/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/Problem16_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:12:10,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:12:10,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:12:10,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:12:10,700 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 23:12:10,724 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:12:10,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:12:10,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:12:10,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:12:10,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:12:10,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:12:10,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:12:10,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:12:10,726 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:12:10,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:12:10,726 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:12:10,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:12:10,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:12:10,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:12:10,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:12:10,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:12:10,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:12:10,727 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:12:10,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:12:10,727 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:12:10,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:12:10,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:12:10,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:12:10,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:12:10,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:12:10,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:12:10,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:12:10,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:12:10,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:12:10,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:12:10,728 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:12:10,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:12:10,728 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:12:10,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:12:10,729 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:12:10,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:12:10,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:12:10,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:12:10,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:12:10,907 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:12:10,907 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:12:10,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label20.c [2023-04-01 23:12:11,791 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:12:12,090 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:12:12,090 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label20.c [2023-04-01 23:12:12,102 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72bd6b049/aeb42f09dccc42d490db54a4f85716cd/FLAG9efd2ee9d [2023-04-01 23:12:12,355 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72bd6b049/aeb42f09dccc42d490db54a4f85716cd [2023-04-01 23:12:12,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:12:12,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:12:12,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:12:12,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:12:12,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:12:12,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:12:12" (1/1) ... [2023-04-01 23:12:12,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f2bac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:12, skipping insertion in model container [2023-04-01 23:12:12,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:12:12" (1/1) ... [2023-04-01 23:12:12,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:12:12,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:12:12,549 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/Problem16_label20.c[2717,2730] [2023-04-01 23:12:12,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:12:12,868 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:12:12,883 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/Problem16_label20.c[2717,2730] [2023-04-01 23:12:12,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:12:13,030 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:12:13,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:13 WrapperNode [2023-04-01 23:12:13,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:12:13,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:12:13,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:12:13,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:12:13,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:13" (1/1) ... [2023-04-01 23:12:13,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:13" (1/1) ... [2023-04-01 23:12:13,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:13" (1/1) ... [2023-04-01 23:12:13,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:13" (1/1) ... [2023-04-01 23:12:13,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:13" (1/1) ... [2023-04-01 23:12:13,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:13" (1/1) ... [2023-04-01 23:12:13,141 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:13" (1/1) ... [2023-04-01 23:12:13,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:13" (1/1) ... [2023-04-01 23:12:13,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:12:13,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:12:13,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:12:13,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:12:13,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:13" (1/1) ... [2023-04-01 23:12:13,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:12:13,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:12:13,182 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 23:12:13,187 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 23:12:13,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:12:13,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:12:13,214 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:12:13,214 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:12:13,214 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:12:13,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:12:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:12:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:12:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:12:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:12:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:12:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:12:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:12:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:12:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:12:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:12:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:12:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:12:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:12:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:12:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:12:13,266 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:12:13,267 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:12:14,639 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:12:14,652 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:12:14,652 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:12:14,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:12:14 BoogieIcfgContainer [2023-04-01 23:12:14,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:12:14,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:12:14,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:12:14,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:12:14,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:12:12" (1/3) ... [2023-04-01 23:12:14,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c5d5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:12:14, skipping insertion in model container [2023-04-01 23:12:14,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:13" (2/3) ... [2023-04-01 23:12:14,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c5d5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:12:14, skipping insertion in model container [2023-04-01 23:12:14,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:12:14" (3/3) ... [2023-04-01 23:12:14,661 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label20.c [2023-04-01 23:12:14,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:12:14,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:12:14,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:12:14,727 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;@28eb8af0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:12:14,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:12:14,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 399 states have (on average 1.8245614035087718) internal successors, (728), 400 states have internal predecessors, (728), 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 23:12:14,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-01 23:12:14,739 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:12:14,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 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 23:12:14,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:12:14,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:12:14,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1050766335, now seen corresponding path program 1 times [2023-04-01 23:12:14,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:12:14,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182940572] [2023-04-01 23:12:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:14,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:12:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:15,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:12:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:15,036 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 23:12:15,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:12:15,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182940572] [2023-04-01 23:12:15,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182940572] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:12:15,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:12:15,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 23:12:15,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619186632] [2023-04-01 23:12:15,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:12:15,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:12:15,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:12:15,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:12:15,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:12:15,061 INFO L87 Difference]: Start difference. First operand has 409 states, 399 states have (on average 1.8245614035087718) internal successors, (728), 400 states have internal predecessors, (728), 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 5 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 23:12:17,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:12:17,738 INFO L93 Difference]: Finished difference Result 1515 states and 2848 transitions. [2023-04-01 23:12:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:12:17,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 30 [2023-04-01 23:12:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:12:17,752 INFO L225 Difference]: With dead ends: 1515 [2023-04-01 23:12:17,752 INFO L226 Difference]: Without dead ends: 1038 [2023-04-01 23:12:17,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:12:17,761 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2263 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 887 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 887 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:12:17,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2263 Valid, 39 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [887 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 23:12:17,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-04-01 23:12:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2023-04-01 23:12:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1010 states have (on average 1.5950495049504951) internal successors, (1611), 1013 states have internal predecessors, (1611), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (23), 9 states have call predecessors, (23), 7 states have call successors, (23) [2023-04-01 23:12:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1642 transitions. [2023-04-01 23:12:17,831 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1642 transitions. Word has length 30 [2023-04-01 23:12:17,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:12:17,831 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1642 transitions. [2023-04-01 23:12:17,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 23:12:17,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1642 transitions. [2023-04-01 23:12:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-04-01 23:12:17,839 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:12:17,839 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-04-01 23:12:17,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:12:17,840 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:12:17,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:12:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash -142713727, now seen corresponding path program 1 times [2023-04-01 23:12:17,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:12:17,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823450694] [2023-04-01 23:12:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:17,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:12:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:18,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:12:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:12:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 23:12:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 46 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 23:12:18,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:12:18,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823450694] [2023-04-01 23:12:18,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823450694] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:12:18,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297965414] [2023-04-01 23:12:18,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:18,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:18,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:12:18,243 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 23:12:18,266 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 23:12:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:18,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:12:18,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:12:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 23:12:18,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:12:18,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297965414] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:12:18,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:12:18,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-04-01 23:12:18,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436864724] [2023-04-01 