/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/Problem12_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:29:58,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:29:58,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:29:58,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:29:58,367 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 22:29:58,395 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:29:58,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:29:58,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:29:58,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:29:58,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:29:58,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:29:58,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:29:58,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:29:58,398 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:29:58,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:29:58,399 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:29:58,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:29:58,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:29:58,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:29:58,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:29:58,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:29:58,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:29:58,400 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:29:58,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:29:58,400 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:29:58,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:29:58,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:29:58,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:29:58,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:29:58,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:29:58,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:29:58,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:29:58,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:29:58,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:29:58,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:29:58,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:29:58,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:29:58,401 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:29:58,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:29:58,402 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:29:58,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:29:58,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:29:58,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:29:58,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:29:58,662 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:29:58,663 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:29:58,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label39.c [2023-04-01 22:29:59,779 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:30:00,195 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:30:00,196 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label39.c [2023-04-01 22:30:00,226 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffdb592c5/67f5542f6295467b8679ccd975051983/FLAG36d14da89 [2023-04-01 22:30:00,239 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffdb592c5/67f5542f6295467b8679ccd975051983 [2023-04-01 22:30:00,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:30:00,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:30:00,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:30:00,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:30:00,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:30:00,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:30:00" (1/1) ... [2023-04-01 22:30:00,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee9a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:30:00, skipping insertion in model container [2023-04-01 22:30:00,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:30:00" (1/1) ... [2023-04-01 22:30:00,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:30:00,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:30:00,617 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/Problem12_label39.c[2950,2963] [2023-04-01 22:30:01,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:30:01,304 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:30:01,327 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/Problem12_label39.c[2950,2963] [2023-04-01 22:30:01,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:30:01,691 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:30:01,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:30:01 WrapperNode [2023-04-01 22:30:01,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:30:01,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:30:01,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:30:01,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:30:01,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:30:01" (1/1) ... [2023-04-01 22:30:01,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:30:01" (1/1) ... [2023-04-01 22:30:01,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:30:01" (1/1) ... [2023-04-01 22:30:01,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:30:01" (1/1) ... [2023-04-01 22:30:01,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:30:01" (1/1) ... [2023-04-01 22:30:01,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:30:01" (1/1) ... [2023-04-01 22:30:01,928 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:30:01" (1/1) ... [2023-04-01 22:30:01,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:30:01" (1/1) ... [2023-04-01 22:30:01,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:30:01,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:30:01,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:30:01,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:30:01,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:30:01" (1/1) ... [2023-04-01 22:30:01,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:30:01,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:01,994 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 22:30:02,017 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 22:30:02,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:30:02,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:30:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:30:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:30:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:30:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:30:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:30:02,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:30:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:30:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:30:02,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:30:02,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:30:02,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:30:02,160 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:30:02,161 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:30:05,766 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:30:05,779 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:30:05,779 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:30:05,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:30:05 BoogieIcfgContainer [2023-04-01 22:30:05,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:30:05,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:30:05,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:30:05,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:30:05,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:30:00" (1/3) ... [2023-04-01 22:30:05,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603ac101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:30:05, skipping insertion in model container [2023-04-01 22:30:05,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:30:01" (2/3) ... [2023-04-01 22:30:05,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603ac101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:30:05, skipping insertion in model container [2023-04-01 22:30:05,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:30:05" (3/3) ... [2023-04-01 22:30:05,789 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label39.c [2023-04-01 22:30:05,803 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:30:05,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:30:05,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:30:05,877 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;@5bbf1768, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:30:05,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:30:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 22:30:05,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-01 22:30:05,892 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:05,893 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] [2023-04-01 22:30:05,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:05,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2100397736, now seen corresponding path program 1 times [2023-04-01 22:30:05,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:05,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747861761] [2023-04-01 22:30:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:05,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:06,362 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 22:30:06,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:06,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747861761] [2023-04-01 22:30:06,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747861761] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:30:06,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:30:06,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:30:06,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273249410] [2023-04-01 22:30:06,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:06,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:30:06,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:06,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:30:06,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:30:06,400 INFO L87 Difference]: Start difference. First operand has 839 states, 825 states have (on average 1.907878787878788) internal successors, (1574), 826 states have internal predecessors, (1574), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 22:30:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:13,489 INFO L93 Difference]: Finished difference Result 3253 states and 6294 transitions. [2023-04-01 22:30:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:30:13,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 27 [2023-04-01 22:30:13,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:13,517 INFO L225 Difference]: With dead ends: 3253 [2023-04-01 22:30:13,517 INFO L226 Difference]: Without dead ends: 2346 [2023-04-01 22:30:13,528 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 22:30:13,535 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4041 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 4910 mSolverCounterSat, 1386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4041 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 6296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1386 IncrementalHoareTripleChecker+Valid, 4910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:13,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4041 Valid, 65 Invalid, 6296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1386 Valid, 4910 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-01 22:30:13,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2023-04-01 22:30:13,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2331. [2023-04-01 22:30:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 2295 states have (on average 1.6226579520697169) internal successors, (3724), 2297 states have internal predecessors, (3724), 14 states have call successors, (14), 14 states have call predecessors, (14), 21 states have return successors, (49), 19 states have call predecessors, (49), 13 states have call successors, (49) [2023-04-01 22:30:13,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3787 transitions. [2023-04-01 22:30:13,691 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3787 transitions. Word has length 27 [2023-04-01 22:30:13,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:13,691 INFO L495 AbstractCegarLoop]: Abstraction has 2331 states and 3787 transitions. [2023-04-01 22:30:13,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 22:30:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3787 transitions. [2023-04-01 22:30:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-01 22:30:13,695 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:13,696 INFO L195 NwaCegarLoop]: trace histogram [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 22:30:13,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:30:13,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:13,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -742277905, now seen corresponding path program 1 times [2023-04-01 22:30:13,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:13,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144378765] [2023-04-01 22:30:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:13,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:13,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:14,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 22:30:14,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:14,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144378765] [2023-04-01 22:30:14,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144378765] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:14,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263098044] [2023-04-01 22:30:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:14,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:14,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:14,219 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 22:30:14,223 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 22:30:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:14,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:14,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:30:14,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:30:14,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263098044] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:30:14,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:30:14,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-04-01 22:30:14,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379995921] [2023-04-01 22:30:14,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:14,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:30:14,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:14,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:30:14,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:30:14,415 INFO L87 Difference]: Start difference. First operand 2331 states and 3787 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:30:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:17,703 INFO L93 Difference]: Finished difference Result 6979 states and 11460 transitions. [2023-04-01 22:30:17,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:30:17,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2023-04-01 22:30:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:17,728 INFO L225 Difference]: With dead ends: 6979 [2023-04-01 22:30:17,728 INFO L226 Difference]: Without dead ends: 4654 [2023-04-01 22:30:17,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:30:17,734 INFO L413 NwaCegarLoop]: 1185 mSDtfsCounter, 759 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:17,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1217 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 22:30:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2023-04-01 22:30:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 4654. [2023-04-01 22:30:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4654 states, 4586 states have (on average 1.5248582642825992) internal successors, (6993), 4590 states have internal predecessors, (6993), 26 states have call successors, (26), 26 states have call predecessors, (26), 41 states have return successors, (165), 37 states have call predecessors, (165), 25 states have call successors, (165) [2023-04-01 22:30:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 7184 transitions. [2023-04-01 22:30:17,857 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 