15,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:35:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:15,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:35:15,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:35:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-04-01 23:35:15,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:35:15,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768740406] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:35:15,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:35:15,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 23:35:15,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404554529] [2023-04-01 23:35:15,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:35:15,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:35:15,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:15,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:35:15,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:35:15,772 INFO L87 Difference]: Start difference. First operand 3710 states and 4561 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:35:17,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:35:17,114 INFO L93 Difference]: Finished difference Result 10492 states and 13080 transitions. [2023-04-01 23:35:17,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:35:17,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 261 [2023-04-01 23:35:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:35:17,128 INFO L225 Difference]: With dead ends: 10492 [2023-04-01 23:35:17,129 INFO L226 Difference]: Without dead ends: 5903 [2023-04-01 23:35:17,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:35:17,134 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 439 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:35:17,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 850 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 23:35:17,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2023-04-01 23:35:17,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5903. [2023-04-01 23:35:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5903 states, 5790 states have (on average 1.1378238341968911) internal successors, (6588), 5821 states have internal predecessors, (6588), 28 states have call successors, (28), 28 states have call predecessors, (28), 84 states have return successors, (311), 53 states have call predecessors, (311), 27 states have call successors, (311) [2023-04-01 23:35:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 6927 transitions. [2023-04-01 23:35:17,214 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 6927 transitions. Word has length 261 [2023-04-01 23:35:17,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:35:17,215 INFO L495 AbstractCegarLoop]: Abstraction has 5903 states and 6927 transitions. [2023-04-01 23:35:17,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:35:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 6927 transitions. [2023-04-01 23:35:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-04-01 23:35:17,218 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:35:17,218 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:35:17,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 23:35:17,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:17,440 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:35:17,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:35:17,440 INFO L85 PathProgramCache]: Analyzing trace with hash -804798237, now seen corresponding path program 1 times [2023-04-01 23:35:17,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:35:17,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964689719] [2023-04-01 23:35:17,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:35:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:17,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:35:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-04-01 23:35:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-04-01 23:35:17,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:17,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964689719] [2023-04-01 23:35:17,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964689719] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800741768] [2023-04-01 23:35:17,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:17,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:17,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:35:17,690 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) [2023-04-01 23:35:17,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:35:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:17,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:35:17,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:35:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-04-01 23:35:17,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:35:17,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800741768] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:35:17,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:35:17,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 23:35:17,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439193352] [2023-04-01 23:35:17,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:35:17,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:35:17,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:17,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:35:17,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:35:17,878 INFO L87 Difference]: Start difference. First operand 5903 states and 6927 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:35:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:35:19,476 INFO L93 Difference]: Finished difference Result 14882 states and 17854 transitions. [2023-04-01 23:35:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:35:19,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 301 [2023-04-01 23:35:19,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:35:19,498 INFO L225 Difference]: With dead ends: 14882 [2023-04-01 23:35:19,498 INFO L226 Difference]: Without dead ends: 8085 [2023-04-01 23:35:19,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:35:19,510 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 498 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:35:19,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 712 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 23:35:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8085 states. [2023-04-01 23:35:19,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8085 to 8085. [2023-04-01 23:35:19,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8085 states, 7940 states have (on average 1.145088161209068) internal successors, (9092), 7978 states have internal predecessors, (9092), 38 states have call successors, (38), 38 states have call predecessors, (38), 106 states have return successors, (550), 68 states have call predecessors, (550), 37 states have call successors, (550) [2023-04-01 23:35:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8085 states to 8085 states and 9680 transitions. [2023-04-01 23:35:19,624 INFO L78 Accepts]: Start accepts. Automaton has 8085 states and 9680 transitions. Word has length 301 [2023-04-01 23:35:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:35:19,625 INFO L495 AbstractCegarLoop]: Abstraction has 8085 states and 9680 transitions. [2023-04-01 23:35:19,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:35:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 8085 states and 9680 transitions. [2023-04-01 23:35:19,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-04-01 23:35:19,628 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:35:19,628 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:35:19,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:35:19,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:19,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:35:19,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:35:19,834 INFO L85 PathProgramCache]: Analyzing trace with hash -803707839, now seen corresponding path program 1 times [2023-04-01 23:35:19,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:35:19,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352597810] [2023-04-01 23:35:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:19,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:35:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:20,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:35:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:20,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:35:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:20,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:35:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-01 23:35:20,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:35:20,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352597810] [2023-04-01 23:35:20,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352597810] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:20,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199549428] [2023-04-01 23:35:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:35:20,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:35:20,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:35:20,253 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) [2023-04-01 23:35:20,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:35:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:35:20,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-01 23:35:20,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:35:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-04-01 23:35:20,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:35:21,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199549428] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:35:21,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 23:35:21,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2023-04-01 23:35:21,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059165087] [2023-04-01 23:35:21,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 23:35:21,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:35:21,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:35:21,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:35:21,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:35:21,461 INFO L87 Difference]: Start difference. First operand 8085 states and 9680 transitions. Second operand has 11 states, 11 states have (on average 40.81818181818182) internal successors, (449), 9 states have internal predecessors, (449), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 