23:12:18,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:12:18,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:12:18,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:12:18,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:12:18,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:12:18,500 INFO L87 Difference]: Start difference. First operand 1031 states and 1642 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 4 states have internal predecessors, (182), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:12:20,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:12:20,121 INFO L93 Difference]: Finished difference Result 2427 states and 3816 transitions. [2023-04-01 23:12:20,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:12:20,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 4 states have internal predecessors, (182), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 212 [2023-04-01 23:12:20,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:12:20,126 INFO L225 Difference]: With dead ends: 2427 [2023-04-01 23:12:20,126 INFO L226 Difference]: Without dead ends: 1402 [2023-04-01 23:12:20,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:12:20,128 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1049 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:12:20,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 66 Invalid, 2058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 23:12:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2023-04-01 23:12:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1380. [2023-04-01 23:12:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1350 states have (on average 1.3874074074074074) internal successors, (1873), 1356 states have internal predecessors, (1873), 10 states have call successors, (10), 10 states have call predecessors, (10), 19 states have return successors, (41), 13 states have call predecessors, (41), 9 states have call successors, (41) [2023-04-01 23:12:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1924 transitions. [2023-04-01 23:12:20,158 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1924 transitions. Word has length 212 [2023-04-01 23:12:20,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:12:20,158 INFO L495 AbstractCegarLoop]: Abstraction has 1380 states and 1924 transitions. [2023-04-01 23:12:20,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 4 states have internal predecessors, (182), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:12:20,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1924 transitions. [2023-04-01 23:12:20,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-04-01 23:12:20,162 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:12:20,163 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-04-01 23:12:20,170 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 23:12:20,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:20,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:12:20,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:12:20,368 INFO L85 PathProgramCache]: Analyzing trace with hash 276385316, now seen corresponding path program 1 times [2023-04-01 23:12:20,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:12:20,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063081498] [2023-04-01 23:12:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:20,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:12:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:20,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:12:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:20,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:12:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:20,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-01 23:12:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 46 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 23:12:20,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:12:20,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063081498] [2023-04-01 23:12:20,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063081498] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:12:20,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348798971] [2023-04-01 23:12:20,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:20,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:20,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:12:20,690 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 23:12:20,692 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 23:12:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:20,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:12:20,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:12:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 23:12:20,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:12:20,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348798971] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:12:20,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:12:20,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 23:12:20,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181923949] [2023-04-01 23:12:20,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:12:20,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:12:20,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:12:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:12:20,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:12:20,894 INFO L87 Difference]: Start difference. First operand 1380 states and 1924 transitions. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 4 states have internal predecessors, (183), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:12:22,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:12:22,365 INFO L93 Difference]: Finished difference Result 4193 states and 5957 transitions. [2023-04-01 23:12:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:12:22,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 4 states have internal predecessors, (183), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 213 [2023-04-01 23:12:22,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:12:22,379 INFO L225 Difference]: With dead ends: 4193 [2023-04-01 23:12:22,379 INFO L226 Difference]: Without dead ends: 2819 [2023-04-01 23:12:22,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:12:22,383 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 963 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:12:22,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 65 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 23:12:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2023-04-01 23:12:22,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2785. [2023-04-01 23:12:22,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2715 states have (on average 1.2548802946593003) internal successors, (3407), 2736 states have internal predecessors, (3407), 18 states have call successors, (18), 18 states have call predecessors, (18), 51 states have return successors, (140), 30 states have call predecessors, (140), 17 states have call successors, (140) [2023-04-01 23:12:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3565 transitions. [2023-04-01 23:12:22,447 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3565 transitions. Word has length 213 [2023-04-01 23:12:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:12:22,447 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 3565 transitions. [2023-04-01 23:12:22,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 4 states have internal predecessors, (183), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:12:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3565 transitions. [2023-04-01 23:12:22,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-04-01 23:12:22,452 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:12:22,452 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-04-01 23:12:22,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:12:22,672 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,SelfDestructingSolverStorable2 [2023-04-01 23:12:22,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:12:22,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:12:22,674 INFO L85 PathProgramCache]: Analyzing trace with hash 389187489, now seen corresponding path program 1 times [2023-04-01 23:12:22,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:12:22,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466143215] [2023-04-01 23:12:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:22,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:12:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:12:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:12:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:22,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-04-01 23:12:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 23:12:23,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:12:23,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466143215] [2023-04-01 23:12:23,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466143215] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:12:23,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132216267] [2023-04-01 23:12:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:23,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:23,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:12:23,045 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 23:12:23,098 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 23:12:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:23,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:12:23,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:12:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:12:23,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:12:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:12:23,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132216267] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:12:23,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:12:23,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:12:23,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234385336] [2023-04-01 23:12:23,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:12:23,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:12:23,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:12:23,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:12:23,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:12:23,591 INFO L87 Difference]: Start difference. First operand 2785 states and 3565 transitions. Second operand has 11 states, 11 states have (on average 39.27272727272727) internal successors, (432), 9 states have internal predecessors, (432), 4 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 23:12:25,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:12:25,536 INFO L93 Difference]: Finished difference Result 6992 states and 9204 transitions. [2023-04-01 23:12:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 23:12:25,537 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 39.27272727272727) internal successors, (432), 9 states have internal predecessors, (432), 4 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 228 [2023-04-01 23:12:25,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:12:25,548 INFO L225 Difference]: With dead ends: 6992 [2023-04-01 23:12:25,548 INFO L226 Difference]: Without dead ends: 4213 [2023-04-01 23:12:25,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 458 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:12:25,552 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2463 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2463 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 909 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:12:25,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2463 Valid, 61 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [909 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-01 23:12:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2023-04-01 23:12:25,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 3505. [2023-04-01 23:12:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3407 states have (on average 1.224831229820957) internal successors, (4173), 3442 states have internal predecessors, (4173), 22 states have call successors, (22), 22 states have call predecessors, (22), 75 states have return successors, (190), 40 states have call predecessors, (190), 21 states have call successors, (190) [2023-04-01 23:12:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4385 transitions. [2023-04-01 23:12:25,688 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4385 transitions. Word has length 228 [2023-04-01 23:12:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:12:25,689 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 4385 transitions. [2023-04-01 23:12:25,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 39.27272727272727) internal successors, (432), 9 states have internal predecessors, (432), 4 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-04-01 23:12:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4385 transitions. [2023-04-01 23:12:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-04-01 23:12:25,694 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:12:25,694 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:12:25,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:12:25,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:25,895 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:12:25,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:12:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1410406232, now seen corresponding path program 1 times [2023-04-01 23:12:25,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:12:25,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136298420] [2023-04-01 23:12:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:25,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:12:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:12:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:26,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:12:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:26,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 23:12:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:26,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-04-01 23:12:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:26,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2023-04-01 23:12:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 197 proven. 218 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-04-01 23:12:26,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:12:26,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136298420] [2023-04-01 23:12:26,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136298420] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:12:26,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925894554] [2023-04-01 23:12:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:26,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:26,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:12:26,841 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 23:12:26,905 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 23:12:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:27,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:12:27,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:12:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 598 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-04-01 23:12:27,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:12:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 316 proven. 