7184 transitions. Word has length 102 [2023-04-01 22:30:17,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:17,859 INFO L495 AbstractCegarLoop]: Abstraction has 4654 states and 7184 transitions. [2023-04-01 22:30:17,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:30:17,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 7184 transitions. [2023-04-01 22:30:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-01 22:30:17,867 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:17,867 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 22:30:17,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 22:30:18,073 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 22:30:18,073 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:18,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1379938615, now seen corresponding path program 1 times [2023-04-01 22:30:18,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:18,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575738105] [2023-04-01 22:30:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:18,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:18,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:18,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:30:18,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575738105] [2023-04-01 22:30:18,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575738105] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:30:18,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:30:18,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:30:18,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28560143] [2023-04-01 22:30:18,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:18,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:30:18,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:18,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:30:18,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:30:18,438 INFO L87 Difference]: Start difference. First operand 4654 states and 7184 transitions. Second operand has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:30:23,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:23,803 INFO L93 Difference]: Finished difference Result 14200 states and 22515 transitions. [2023-04-01 22:30:23,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:30:23,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 106 [2023-04-01 22:30:23,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:23,848 INFO L225 Difference]: With dead ends: 14200 [2023-04-01 22:30:23,848 INFO L226 Difference]: Without dead ends: 9552 [2023-04-01 22:30:23,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:30:23,862 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3140 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5703 mSolverCounterSat, 938 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3140 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 6641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 5703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:23,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3140 Valid, 118 Invalid, 6641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [938 Valid, 5703 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 22:30:23,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9552 states. [2023-04-01 22:30:24,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9552 to 9439. [2023-04-01 22:30:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9439 states, 9254 states have (on average 1.3996109790360924) internal successors, (12952), 9282 states have internal predecessors, (12952), 50 states have call successors, (50), 50 states have call predecessors, (50), 134 states have return successors, (679), 106 states have call predecessors, (679), 49 states have call successors, (679) [2023-04-01 22:30:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9439 states to 9439 states and 13681 transitions. [2023-04-01 22:30:24,125 INFO L78 Accepts]: Start accepts. Automaton has 9439 states and 13681 transitions. Word has length 106 [2023-04-01 22:30:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:24,127 INFO L495 AbstractCegarLoop]: Abstraction has 9439 states and 13681 transitions. [2023-04-01 22:30:24,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:30:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 9439 states and 13681 transitions. [2023-04-01 22:30:24,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-04-01 22:30:24,129 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:24,129 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 22:30:24,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 22:30:24,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:24,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:24,130 INFO L85 PathProgramCache]: Analyzing trace with hash -340762180, now seen corresponding path program 1 times [2023-04-01 22:30:24,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:24,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157078750] [2023-04-01 22:30:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:24,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:24,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:30:24,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:24,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157078750] [2023-04-01 22:30:24,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157078750] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:30:24,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:30:24,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:30:24,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359884026] [2023-04-01 22:30:24,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:24,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:30:24,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:24,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:30:24,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:30:24,442 INFO L87 Difference]: Start difference. First operand 9439 states and 13681 transitions. Second operand has 7 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:30:29,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:29,771 INFO L93 Difference]: Finished difference Result 29044 states and 44533 transitions. [2023-04-01 22:30:29,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 22:30:29,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 117 [2023-04-01 22:30:29,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:29,846 INFO L225 Difference]: With dead ends: 29044 [2023-04-01 22:30:29,846 INFO L226 Difference]: Without dead ends: 19611 [2023-04-01 22:30:29,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:30:29,872 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 3863 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 5100 mSolverCounterSat, 1148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3863 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 6248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1148 IncrementalHoareTripleChecker+Valid, 5100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:29,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3863 Valid, 125 Invalid, 6248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1148 Valid, 5100 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 22:30:29,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19611 states. [2023-04-01 22:30:30,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19611 to 19395. [2023-04-01 22:30:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19395 states, 18827 states have (on average 1.2678068731077707) internal successors, (23869), 18964 states have internal predecessors, (23869), 98 states have call successors, (98), 98 states have call predecessors, (98), 469 states have return successors, (2813), 332 states have call predecessors, (2813), 97 states have call successors, (2813) [2023-04-01 22:30:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19395 states to 19395 states and 26780 transitions. [2023-04-01 22:30:30,478 INFO L78 Accepts]: Start accepts. Automaton has 19395 states and 26780 transitions. Word has length 117 [2023-04-01 22:30:30,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:30,479 INFO L495 AbstractCegarLoop]: Abstraction has 19395 states and 26780 transitions. [2023-04-01 