23:35:24,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:26,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:28,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:30,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:33,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:35,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:37,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:40,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:42,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:44,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:46,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:48,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:50,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:52,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:54,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:35:59,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:01,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:02,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:04,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:06,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:09,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:11,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:14,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:16,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:18,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:21,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:23,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:26,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:30,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:31,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:34,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:36,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:38,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:42,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:45,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:47,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:49,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:52,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:54,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:36:57,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:00,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:03,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:05,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:07,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:09,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:11,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:13,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:16,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:20,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:22,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:25,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:27,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:29,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:32,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:34,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:36,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:38,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:40,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:42,718 INFO L93 Difference]: Finished difference Result 37292 states and 47689 transitions. [2023-04-01 23:37:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-01 23:37:42,719 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 40.81818181818182) internal successors, (449), 9 states have internal predecessors, (449), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 314 [2023-04-01 23:37:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:42,816 INFO L225 Difference]: With dead ends: 37292 [2023-04-01 23:37:42,816 INFO L226 Difference]: Without dead ends: 28323 [2023-04-01 23:37:42,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 549 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2023-04-01 23:37:42,842 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 3998 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 9391 mSolverCounterSat, 1272 mSolverCounterUnsat, 52 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 138.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3998 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 10715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1272 IncrementalHoareTripleChecker+Valid, 9391 IncrementalHoareTripleChecker+Invalid, 52 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:42,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3998 Valid, 490 Invalid, 10715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1272 Valid, 9391 Invalid, 52 Unknown, 0 Unchecked, 140.4s Time] [2023-04-01 23:37:42,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28323 states. [2023-04-01 23:37:43,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28323 to 23189. [2023-04-01 23:37:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23189 states, 22764 states have (on average 1.1048146195747672) internal successors, (25150), 22893 states have internal predecessors, (25150), 106 states have call successors, (106), 106 states have call predecessors, (106), 318 states have return successors, (2266), 189 states have call predecessors, (2266), 105 states have call successors, (2266) [2023-04-01 23:37:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23189 states to 23189 states and 27522 transitions. [2023-04-01 23:37:43,366 INFO L78 Accepts]: Start accepts. Automaton has 23189 states and 27522 transitions. Word has length 314 [2023-04-01 23:37:43,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:43,367 INFO L495 AbstractCegarLoop]: Abstraction has 23189 states and 27522 transitions. [2023-04-01 23:37:43,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 40.81818181818182) internal successors, (449), 9 states have internal predecessors, (449), 5 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 23:37:43,368 INFO L276 IsEmpty]: Start isEmpty. Operand 23189 states and 27522 transitions. [2023-04-01 23:37:43,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-04-01 23:37:43,386 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:43,386 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:37:43,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 23:37:43,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:43,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:43,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:43,592 INFO L85 PathProgramCache]: Analyzing trace with hash 153135993, now seen corresponding path program 1 times [2023-04-01 23:37:43,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:43,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786279345] [2023-04-01 23:37:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:43,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:44,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:44,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:44,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-01 23:37:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:44,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-04-01 23:37:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:44,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-04-01 23:37:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:44,282 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 220 proven. 101 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-04-01 23:37:44,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:44,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786279345] [2023-04-01 23:37:44,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786279345] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:44,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334491129] [2023-04-01 23:37:44,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:44,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:44,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:44,301 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) [2023-04-01 23:37:44,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:37:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:44,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:37:44,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-04-01 23:37:45,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:37:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-04-01 23:37:47,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334491129] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:37:47,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:37:47,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:37:47,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738929725] [2023-04-01 23:37:47,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:37:47,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:37:47,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:47,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:37:47,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:37:47,786 INFO L87 Difference]: Start difference. First operand 23189 states and 27522 transitions. Second operand has 12 states, 12 states have (on average 81.75) internal successors, (981), 10 states have internal predecessors, (981), 5 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-01 23:37:49,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:52,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:54,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:56,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:37:59,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:01,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:03,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:05,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:07,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:10,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:14,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:16,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:18,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:20,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:22,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:24,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:28,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:30,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:34,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:37,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:38,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:40,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:43,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:45,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:47,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:49,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:50,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:52,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:54,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:56,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:38:58,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:01,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:04,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:06,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:08,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:10,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:12,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:14,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:17,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:18,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:21,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:23,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:25,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:27,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:39:29,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]