107 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-04-01 23:12:27,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925894554] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:12:27,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:12:27,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 23:12:27,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957225137] [2023-04-01 23:12:27,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:12:27,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:12:27,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:12:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:12:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:12:27,539 INFO L87 Difference]: Start difference. First operand 3505 states and 4385 transitions. Second operand has 14 states, 14 states have (on average 43.07142857142857) internal successors, (603), 12 states have internal predecessors, (603), 6 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 23:12:32,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:12:32,553 INFO L93 Difference]: Finished difference Result 11185 states and 14748 transitions. [2023-04-01 23:12:32,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-04-01 23:12:32,554 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 43.07142857142857) internal successors, (603), 12 states have internal predecessors, (603), 6 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 481 [2023-04-01 23:12:32,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:12:32,603 INFO L225 Difference]: With dead ends: 11185 [2023-04-01 23:12:32,603 INFO L226 Difference]: Without dead ends: 7686 [2023-04-01 23:12:32,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 1003 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=623, Invalid=2133, Unknown=0, NotChecked=0, Total=2756 [2023-04-01 23:12:32,609 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6742 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 6522 mSolverCounterSat, 3284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6759 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 9806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3284 IncrementalHoareTripleChecker+Valid, 6522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:12:32,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6759 Valid, 128 Invalid, 9806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3284 Valid, 6522 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-01 23:12:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7686 states. [2023-04-01 23:12:32,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7686 to 7307. [2023-04-01 23:12:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7307 states, 7122 states have (on average 1.2429092951418141) internal successors, (8852), 7191 states have internal predecessors, (8852), 44 states have call successors, (44), 44 states have call predecessors, (44), 140 states have return successors, (657), 71 states have call predecessors, (657), 43 states have call successors, (657) [2023-04-01 23:12:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7307 states to 7307 states and 9553 transitions. [2023-04-01 23:12:32,865 INFO L78 Accepts]: Start accepts. Automaton has 7307 states and 9553 transitions. Word has length 481 [2023-04-01 23:12:32,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:12:32,866 INFO L495 AbstractCegarLoop]: Abstraction has 7307 states and 9553 transitions. [2023-04-01 23:12:32,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.07142857142857) internal successors, (603), 12 states have internal predecessors, (603), 6 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 23:12:32,866 INFO L276 IsEmpty]: Start isEmpty. Operand 7307 states and 9553 transitions. [2023-04-01 23:12:32,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-04-01 23:12:32,874 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:12:32,874 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:12:32,882 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 23:12:33,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:33,083 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:12:33,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:12:33,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1123329406, now seen corresponding path program 1 times [2023-04-01 23:12:33,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:12:33,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420605714] [2023-04-01 23:12:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:12:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:33,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:12:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:33,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:12:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:33,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:12:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:33,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-04-01 23:12:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:33,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2023-04-01 23:12:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-04-01 23:12:33,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:12:33,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420605714] [2023-04-01 23:12:33,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420605714] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:12:33,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932678762] [2023-04-01 23:12:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:33,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:33,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:12:33,510 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 23:12:33,512 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 23:12:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:33,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:12:33,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:12:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 380 proven. 2 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-04-01 23:12:33,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:12:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 380 proven. 2 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-04-01 23:12:34,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932678762] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:12:34,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:12:34,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:12:34,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658480748] [2023-04-01 23:12:34,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:12:34,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:12:34,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:12:34,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:12:34,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:12:34,012 INFO L87 Difference]: Start difference. First operand 7307 states and 9553 transitions. Second operand has 12 states, 12 states have (on average 49.75) internal successors, (597), 10 states have internal predecessors, (597), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:12:37,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:12:37,387 INFO L93 Difference]: Finished difference Result 18400 states and 23786 transitions. [2023-04-01 23:12:37,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:12:37,397 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 49.75) internal successors, (597), 10 states have internal predecessors, (597), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 571 [2023-04-01 23:12:37,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:12:37,444 INFO L225 Difference]: With dead ends: 18400 [2023-04-01 23:12:37,444 INFO L226 Difference]: Without dead ends: 9650 [2023-04-01 23:12:37,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1182 GetRequests, 1157 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:12:37,468 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 2298 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5693 mSolverCounterSat, 1120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 6813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1120 IncrementalHoareTripleChecker+Valid, 5693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:12:37,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 126 Invalid, 6813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1120 Valid, 5693 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 23:12:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9650 states. [2023-04-01 23:12:37,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9650 to 6569. [2023-04-01 23:12:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6569 states, 6417 states have (on average 1.0606202275206482) internal successors, (6806), 6475 states have internal predecessors, (6806), 40 states have call successors, (40), 40 states have call predecessors, (40), 111 states have return successors, (329), 53 states have call predecessors, (329), 39 states have call successors, (329) [2023-04-01 23:12:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6569 states to 6569 states and 7175 transitions. [2023-04-01 23:12:37,681 INFO L78 Accepts]: Start accepts. Automaton has 6569 states and 7175 transitions. Word has length 571 [2023-04-01 23:12:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:12:37,682 INFO L495 AbstractCegarLoop]: Abstraction has 6569 states and 7175 transitions. [2023-04-01 23:12:37,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 49.75) internal successors, (597), 10 states have internal predecessors, (597), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:12:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 6569 states and 7175 transitions. [2023-04-01 23:12:37,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2023-04-01 23:12:37,696 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:12:37,696 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:12:37,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:12:37,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:37,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:12:37,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:12:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash 211921400, now seen corresponding path program 1 times [2023-04-01 23:12:37,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:12:37,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249701904] [2023-04-01 23:12:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:37,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:12:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:38,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:12:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:38,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:12:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:38,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:12:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-04-01 23:12:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:38,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2023-04-01 23:12:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:38,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2023-04-01 23:12:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 455 proven. 109 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2023-04-01 23:12:38,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:12:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249701904] [2023-04-01 23:12:38,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249701904] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:12:38,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571210642] [2023-04-01 23:12:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:38,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:38,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:12:38,437 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 23:12:38,465 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 23:12:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:38,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:12:38,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:12:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 822 proven. 2 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2023-04-01 23:12:38,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:12:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 458 proven. 110 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2023-04-01 23:12:39,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571210642] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:12:39,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:12:39,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:12:39,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233362544] [2023-04-01 23:12:39,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:12:39,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:12:39,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:12:39,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:12:39,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:12:39,200 INFO L87 Difference]: Start difference. First operand 6569 states and 7175 transitions. Second operand has 11 states, 11 states have (on average 71.27272727272727) internal successors, (784), 9 states have internal predecessors, (784), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:12:42,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:12:42,074 INFO L93 Difference]: Finished difference Result 15316 states and 17143 transitions. [2023-04-01 23:12:42,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 23:12:42,075 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 71.27272727272727) internal successors, (784), 9 states have internal predecessors, (784), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 716 [2023-04-01 23:12:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:12:42,097 INFO L225 Difference]: With dead ends: 15316 [2023-04-01 23:12:42,098 INFO L226 Difference]: Without dead ends: 8054 [2023-04-01 23:12:42,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1476 GetRequests, 1451 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:12:42,110 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1746 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 5093 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 5382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 5093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:12:42,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1751 Valid, 152 Invalid, 5382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 5093 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 23:12:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8054 states. [2023-04-01 23:12:42,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8054 to 7934. [2023-04-01 23:12:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7934 states, 7758 states have (on average 1.0413766434648106) internal successors, (8079), 7824 states have internal predecessors, (8079), 49 states have call successors, (49), 48 states have call predecessors, (49), 126 states have return successors, (326), 61 states have call predecessors, (326), 48 states have call successors, (326) [2023-04-01 23:12:42,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7934 states to 7934 states and 8454 transitions. [2023-04-01 23:12:42,250 INFO L78 Accepts]: Start accepts. Automaton has 7934 states and 8454 transitions. Word has length 716 [2023-04-01 23:12:42,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:12:42,250 INFO L495 AbstractCegarLoop]: Abstraction has 7934 states and 8454 transitions. [2023-04-01 23:12:42,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 71.27272727272727) internal successors, (784), 9 states have internal predecessors, (784), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 23:12:42,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7934 states and 8454 transitions. [2023-04-01 23:12:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2023-04-01 23:12:42,260 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:12:42,260 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:12:42,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:12:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:42,467 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:12:42,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:12:42,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2065538890, now seen corresponding path program 1 times [2023-04-01 23:12:42,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:12:42,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137647901] [2023-04-01 23:12:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:42,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:12:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:42,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:12:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:42,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:12:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:42,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:12:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:42,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-04-01 23:12:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:42,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:12:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2023-04-01 23:12:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:43,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 140 proven. 