22:30:30,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:30:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand 19395 states and 26780 transitions. [2023-04-01 22:30:30,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-01 22:30:30,481 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:30,482 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 22:30:30,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:30:30,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:30,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1366681189, now seen corresponding path program 1 times [2023-04-01 22:30:30,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:30,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652069119] [2023-04-01 22:30:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:30,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:30,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:30,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:30:30,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:30,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652069119] [2023-04-01 22:30:30,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652069119] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:30:30,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:30:30,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:30:30,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381988001] [2023-04-01 22:30:30,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:30,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:30:30,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:30,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:30:30,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:30:30,857 INFO L87 Difference]: Start difference. First operand 19395 states and 26780 transitions. Second operand has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:30:38,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:38,566 INFO L93 Difference]: Finished difference Result 72141 states and 106498 transitions. [2023-04-01 22:30:38,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:30:38,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 140 [2023-04-01 22:30:38,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:38,863 INFO L225 Difference]: With dead ends: 72141 [2023-04-01 22:30:38,863 INFO L226 Difference]: Without dead ends: 52752 [2023-04-01 22:30:38,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:30:38,918 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 5128 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 7534 mSolverCounterSat, 1863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5128 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 9397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1863 IncrementalHoareTripleChecker+Valid, 7534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:38,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5128 Valid, 160 Invalid, 9397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1863 Valid, 7534 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-04-01 22:30:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52752 states. [2023-04-01 22:30:39,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52752 to 48858. [2023-04-01 22:30:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48858 states, 47576 states have (on average 1.20997982175887) internal successors, (57566), 47883 states have internal predecessors, (57566), 246 states have call successors, (246), 246 states have call predecessors, (246), 1035 states have return successors, (9526), 728 states have call predecessors, (9526), 245 states have call successors, (9526) [2023-04-01 22:30:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48858 states to 48858 states and 67338 transitions. [2023-04-01 22:30:40,167 INFO L78 Accepts]: Start accepts. Automaton has 48858 states and 67338 transitions. Word has length 140 [2023-04-01 22:30:40,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:40,168 INFO L495 AbstractCegarLoop]: Abstraction has 48858 states and 67338 transitions. [2023-04-01 22:30:40,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 22:30:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand 48858 states and 67338 transitions. [2023-04-01 22:30:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-04-01 22:30:40,170 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:40,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:30:40,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 22:30:40,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:40,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:40,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1241169136, now seen corresponding path program 1 times [2023-04-01 22:30:40,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:40,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552215685] [2023-04-01 22:30:40,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:40,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:40,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:40,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:30:40,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:40,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552215685] [2023-04-01 22:30:40,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552215685] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:40,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826103934] [2023-04-01 22:30:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:40,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:40,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:40,430 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 22:30:40,433 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 22:30:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:40,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:40,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:30:40,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:30:40,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826103934] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:30:40,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:30:40,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:30:40,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185484430] [2023-04-01 22:30:40,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:40,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:30:40,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:40,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:30:40,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:30:40,594 INFO L87 Difference]: Start difference. First operand 48858 states and 67338 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:30:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:43,729 INFO L93 Difference]: Finished difference Result 114743 states and 159502 transitions. [2023-04-01 22:30:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:30:43,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2023-04-01 22:30:43,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:44,120 INFO L225 Difference]: With dead ends: 114743 [2023-04-01 22:30:44,120 INFO L226 Difference]: Without dead ends: 65891 [2023-04-01 22:30:44,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 179 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 22:30:44,186 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 798 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:44,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1291 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 22:30:44,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65891 states. [2023-04-01 22:30:45,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65891 to 61275. [2023-04-01 22:30:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61275 states, 59809 states have (on average 1.1330903375746124) internal successors, (67769), 60139 states have internal predecessors, (67769), 310 states have call successors, (310), 310 states have call predecessors, (310), 1155 states have return successors, (8392), 825 states have call predecessors, (8392), 309 states have call successors, (8392) [2023-04-01 22:30:45,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61275 states to 61275 states and 76471 transitions. [2023-04-01 22:30:45,491 INFO L78 