5 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2023-04-01 23:12:43,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:12:43,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137647901] [2023-04-01 23:12:43,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137647901] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:12:43,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079703307] [2023-04-01 23:12:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:43,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:43,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:12:43,085 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:12:43,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:12:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:43,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:12:43,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:12:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2023-04-01 23:12:43,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:12:43,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079703307] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:12:43,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:12:43,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:12:43,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684482575] [2023-04-01 23:12:43,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:12:43,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:12:43,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:12:43,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:12:43,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:12:43,339 INFO L87 Difference]: Start difference. First operand 7934 states and 8454 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 23:12:43,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:12:43,992 INFO L93 Difference]: Finished difference Result 15519 states and 16546 transitions. [2023-04-01 23:12:43,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:12:43,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 744 [2023-04-01 23:12:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:12:44,007 INFO L225 Difference]: With dead ends: 15519 [2023-04-01 23:12:44,007 INFO L226 Difference]: Without dead ends: 7934 [2023-04-01 23:12:44,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 760 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:12:44,017 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 346 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:12:44,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 412 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 23:12:44,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7934 states. [2023-04-01 23:12:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7934 to 7934. [2023-04-01 23:12:44,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7934 states, 7758 states have (on average 1.0390564578499613) internal successors, (8061), 7824 states have internal predecessors, (8061), 49 states have call successors, (49), 48 states have call predecessors, (49), 126 states have return successors, (313), 61 states have call predecessors, (313), 48 states have call successors, (313) [2023-04-01 23:12:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7934 states to 7934 states and 8423 transitions. [2023-04-01 23:12:44,120 INFO L78 Accepts]: Start accepts. Automaton has 7934 states and 8423 transitions. Word has length 744 [2023-04-01 23:12:44,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:12:44,121 INFO L495 AbstractCegarLoop]: Abstraction has 7934 states and 8423 transitions. [2023-04-01 23:12:44,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 23:12:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7934 states and 8423 transitions. [2023-04-01 23:12:44,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2023-04-01 23:12:44,137 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:12:44,137 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2023-04-01 23:12:44,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:12:44,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:44,344 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:12:44,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:12:44,344 INFO L85 PathProgramCache]: Analyzing trace with hash -251056054, now seen corresponding path program 1 times [2023-04-01 23:12:44,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:12:44,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337002751] [2023-04-01 23:12:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:44,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:12:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:45,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:12:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:45,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:12:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-04-01 23:12:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-04-01 23:12:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:45,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:12:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:45,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2023-04-01 23:12:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:45,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2023-04-01 23:12:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:45,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:12:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 527 proven. 142 refuted. 0 times theorem prover too weak. 1217 trivial. 0 not checked. [2023-04-01 23:12:45,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:12:45,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337002751] [2023-04-01 23:12:45,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337002751] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:12:45,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375499855] [2023-04-01 23:12:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:45,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:45,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:12:45,933 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:12:45,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:12:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:46,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:12:46,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:12:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 732 proven. 0 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2023-04-01 23:12:46,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:12:46,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375499855] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:12:46,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:12:46,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-04-01 23:12:46,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180118234] [2023-04-01 23:12:46,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:12:46,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:12:46,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:12:46,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:12:46,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:12:46,951 INFO L87 Difference]: Start difference. First operand 7934 states and 8423 transitions. Second operand has 5 states, 5 states have (on average 117.0) internal successors, (585), 4 states have internal predecessors, (585), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 23:12:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:12:47,990 INFO L93 Difference]: Finished difference Result 16889 states and 17937 transitions. [2023-04-01 23:12:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 23:12:47,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 117.0) internal successors, (585), 4 states have internal predecessors, (585), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 1078 [2023-04-01 23:12:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:12:48,005 INFO L225 Difference]: With dead ends: 16889 [2023-04-01 23:12:48,005 INFO L226 Difference]: Without dead ends: 9302 [2023-04-01 23:12:48,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1106 GetRequests, 1092 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:12:48,016 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 530 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:12:48,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 86 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 23:12:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9302 states. [2023-04-01 23:12:48,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9302 to 8612. [2023-04-01 23:12:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8612 states, 8425 states have (on average 1.0373887240356083) internal successors, (8740), 8495 states have internal predecessors, (8740), 52 states have call successors, (52), 52 states have call predecessors, (52), 134 states have return successors, (338), 64 states have call predecessors, (338), 51 states have call successors, (338) [2023-04-01 23:12:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8612 states to 8612 states and 9130 transitions. [2023-04-01 23:12:48,183 INFO L78 Accepts]: Start accepts. Automaton has 8612 states and 9130 transitions. Word has length 1078 [2023-04-01 23:12:48,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:12:48,183 INFO L495 AbstractCegarLoop]: Abstraction has 8612 states and 9130 transitions. [2023-04-01 23:12:48,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.0) internal successors, (585), 4 states have internal predecessors, (585), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 23:12:48,184 INFO L276 IsEmpty]: Start isEmpty. Operand 8612 states and 9130 transitions. [2023-04-01 23:12:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2023-04-01 23:12:48,205 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:12:48,206 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:12:48,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 23:12:48,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-04-01 23:12:48,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:12:48,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:12:48,413 INFO L85 PathProgramCache]: Analyzing trace with hash -423972487, now seen corresponding path program 1 times [2023-04-01 23:12:48,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:12:48,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700641817] [2023-04-01 23:12:48,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:48,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:12:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:49,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:12:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:49,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:12:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-01 23:12:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:49,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-04-01 23:12:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2023-04-01 23:12:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:49,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2023-04-01 23:12:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:49,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2023-04-01 23:12:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 858 [2023-04-01 23:12:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:49,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:12:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2784 backedges. 696 proven. 143 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2023-04-01 23:12:49,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:12:49,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700641817] [2023-04-01 23:12:49,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700641817] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:12:49,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983923236] [2023-04-01 23:12:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:49,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:49,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:12:49,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:12:50,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:12:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:50,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:12:50,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:12:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2784 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 2167 trivial. 0 not checked. [2023-04-01 23:12:50,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:12:50,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983923236] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:12:50,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:12:50,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-04-01 23:12:50,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135341130] [2023-04-01 23:12:50,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:12:50,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:12:50,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:12:50,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:12:50,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:12:50,461 INFO L87 Difference]: Start difference. First operand 8612 states and 9130 transitions. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 4 states have internal predecessors, (437), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 23:12:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:12:51,724 INFO L93 Difference]: Finished difference Result 23675 states and 25278 transitions. [2023-04-01 23:12:51,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:12:51,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 4 states have internal predecessors, (437), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 1214 [2023-04-01 23:12:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:12:51,749 INFO L225 Difference]: With dead ends: 23675 [2023-04-01 23:12:51,749 INFO L226 Difference]: Without dead ends: 15069 [2023-04-01 23:12:51,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1243 GetRequests, 1230 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:12:51,765 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 838 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:12:51,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 68 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 23:12:51,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15069 states. [2023-04-01 23:12:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15069 to 14720. [2023-04-01 23:12:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14720 states, 14441 states have (on average 1.0369088013295478) internal successors, (14974), 14529 states have internal predecessors, (14974), 88 states have call successors, (88), 88 states have call predecessors, (88), 190 states have return successors, (631), 102 states have call predecessors, (631), 87 states have call successors, (631) [2023-04-01 23:12:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14720 states to 14720 states and 15693 transitions. [2023-04-01 23:12:52,020 INFO L78 Accepts]: Start accepts. Automaton has 14720 states and 15693 transitions. Word has length 1214 [2023-04-01 23:12:52,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:12:52,021 INFO L495 AbstractCegarLoop]: Abstraction has 14720 states and 15693 transitions. [2023-04-01 23:12:52,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 4 states have internal predecessors, (437), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 23:12:52,021 INFO L276 IsEmpty]: Start isEmpty. Operand 14720 states and 15693 transitions. [2023-04-01 23:12:52,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1319 [2023-04-01 23:12:52,044 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:12:52,044 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:12:52,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-01 23:12:52,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 23:12:52,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:12:52,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:12:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1545791623, now seen corresponding path program 1 times [2023-04-01 23:12:52,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:12:52,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313164095] [2023-04-01 23:12:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:52,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:12:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:12:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:53,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:12:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:53,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:12:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2023-04-01 23:12:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:54,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2023-04-01 23:12:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:54,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 710 [2023-04-01 23:12:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2023-04-01 23:12:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:54,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 962 [2023-04-01 23:12:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:12:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2858 backedges. 417 proven. 702 refuted. 0 times theorem prover too weak. 1739 trivial. 0 not checked. [2023-04-01 23:12:54,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:12:54,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313164095] [2023-04-01 23:12:54,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313164095] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:12:54,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539264765] [2023-04-01 23:12:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:12:54,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:12:54,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:12:54,265 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:12:54,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:12:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:12:54,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:12:54,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:12:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2858 backedges. 2049 proven. 2 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2023-04-01 23:12:54,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:12:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2858 backedges. 559 proven. 392 refuted. 0 times theorem prover too weak. 1907 trivial. 0 not checked. [2023-04-01 23:12:55,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539264765] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:12:55,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:12:55,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-04-01 23:12:55,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765000828] [2023-04-01 23:12:55,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:12:55,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:12:55,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:12:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:12:55,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:12:55,255 INFO L87 Difference]: Start difference. First operand 14720 states and 15693 transitions. Second operand has 13 states, 13 states have (on average 93.15384615384616) internal successors, (1211), 11 states have internal predecessors, (1211), 5 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 23:12:59,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:12:59,492 INFO L93 Difference]: Finished difference Result 31145 states and 33217 transitions. [2023-04-01 23:12:59,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-01 23:12:59,493 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 93.15384615384616) internal successors, (1211), 11 states have internal predecessors, (1211), 5 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 1318 [2023-04-01 23:12:59,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:12:59,568 INFO L225 Difference]: With dead ends: 31145 [2023-04-01 23:12:59,569 INFO L226 Difference]: Without dead ends: 16768 [2023-04-01 23:12:59,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2709 GetRequests, 2669 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2023-04-01 23:12:59,588 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 5591 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 6543 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5591 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 6975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 6543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:12:59,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5591 Valid, 140 Invalid, 6975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 6543 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 23:12:59,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16768 states. [2023-04-01 23:12:59,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16768 to 16068. [2023-04-01 23:12:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16068 states, 15773 states have (on average 1.0316363405820073) internal successors, (16272), 15861 states have internal predecessors, (16272), 96 states have call successors, (96), 96 states have call predecessors, (96), 198 states have return successors, (595), 110 states have call predecessors, (595), 95 states have call successors, (595) [2023-04-01 23:12:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16068 states to 16068 states and 16963 transitions. [2023-04-01 23:12:59,969 INFO L78 Accepts]: Start accepts. Automaton has 16068 states and 16963 transitions. Word has length 1318 [2023-04-01 23:12:59,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:12:59,969 INFO L495 AbstractCegarLoop]: Abstraction has 16068 states and 16963 transitions. [2023-04-01 23:12:59,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 93.15384615384616) internal successors, (1211), 11 states have internal predecessors, (1211), 5 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-04-01 23:12:59,969 INFO L276 IsEmpty]: Start isEmpty. Operand 16068 states and 16963 transitions. [2023-04-01 23:12:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1363 [2023-04-01 23:12:59,994 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:12:59,995 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2023-04-01 23:13:00,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 23:13:00,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 23:13:00,202 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:13:00,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:13:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1852404514, now seen corresponding path program 1 times [2023-04-01 23:13:00,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:13:00,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295198761] [2023-04-01 23:13:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:00,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:13:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:01,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:13:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:01,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:13:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:01,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:13:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2023-04-01 23:13:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:01,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2023-04-01 23:13:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2023-04-01 23:13:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:01,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2023-04-01 23:13:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:02,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:13:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:02,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2767 backedges. 879 proven. 284 refuted. 0 times theorem prover too weak. 1604 trivial. 0 not checked. [2023-04-01 23:13:02,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:13:02,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295198761] [2023-04-01 23:13:02,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295198761] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:13:02,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181917557] [2023-04-01 23:13:02,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:02,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:13:02,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:13:02,052 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:13:02,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:13:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:02,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 23:13:02,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:13:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2767 backedges. 1619 proven. 2 refuted. 0 times theorem prover too weak. 1146 trivial. 0 not checked. [2023-04-01 23:13:03,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:13:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2767 backedges. 155 proven. 1546 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-04-01 23:13:05,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181917557] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:13:05,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:13:05,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-04-01 23:13:05,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199961297] [2023-04-01 23:13:05,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:13:05,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-01 23:13:05,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:13:05,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-01 23:13:05,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:13:05,757 INFO L87 Difference]: Start difference. First operand 16068 states and 16963 transitions. Second operand has 20 states, 20 states have (on average 87.35) internal successors, (1747), 18 states have internal predecessors, (1747), 8 states have call successors, (18), 11 states have call predecessors, (18), 10 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-04-01 23:13:13,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:13:13,036 INFO L93 Difference]: Finished difference Result 37617 states and 39914 transitions. [2023-04-01 23:13:13,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-04-01 23:13:13,037 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 87.35) internal successors, (1747), 18 states have internal predecessors, (1747), 8 states have call successors, (18), 11 states have call predecessors, (18), 10 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 1362 [2023-04-01 23:13:13,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:13:13,070 INFO L225 Difference]: With dead ends: 37617 [2023-04-01 23:13:13,070 INFO L226 Difference]: Without dead ends: 21892 [2023-04-01 23:13:13,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2862 GetRequests, 2781 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2181 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=991, Invalid=5651, Unknown=0, NotChecked=0, Total=6642 [2023-04-01 23:13:13,085 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 22170 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 9422 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22170 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 10425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 9422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:13:13,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22170 Valid, 357 Invalid, 10425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 9422 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-04-01 23:13:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21892 states. [2023-04-01 23:13:13,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21892 to 20139. [2023-04-01 23:13:13,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20139 states, 19783 states have (on average 1.0278521963301825) internal successors, (20334), 19883 states have internal predecessors, (20334), 120 states have call successors, (120), 120 states have call predecessors, (120), 235 states have return successors, (687), 135 states have call predecessors, (687), 119 states have call successors, (687) [2023-04-01 23:13:13,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20139 states to 20139 states and 21141 transitions. [2023-04-01 23:13:13,333 INFO L78 Accepts]: Start accepts. Automaton has 20139 states and 21141 transitions. Word has length 1362 [2023-04-01 23:13:13,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:13:13,333 INFO L495 AbstractCegarLoop]: Abstraction has 20139 states and 21141 transitions. [2023-04-01 23:13:13,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 87.35) internal successors, (1747), 18 states have internal predecessors, (1747), 8 states have call successors, (18), 11 states have call predecessors, (18), 10 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-04-01 23:13:13,334 INFO L276 IsEmpty]: Start isEmpty. Operand 20139 states and 21141 transitions. [2023-04-01 23:13:13,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1532 [2023-04-01 23:13:13,363 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:13:13,363 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-04-01 23:13:13,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:13:13,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 23:13:13,570 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:13:13,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:13:13,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1183173595, now seen corresponding path program 1 times [2023-04-01 23:13:13,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:13:13,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123935878] [2023-04-01 23:13:13,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:13,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:13:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:13:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:15,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:13:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:15,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:13:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:15,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:13:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:15,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 23:13:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2023-04-01 23:13:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2023-04-01 23:13:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1065 [2023-04-01 23:13:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:15,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1175 [2023-04-01 23:13:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:15,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:13:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4092 backedges. 1357 proven. 23 refuted. 0 times theorem prover too weak. 2712 trivial. 0 not checked. [2023-04-01 23:13:15,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:13:15,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123935878] [2023-04-01 23:13:15,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123935878] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:13:15,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742995893] [2023-04-01 23:13:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:15,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:13:15,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:13:15,804 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:13:15,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:13:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:16,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 1989 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 23:13:16,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:13:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4092 backedges. 1367 proven. 2 refuted. 0 times theorem prover too weak. 2723 trivial. 0 not checked. [2023-04-01 23:13:17,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:13:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4092 backedges. 1367 proven. 2 refuted. 0 times theorem prover too weak. 2723 trivial. 0 not checked. [2023-04-01 23:13:21,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742995893] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:13:21,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:13:21,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 6] total 15 [2023-04-01 23:13:21,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452757124] [2023-04-01 23:13:21,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:13:21,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:13:21,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:13:21,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:13:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:13:21,590 INFO L87 Difference]: Start difference. First operand 20139 states and 21141 transitions. Second operand has 15 states, 15 states have (on average 84.4) internal successors, (1266), 13 states have internal predecessors, (1266), 9 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-04-01 23:13:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:13:26,036 INFO L93 Difference]: Finished difference Result 40616 states and 42658 transitions. [2023-04-01 23:13:26,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-01 23:13:26,037 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 84.4) internal successors, (1266), 13 states have internal predecessors, (1266), 9 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 1531 [2023-04-01 23:13:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:13:26,070 INFO L225 Difference]: With dead ends: 40616 [2023-04-01 23:13:26,071 INFO L226 Difference]: Without dead ends: 20822 [2023-04-01 23:13:26,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3144 GetRequests, 3101 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=396, Invalid=1410, Unknown=0, NotChecked=0, Total=1806 [2023-04-01 23:13:26,091 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 4784 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 6813 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 7139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 6813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:13:26,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4784 Valid, 262 Invalid, 7139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 6813 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 23:13:26,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20822 states. [2023-04-01 23:13:26,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20822 to 20132. [2023-04-01 23:13:26,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20132 states, 19779 states have (on average 1.023813135143334) internal successors, (20250), 19877 states have internal predecessors, (20250), 120 states have call successors, (120), 120 states have call predecessors, (120), 232 states have return successors, (598), 134 states have call predecessors, (598), 119 states have call successors, (598) [2023-04-01 23:13:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20132 states to 20132 states and 20968 transitions. [2023-04-01 23:13:26,343 INFO L78 Accepts]: Start accepts. Automaton has 20132 states and 20968 transitions. Word has length 1531 [2023-04-01 23:13:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:13:26,344 INFO L495 AbstractCegarLoop]: Abstraction has 20132 states and 20968 transitions. [2023-04-01 23:13:26,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.4) internal successors, (1266), 13 states have internal predecessors, (1266), 9 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-04-01 23:13:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 20132 states and 20968 transitions. [2023-04-01 23:13:26,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1873 [2023-04-01 23:13:26,376 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:13:26,377 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:13:26,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 23:13:26,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:13:26,605 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:13:26,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:13:26,605 INFO L85 PathProgramCache]: Analyzing trace with hash 301191537, now seen corresponding path program 1 times [2023-04-01 23:13:26,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:13:26,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464789549] [2023-04-01 23:13:26,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:26,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:13:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:28,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:13:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:28,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:13:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:28,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:13:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:28,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:13:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 23:13:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:28,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2023-04-01 23:13:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2023-04-01 23:13:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:28,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1034 [2023-04-01 23:13:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:28,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1307 [2023-04-01 23:13:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:29,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1561 [2023-04-01 23:13:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:29,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1726 [2023-04-01 23:13:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6610 backedges. 1625 proven. 297 refuted. 0 times theorem prover too weak. 4688 trivial. 0 not checked. [2023-04-01 23:13:29,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:13:29,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464789549] [2023-04-01 23:13:29,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464789549] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:13:29,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712251269] [2023-04-01 23:13:29,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:29,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:13:29,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:13:29,085 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:13:29,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 23:13:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:29,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 2377 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 23:13:29,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:13:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6610 backedges. 4061 proven. 2 refuted. 0 times theorem prover too weak. 2547 trivial. 0 not checked. [2023-04-01 23:13:29,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:13:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6610 backedges. 732 proven. 567 refuted. 0 times theorem prover too weak. 5311 trivial. 0 not checked. [2023-04-01 23:13:30,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712251269] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:13:30,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:13:30,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 23:13:30,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973930749] [2023-04-01 23:13:30,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:13:30,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:13:30,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:13:30,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:13:30,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:13:30,385 INFO L87 Difference]: Start difference. First operand 20132 states and 20968 transitions. Second operand has 15 states, 15 states have (on average 70.0) internal successors, (1050), 13 states have internal predecessors, (1050), 6 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 23:13:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:13:37,368 INFO L93 Difference]: Finished difference Result 42309 states and 44164 transitions. [2023-04-01 23:13:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-04-01 23:13:37,368 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 70.0) internal successors, (1050), 13 states have internal predecessors, (1050), 6 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 1872 [2023-04-01 23:13:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:13:37,401 INFO L225 Difference]: With dead ends: 42309 [2023-04-01 23:13:37,401 INFO L226 Difference]: Without dead ends: 21833 [2023-04-01 23:13:37,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3882 GetRequests, 3812 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=859, Invalid=4111, Unknown=0, NotChecked=0, Total=4970 [2023-04-01 23:13:37,428 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 5716 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 10680 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5716 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 11210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 10680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:13:37,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5716 Valid, 295 Invalid, 11210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 10680 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-01 23:13:37,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21833 states. [2023-04-01 23:13:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21833 to 20467. [2023-04-01 23:13:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20467 states, 20110 states have (on average 1.0218299353555444) internal successors, (20549), 20210 states have internal predecessors, (20549), 122 states have call successors, (122), 122 states have call predecessors, (122), 234 states have return successors, (569), 134 states have call predecessors, (569), 121 states have call successors, (569) [2023-04-01 23:13:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20467 states to 20467 states and 21240 transitions. [2023-04-01 23:13:37,814 INFO L78 Accepts]: Start accepts. Automaton has 20467 states and 21240 transitions. Word has length 1872 [2023-04-01 23:13:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:13:37,815 INFO L495 AbstractCegarLoop]: Abstraction has 20467 states and 21240 transitions. [2023-04-01 23:13:37,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 70.0) internal successors, (1050), 13 states have internal predecessors, (1050), 6 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-04-01 23:13:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 20467 states and 21240 transitions. [2023-04-01 23:13:37,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2025 [2023-04-01 23:13:37,849 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:13:37,850 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:37,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-01 23:13:38,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 23:13:38,058 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:13:38,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:13:38,059 INFO L85 PathProgramCache]: Analyzing trace with hash 215284388, now seen corresponding path program 1 times [2023-04-01 23:13:38,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:13:38,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154138588] [2023-04-01 23:13:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:38,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:13:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:38,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:13:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:13:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:38,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:13:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:38,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:13:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:38,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 23:13:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:38,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2023-04-01 23:13:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:39,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2023-04-01 23:13:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:39,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1065 [2023-04-01 23:13:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:39,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1175 [2023-04-01 23:13:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:39,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1459 [2023-04-01 23:13:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:39,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1713 [2023-04-01 23:13:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1878 [2023-04-01 23:13:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8079 backedges. 