Accepts]: Start accepts. Automaton has 61275 states and 76471 transitions. Word has length 175 [2023-04-01 22:30:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:45,491 INFO L495 AbstractCegarLoop]: Abstraction has 61275 states and 76471 transitions. [2023-04-01 22:30:45,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 22:30:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 61275 states and 76471 transitions. [2023-04-01 22:30:45,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-04-01 22:30:45,495 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:45,495 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-04-01 22:30:45,506 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 22:30:45,706 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,SelfDestructingSolverStorable5 [2023-04-01 22:30:45,707 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:45,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:45,707 INFO L85 PathProgramCache]: Analyzing trace with hash -687696593, now seen corresponding path program 1 times [2023-04-01 22:30:45,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:45,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058114218] [2023-04-01 22:30:45,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:45,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:46,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:46,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:46,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:30:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:30:46,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:46,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058114218] [2023-04-01 22:30:46,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058114218] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:46,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249561248] [2023-04-01 22:30:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:46,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:46,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:46,461 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 22:30:46,464 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 22:30:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:46,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:46,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:30:46,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:30:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:30:47,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249561248] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:30:47,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:30:47,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:30:47,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163991429] [2023-04-01 22:30:47,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:30:47,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:30:47,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:47,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:30:47,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:30:47,064 INFO L87 Difference]: Start difference. First operand 61275 states and 76471 transitions. Second operand has 12 states, 12 states have (on average 36.25) internal successors, (435), 10 states have internal predecessors, (435), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:30:56,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:30:56,041 INFO L93 Difference]: Finished difference Result 154745 states and 199556 transitions. [2023-04-01 22:30:56,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 22:30:56,042 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 36.25) internal successors, (435), 10 states have internal predecessors, (435), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 262 [2023-04-01 22:30:56,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:30:56,326 INFO L225 Difference]: With dead ends: 154745 [2023-04-01 22:30:56,326 INFO L226 Difference]: Without dead ends: 93476 [2023-04-01 22:30:56,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 526 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2023-04-01 22:30:56,393 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 5366 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 11505 mSolverCounterSat, 1726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5366 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 13231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1726 IncrementalHoareTripleChecker+Valid, 11505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:30:56,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5366 Valid, 211 Invalid, 13231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1726 Valid, 11505 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-04-01 22:30:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93476 states. [2023-04-01 22:30:58,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93476 to 89439. [2023-04-01 22:30:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89439 states, 87173 states have (on average 1.1216661122136442) internal successors, (97779), 87744 states have internal predecessors, (97779), 450 states have call successors, (450), 450 states have call predecessors, (450), 1815 states have return successors, (14074), 1244 states have call predecessors, (14074), 449 states have call successors, (14074) [2023-04-01 22:30:58,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89439 states to 89439 states and 112303 transitions. [2023-04-01 22:30:58,843 INFO L78 Accepts]: Start accepts. Automaton has 89439 states and 112303 transitions. Word has length 262 [2023-04-01 22:30:58,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:30:58,844 INFO L495 AbstractCegarLoop]: Abstraction has 89439 states and 112303 transitions. [2023-04-01 22:30:58,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.25) internal successors, (435), 10 states have internal predecessors, (435), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:30:58,844 INFO L276 IsEmpty]: Start isEmpty. Operand 89439 states and 112303 transitions. [2023-04-01 22:30:58,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-04-01 22:30:58,850 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:30:58,850 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:30:58,858 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 22:30:59,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:59,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:30:59,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:30:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1737397709, now seen corresponding path program 1 times [2023-04-01 22:30:59,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:30:59,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572245058] [2023-04-01 22:30:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:59,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:30:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:30:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:59,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:30:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:59,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:30:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-04-01 22:30:59,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:30:59,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572245058] [2023-04-01 22:30:59,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572245058] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:30:59,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986866729] [2023-04-01 22:30:59,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:30:59,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:30:59,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:30:59,790 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 22:30:59,793 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 22:30:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:30:59,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:30:59,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:30:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-04-01 22:30:59,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:30:59,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986866729] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:30:59,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:30:59,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 