1453 proven. 2 refuted. 0 times theorem prover too weak. 6624 trivial. 0 not checked. [2023-04-01 23:13:39,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:13:39,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154138588] [2023-04-01 23:13:39,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154138588] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:13:39,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557761452] [2023-04-01 23:13:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:39,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:13:39,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:13:39,388 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:13:39,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 23:13:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:39,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:13:39,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:13:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8079 backedges. 5174 proven. 10 refuted. 0 times theorem prover too weak. 2895 trivial. 0 not checked. [2023-04-01 23:13:40,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:13:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8079 backedges. 1757 proven. 287 refuted. 0 times theorem prover too weak. 6035 trivial. 0 not checked. [2023-04-01 23:13:44,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557761452] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:13:44,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:13:44,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 15 [2023-04-01 23:13:44,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17898452] [2023-04-01 23:13:44,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:13:44,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:13:44,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:13:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:13:44,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:13:44,165 INFO L87 Difference]: Start difference. First operand 20467 states and 21240 transitions. Second operand has 15 states, 15 states have (on average 91.73333333333333) internal successors, (1376), 13 states have internal predecessors, (1376), 6 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 23:13:48,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:13:48,014 INFO L93 Difference]: Finished difference Result 43382 states and 45089 transitions. [2023-04-01 23:13:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-04-01 23:13:48,014 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 91.73333333333333) internal successors, (1376), 13 states have internal predecessors, (1376), 6 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 2024 [2023-04-01 23:13:48,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:13:48,048 INFO L225 Difference]: With dead ends: 43382 [2023-04-01 23:13:48,048 INFO L226 Difference]: Without dead ends: 23260 [2023-04-01 23:13:48,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4154 GetRequests, 4099 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=527, Invalid=2553, Unknown=0, NotChecked=0, Total=3080 [2023-04-01 23:13:48,072 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7007 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4941 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7007 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 5696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 4941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:13:48,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7007 Valid, 221 Invalid, 5696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 4941 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 23:13:48,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23260 states. [2023-04-01 23:13:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23260 to 22203. [2023-04-01 23:13:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22203 states, 21803 states have (on average 1.0180250424253543) internal successors, (22196), 21921 states have internal predecessors, (22196), 132 states have call successors, (132), 132 states have call predecessors, (132), 267 states have return successors, (543), 149 states have call predecessors, (543), 131 states have call successors, (543) [2023-04-01 23:13:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22203 states to 22203 states and 22871 transitions. [2023-04-01 23:13:48,367 INFO L78 Accepts]: Start accepts. Automaton has 22203 states and 22871 transitions. Word has length 2024 [2023-04-01 23:13:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:13:48,367 INFO L495 AbstractCegarLoop]: Abstraction has 22203 states and 22871 transitions. [2023-04-01 23:13:48,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 91.73333333333333) internal successors, (1376), 13 states have internal predecessors, (1376), 6 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-01 23:13:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 22203 states and 22871 transitions. [2023-04-01 23:13:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2299 [2023-04-01 23:13:48,449 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:13:48,450 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:13:48,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-01 23:13:48,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:13:48,657 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:13:48,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:13:48,658 INFO L85 PathProgramCache]: Analyzing trace with hash -638167932, now seen corresponding path program 1 times [2023-04-01 23:13:48,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:13:48,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498199591] [2023-04-01 23:13:48,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:48,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:13:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:13:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:13:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:13:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:13:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-04-01 23:13:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2023-04-01 23:13:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 931 [2023-04-01 23:13:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1014 [2023-04-01 23:13:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1202 [2023-04-01 23:13:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1312 [2023-04-01 23:13:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1596 [2023-04-01 23:13:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1667 [2023-04-01 23:13:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1921 [2023-04-01 23:13:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2152 [2023-04-01 23:13:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10289 backedges. 843 proven. 565 refuted. 0 times theorem prover too weak. 8881 trivial. 0 not checked. [2023-04-01 23:13:50,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:13:50,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498199591] [2023-04-01 23:13:50,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498199591] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:13:50,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558322608] [2023-04-01 23:13:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:50,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:13:50,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:13:50,554 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:13:50,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-01 23:13:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:51,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 2913 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:13:51,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:13:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10289 backedges. 6027 proven. 2 refuted. 0 times theorem prover too weak. 4260 trivial. 0 not checked. [2023-04-01 23:13:51,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:13:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10289 backedges. 851 proven. 557 refuted. 0 times theorem prover too weak. 8881 trivial. 0 not checked. [2023-04-01 23:13:51,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558322608] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:13:51,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:13:51,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2023-04-01 23:13:51,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035772388] [2023-04-01 23:13:51,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:13:51,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:13:51,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:13:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:13:51,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:13:51,492 INFO L87 Difference]: Start difference. First operand 22203 states and 22871 transitions. Second operand has 12 states, 12 states have (on average 69.33333333333333) internal successors, (832), 10 states have internal predecessors, (832), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 23:13:54,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:13:54,569 INFO L93 Difference]: Finished difference Result 45756 states and 47140 transitions. [2023-04-01 23:13:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 23:13:54,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 69.33333333333333) internal successors, (832), 10 states have internal predecessors, (832), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 2298 [2023-04-01 23:13:54,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:13:54,604 INFO L225 Difference]: With dead ends: 45756 [2023-04-01 23:13:54,604 INFO L226 Difference]: Without dead ends: 23898 [2023-04-01 23:13:54,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4659 GetRequests, 4632 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2023-04-01 23:13:54,630 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 4971 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 3771 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4979 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 4211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 3771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:13:54,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4979 Valid, 79 Invalid, 4211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 3771 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 23:13:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23898 states. [2023-04-01 23:13:55,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23898 to 21527. [2023-04-01 23:13:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21527 states, 21136 states have (on average 1.0160862982588947) internal successors, (21476), 21253 states have internal predecessors, (21476), 128 states have call successors, (128), 128 states have call predecessors, (128), 262 states have return successors, (485), 145 states have call predecessors, (485), 127 states have call successors, (485) [2023-04-01 23:13:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21527 states to 21527 states and 22089 transitions. [2023-04-01 23:13:55,034 INFO L78 Accepts]: Start accepts. Automaton has 21527 states and 22089 transitions. Word has length 2298 [2023-04-01 23:13:55,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:13:55,035 INFO L495 AbstractCegarLoop]: Abstraction has 21527 states and 22089 transitions. [2023-04-01 23:13:55,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.33333333333333) internal successors, (832), 10 states have internal predecessors, (832), 5 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-01 23:13:55,035 INFO L276 IsEmpty]: Start isEmpty. Operand 21527 states and 22089 transitions. [2023-04-01 23:13:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2363 [2023-04-01 23:13:55,074 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:13:55,075 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 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 23:13:55,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-04-01 23:13:55,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-01 23:13:55,283 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:13:55,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:13:55,283 INFO L85 PathProgramCache]: Analyzing trace with hash 733839707, now seen corresponding path program 1 times [2023-04-01 23:13:55,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:13:55,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983536813] [2023-04-01 23:13:55,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:55,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:13:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:58,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:13:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:58,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:13:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:58,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:13:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:58,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:13:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:58,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-04-01 23:13:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2023-04-01 23:13:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:58,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1078 [2023-04-01 23:13:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:58,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1266 [2023-04-01 23:13:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1376 [2023-04-01 23:13:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:59,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1660 [2023-04-01 23:13:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1731 [2023-04-01 23:13:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:59,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1985 [2023-04-01 23:13:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:59,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2216 [2023-04-01 23:13:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10165 backedges. 1906 proven. 2218 refuted. 0 times theorem prover too weak. 6041 trivial. 0 not checked. [2023-04-01 23:13:59,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:13:59,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983536813] [2023-04-01 23:13:59,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983536813] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:13:59,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114911987] [2023-04-01 23:13:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:13:59,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:13:59,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:13:59,201 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:13:59,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-04-01 23:13:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:13:59,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:13:59,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:14:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 10165 backedges. 5069 proven. 2 refuted. 0 times theorem prover too weak. 5094 trivial. 0 not checked. [2023-04-01 23:14:00,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:14:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10165 backedges. 811 proven. 1538 refuted. 0 times theorem prover too weak. 7816 trivial. 0 not checked. [2023-04-01 23:14:03,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114911987] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:14:03,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:14:03,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2023-04-01 23:14:03,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159856066] [2023-04-01 23:14:03,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:14:03,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 23:14:03,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:03,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 23:14:03,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-04-01 23:14:03,197 INFO L87 Difference]: Start difference. First operand 21527 states and 22089 transitions. Second operand has 16 states, 16 states have (on average 101.25) internal successors, (1620), 14 states have internal predecessors, (1620), 7 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 23:14:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:09,443 INFO L93 Difference]: Finished difference Result 43104 states and 44287 transitions. [2023-04-01 23:14:09,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-04-01 23:14:09,444 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 101.25) internal successors, (1620), 14 states have internal predecessors, (1620), 7 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 2362 [2023-04-01 23:14:09,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:09,480 INFO L225 Difference]: With dead ends: 43104 [2023-04-01 23:14:09,480 INFO L226 Difference]: Without dead ends: 21922 [2023-04-01 23:14:09,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4879 GetRequests, 4799 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2038 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=944, Invalid=5536, Unknown=0, NotChecked=0, Total=6480 [2023-04-01 23:14:09,507 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 6214 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 9705 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6214 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 10141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 9705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:09,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6214 Valid, 398 Invalid, 10141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 9705 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-01 23:14:09,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21922 states. [2023-04-01 23:14:09,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21922 to 20512. [2023-04-01 23:14:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20512 states, 20135 states have (on average 1.0132108269183016) internal successors, (20401), 20250 states have internal predecessors, (20401), 122 states have call successors, (122), 122 states have call predecessors, (122), 254 states have return successors, (387), 139 states have call predecessors, (387), 121 states have call successors, (387) [2023-04-01 23:14:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20512 states to 20512 states and 20910 transitions. [2023-04-01 23:14:09,782 INFO L78 Accepts]: Start accepts. Automaton has 20512 states and 20910 transitions. Word has length 2362 [2023-04-01 23:14:09,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:09,782 INFO L495 AbstractCegarLoop]: Abstraction has 20512 states and 20910 transitions. [2023-04-01 23:14:09,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 101.25) internal successors, (1620), 14 states have internal predecessors, (1620), 7 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 23:14:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 20512 states and 20910 transitions. [2023-04-01 23:14:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2402 [2023-04-01 23:14:09,826 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:09,827 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-04-01 23:14:09,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-04-01 23:14:10,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-04-01 23:14:10,035 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:10,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:10,036 INFO L85 PathProgramCache]: Analyzing trace with hash 424381611, now seen corresponding path program 1 times [2023-04-01 23:14:10,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:10,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196785098] [2023-04-01 23:14:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:10,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:14:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:14:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2023-04-01 23:14:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2023-04-01 23:14:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 904 [2023-04-01 23:14:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:14:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1231 [2023-04-01 23:14:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1305 [2023-04-01 23:14:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1415 [2023-04-01 23:14:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1699 [2023-04-01 23:14:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1770 [2023-04-01 23:14:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2024 [2023-04-01 23:14:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2255 [2023-04-01 23:14:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10686 backedges. 1799 proven. 694 refuted. 0 times theorem prover too weak. 8193 trivial. 0 not checked. [2023-04-01 23:14:12,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:12,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196785098] [2023-04-01 23:14:12,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196785098] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:14:12,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129771172] [2023-04-01 23:14:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:12,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:12,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:14:12,890 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:14:12,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-04-01 23:14:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:13,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:14:13,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:14:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10686 backedges. 6417 proven. 2 refuted. 0 times theorem prover too weak. 4267 trivial. 0 not checked. [2023-04-01 23:14:13,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:14:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10686 backedges. 1189 proven. 503 refuted. 0 times theorem prover too weak. 8994 trivial. 0 not checked. [2023-04-01 23:14:14,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129771172] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:14:14,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:14:14,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 23:14:14,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561190949] [2023-04-01 23:14:14,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:14:14,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:14:14,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:14:14,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:14:14,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:14:14,909 INFO L87 Difference]: Start difference. First operand 20512 states and 20910 transitions. Second operand has 14 states, 14 states have (on average 81.07142857142857) internal successors, (1135), 12 states have internal predecessors, (1135), 6 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 23:14:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:14:20,666 INFO L93 Difference]: Finished difference Result 43100 states and 43962 transitions. [2023-04-01 23:14:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-04-01 23:14:20,666 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 81.07142857142857) internal successors, (1135), 12 states have internal predecessors, (1135), 6 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 2401 [2023-04-01 23:14:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:14:20,709 INFO L225 Difference]: With dead ends: 43100 [2023-04-01 23:14:20,709 INFO L226 Difference]: Without dead ends: 22933 [2023-04-01 23:14:20,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4919 GetRequests, 4862 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=534, Invalid=2772, Unknown=0, NotChecked=0, Total=3306 [2023-04-01 23:14:20,726 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 8132 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 8009 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8138 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 8632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 8009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:14:20,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8138 Valid, 242 Invalid, 8632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [623 Valid, 8009 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-01 23:14:20,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22933 states. [2023-04-01 23:14:20,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22933 to 21896. [2023-04-01 23:14:20,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21896 states, 21486 states have (on average 1.0129386577306152) internal successors, (21764), 21616 states have internal predecessors, (21764), 130 states have call successors, (130), 130 states have call predecessors, (130), 279 states have return successors, (411), 149 states have call predecessors, (411), 129 states have call successors, (411) [2023-04-01 23:14:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21896 states to 21896 states and 22305 transitions. [2023-04-01 23:14:20,996 INFO L78 Accepts]: Start accepts. Automaton has 21896 states and 22305 transitions. Word has length 2401 [2023-04-01 23:14:20,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:14:20,997 INFO L495 AbstractCegarLoop]: Abstraction has 21896 states and 22305 transitions. [2023-04-01 23:14:20,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 81.07142857142857) internal successors, (1135), 12 states have internal predecessors, (1135), 6 states have call successors, (15), 7 states have call predecessors, (15), 8 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 23:14:20,997 INFO L276 IsEmpty]: Start isEmpty. Operand 21896 states and 22305 transitions. [2023-04-01 23:14:21,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2565 [2023-04-01 23:14:21,041 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:14:21,042 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 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] [2023-04-01 23:14:21,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-04-01 23:14:21,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-01 23:14:21,249 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:14:21,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:14:21,249 INFO L85 PathProgramCache]: Analyzing trace with hash 408447182, now seen corresponding path program 1 times [2023-04-01 23:14:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:14:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394807517] [2023-04-01 23:14:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:21,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:14:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:14:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:24,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:14:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-04-01 23:14:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:24,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-04-01 23:14:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2023-04-01 23:14:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:24,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2023-04-01 23:14:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 904 [2023-04-01 23:14:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:14:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:24,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1231 [2023-04-01 23:14:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:24,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1305 [2023-04-01 23:14:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1578 [2023-04-01 23:14:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:25,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1862 [2023-04-01 23:14:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:25,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1933 [2023-04-01 23:14:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:25,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2187 [2023-04-01 23:14:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2418 [2023-04-01 23:14:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 11637 backedges. 3188 proven. 1358 refuted. 0 times theorem prover too weak. 7091 trivial. 0 not checked. [2023-04-01 23:14:25,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:14:25,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394807517] [2023-04-01 23:14:25,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394807517] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:14:25,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828689856] [2023-04-01 23:14:25,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:14:25,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:14:25,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:14:25,505 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:14:25,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-04-01 23:14:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:14:26,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:14:26,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:15:13,257 WARN L223 SmtUtils]: Spent 39.37s on a formula simplification. DAG size of input: 530 DAG size of output: 261 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 23:15:30,408 WARN L223 SmtUtils]: Spent 12.40s on a formula simplification that was a NOOP. DAG size: 250 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 23:15:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 11637 backedges. 8064 proven. 10 refuted. 0 times theorem prover too weak. 3563 trivial. 0 not checked. [2023-04-01 23:15:31,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:15:39,146 INFO L134 CoverageAnalysis]: Checked inductivity of 11637 backedges. 1973 proven. 674 refuted. 0 times theorem prover too weak. 8990 trivial. 0 not checked. [2023-04-01 23:15:39,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828689856] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:15:39,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:15:39,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 5] total 21 [2023-04-01 23:15:39,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995612414] [2023-04-01 23:15:39,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:15:39,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 23:15:39,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:15:39,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 23:15:39,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=340, Unknown=2, NotChecked=0, Total=420 [2023-04-01 23:15:39,151 INFO L87 Difference]: Start difference. First operand 21896 states and 22305 transitions. Second operand has 21 states, 20 states have (on average 99.65) internal successors, (1993), 19 states have internal predecessors, (1993), 8 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-04-01 23:15:49,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:15:54,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 23:16:06,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]