22:30:59,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628605879] [2023-04-01 22:30:59,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:30:59,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:30:59,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:30:59,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:30:59,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:30:59,970 INFO L87 Difference]: Start difference. First operand 89439 states and 112303 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 22:31:03,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:31:03,563 INFO L93 Difference]: Finished difference Result 178872 states and 224940 transitions. [2023-04-01 22:31:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:31:03,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 312 [2023-04-01 22:31:03,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:31:03,828 INFO L225 Difference]: With dead ends: 178872 [2023-04-01 22:31:03,828 INFO L226 Difference]: Without dead ends: 89439 [2023-04-01 22:31:04,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:31:04,013 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 819 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 2793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:31:04,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1087 Invalid, 2793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:31:04,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89439 states. [2023-04-01 22:31:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89439 to 89429. [2023-04-01 22:31:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89429 states, 87167 states have (on average 1.1032730276366056) internal successors, (96169), 87736 states have internal predecessors, (96169), 450 states have call successors, (450), 450 states have call predecessors, (450), 1811 states have return successors, (12495), 1242 states have call predecessors, (12495), 449 states have call successors, (12495) [2023-04-01 22:31:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89429 states to 89429 states and 109114 transitions. [2023-04-01 22:31:05,863 INFO L78 Accepts]: Start accepts. Automaton has 89429 states and 109114 transitions. Word has length 312 [2023-04-01 22:31:05,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:31:05,864 INFO L495 AbstractCegarLoop]: Abstraction has 89429 states and 109114 transitions. [2023-04-01 22:31:05,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 22:31:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 89429 states and 109114 transitions. [2023-04-01 22:31:05,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-04-01 22:31:05,878 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:31:05,878 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:31:05,888 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 22:31:06,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:06,089 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:31:06,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:31:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1873718940, now seen corresponding path program 1 times [2023-04-01 22:31:06,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:31:06,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288409064] [2023-04-01 22:31:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:06,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:31:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:31:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:06,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:31:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:06,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:31:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:31:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:06,679 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:31:06,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:31:06,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288409064] [2023-04-01 22:31:06,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288409064] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:31:06,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621207593] [2023-04-01 22:31:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:06,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:06,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:31:06,685 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 22:31:06,688 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 22:31:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:06,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:31:06,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:31:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:31:07,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:31:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:31:07,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621207593] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:31:07,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:31:07,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:31:07,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95870746] [2023-04-01 22:31:07,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:31:07,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:31:07,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:31:07,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:31:07,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:31:07,584 INFO L87 Difference]: Start difference. First operand 89429 states and 109114 transitions. Second operand has 11 states, 11 states have (on average 55.18181818181818) internal successors, (607), 9 states have internal predecessors, (607), 4 states have call successors, (9), 6 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 22:31:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:31:17,705 INFO L93 Difference]: Finished difference Result 214502 states and 269844 transitions. [2023-04-01 22:31:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:31:17,706 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 55.18181818181818) internal successors, (607), 9 states have internal predecessors, (607), 4 states have call successors, (9), 6 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 395 [2023-04-01 22:31:17,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:31:18,355 INFO L225 Difference]: With dead ends: 214502 [2023-04-01 22:31:18,355 INFO L226 Difference]: Without dead ends: 121143 [2023-04-01 22:31:18,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 801 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:31:18,463 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 5488 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 14257 mSolverCounterSat, 1854 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5494 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 16111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1854 IncrementalHoareTripleChecker+Valid, 14257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:31:18,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5494 Valid, 256 Invalid, 16111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1854 Valid, 14257 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-04-01 22:31:18,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121143 states. [2023-04-01 22:31:20,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121143 to 120896. [2023-04-01 22:31:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120896 states, 117774 states have (on average 1.0678927437295158) internal successors, (125770), 118542 states have internal predecessors, (125770), 715 states have call successors, (715), 606 states have call predecessors, (715), 2406 states have return successors, (16813), 1747 states have call predecessors, (16813), 714 states have call successors, (16813) [2023-04-01 22:31:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120896 states to 120896 states and 143298 transitions. [2023-04-01 22:31:20,840 INFO L78 Accepts]: Start accepts. Automaton has 120896 states and 143298 transitions. Word has length 395 [2023-04-01 22:31:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:31:20,841 INFO L495 AbstractCegarLoop]: Abstraction has 120896 states and 143298 transitions. [2023-04-01 22:31:20,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 55.18181818181818) internal successors, (607), 9 states have internal predecessors, (607), 4 states have call successors, (9), 6 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 22:31:20,841 INFO L276 IsEmpty]: Start isEmpty. Operand 120896 states and 143298 transitions. [2023-04-01 22:31:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2023-04-01 22:31:20,879 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:31:20,879 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:20,890 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 22:31:21,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:21,086 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:31:21,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:31:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1830791148, now seen corresponding path program 1 times [2023-04-01 22:31:21,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:31:21,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500990612] [2023-04-01 22:31:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:21,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:31:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:31:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:21,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:31:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:21,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:31:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-04-01 22:31:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-04-01 22:31:21,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:31:21,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500990612] [2023-04-01 22:31:21,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500990612] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:31:21,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899794527] [2023-04-01 22:31:21,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:21,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:21,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:31:21,760 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 22:31:21,765 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 22:31:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:21,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:31:21,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:31:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2023-04-01 22:31:21,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:31:21,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899794527] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:31:21,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:31:21,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:31:21,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313522400] [2023-04-01 22:31:21,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:31:21,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:31:21,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:31:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:31:21,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:31:21,997 INFO L87 Difference]: Start difference. First operand 120896 states and 143298 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 22:31:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:31:26,309 INFO L93 Difference]: Finished difference Result 260347 states and 312623 transitions. [2023-04-01 22:31:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:31:26,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 499 [2023-04-01 22:31:26,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:31:26,853 INFO L225 Difference]: With dead ends: 260347 [2023-04-01 22:31:26,853 INFO L226 Difference]: Without dead ends: 140224 [2023-04-01 22:31:27,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 506 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:31:27,074 INFO L413 NwaCegarLoop]: 1151 mSDtfsCounter, 865 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:31:27,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1183 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 22:31:27,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140224 states. [2023-04-01 22:31:28,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140224 to 138675. [2023-04-01 22:31:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138675 states, 135325 states have (on average 1.0657823757620544) internal successors, (144227), 136107 states have internal predecessors, (144227), 827 states have call successors, (827), 698 states have call predecessors, (827), 2522 states have return successors, (18813), 1869 states have call predecessors, (18813), 826 states have call successors, (18813) [2023-04-01 22:31:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138675 states to 138675 states and 163867 transitions. [2023-04-01 22:31:29,505 INFO L78 Accepts]: Start accepts. Automaton has 138675 states and 163867 transitions. Word has length 499 [2023-04-01 22:31:29,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:31:29,506 INFO L495 AbstractCegarLoop]: Abstraction has 138675 states and 163867 transitions. [2023-04-01 22:31:29,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 22:31:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 138675 states and 163867 transitions. [2023-04-01 22:31:29,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-04-01 22:31:29,599 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:31:29,600 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:29,609 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 22:31:29,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:29,806 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:31:29,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:31:29,807 INFO L85 PathProgramCache]: Analyzing trace with hash -571724286, now seen corresponding path program 1 times [2023-04-01 22:31:29,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:31:29,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999918353] [2023-04-01 22:31:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:29,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:31:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:31:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:32,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:31:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:32,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:31:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:32,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-04-01 22:31:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:33,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:31:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:33,157 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 186 proven. 203 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-04-01 22:31:33,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:31:33,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999918353] [2023-04-01 22:31:33,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999918353] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:31:33,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983251501] [2023-04-01 22:31:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:33,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:33,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:31:33,159 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 22:31:33,162 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 22:31:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:33,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 22:31:33,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:31:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-04-01 22:31:34,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:31:34,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983251501] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:31:34,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:31:34,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-04-01 22:31:34,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618242658] [2023-04-01 22:31:34,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:31:34,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:31:34,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:31:34,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:31:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:31:34,375 INFO L87 Difference]: Start difference. First operand 138675 states and 163867 transitions. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 4 states have internal predecessors, (568), 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 22:31:39,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:31:39,421 INFO L93 Difference]: Finished difference Result 275692 states and 321561 transitions. [2023-04-01 22:31:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 22:31:39,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 4 states have internal predecessors, (568), 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 773 [2023-04-01 22:31:39,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:31:39,757 INFO L225 Difference]: With dead ends: 275692 [2023-04-01 22:31:39,757 INFO L226 Difference]: Without dead ends: 137790 [2023-04-01 22:31:40,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:31:40,068 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 2026 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4774 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 5112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 4774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:31:40,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2026 Valid, 157 Invalid, 5112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 4774 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-01 22:31:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137790 states. [2023-04-01 22:31:41,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137790 to 130025. [2023-04-01 22:31:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130025 states, 126769 states have (on average 1.065347206335934) internal successors, (135053), 127617 states have internal predecessors, (135053), 654 states have call successors, (654), 654 states have call predecessors, (654), 2601 states have return successors, (13591), 1753 states have call predecessors, (13591), 653 states have call successors, (13591) [2023-04-01 22:31:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130025 states to 130025 states and 149298 transitions. [2023-04-01 22:31:42,137 INFO L78 Accepts]: Start accepts. Automaton has 130025 states and 149298 transitions. Word has length 773 [2023-04-01 22:31:42,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:31:42,137 INFO L495 AbstractCegarLoop]: Abstraction has 130025 states and 149298 transitions. [2023-04-01 22:31:42,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 4 states have internal predecessors, (568), 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 22:31:42,138 INFO L276 IsEmpty]: Start isEmpty. Operand 130025 states and 149298 transitions. [2023-04-01 22:31:42,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2023-04-01 22:31:42,437 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:31:42,438 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:42,447 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 22:31:42,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:42,644 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:31:42,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:31:42,645 INFO L85 PathProgramCache]: Analyzing trace with hash -889037607, now seen corresponding path program 1 times [2023-04-01 22:31:42,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:31:42,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367313984] [2023-04-01 22:31:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:42,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:31:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:31:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:43,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:31:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:43,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:31:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:43,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-01 22:31:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:43,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2023-04-01 22:31:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:43,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:31:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 299 proven. 105 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-04-01 22:31:43,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:31:43,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367313984] [2023-04-01 22:31:43,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367313984] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:31:43,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086896728] [2023-04-01 22:31:43,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:43,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:31:43,634 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 22:31:43,670 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 22:31:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:43,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:31:43,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:31:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 644 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-04-01 22:31:44,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:31:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 301 proven. 106 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-04-01 22:31:44,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086896728] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:31:44,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:31:44,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 9 [2023-04-01 22:31:44,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772629651] [2023-04-01 22:31:44,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:31:44,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 22:31:44,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:31:44,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 22:31:44,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-01 22:31:44,465 INFO L87 Difference]: Start difference. First operand 130025 states and 149298 transitions. Second operand has 9 states, 9 states have (on average 127.66666666666667) internal successors, (1149), 7 states have internal predecessors, (1149), 3 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 22:31:52,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:31:52,500 INFO L93 Difference]: Finished difference Result 308507 states and 360961 transitions. [2023-04-01 22:31:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 22:31:52,501 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 127.66666666666667) internal successors, (1149), 7 states have internal predecessors, (1149), 3 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 820 [2023-04-01 22:31:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:31:53,177 INFO L225 Difference]: With dead ends: 308507 [2023-04-01 22:31:53,177 INFO L226 Difference]: Without dead ends: 179255 [2023-04-01 22:31:53,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1668 GetRequests, 1651 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:31:53,298 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 3295 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 8603 mSolverCounterSat, 1227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3296 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 9830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1227 IncrementalHoareTripleChecker+Valid, 8603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:31:53,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3296 Valid, 135 Invalid, 9830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1227 Valid, 8603 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-04-01 22:31:53,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179255 states. [2023-04-01 22:31:55,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179255 to 178940. [2023-04-01 22:31:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178940 states, 174937 states have (on average 1.0573120609133573) internal successors, (184963), 175920 states have internal predecessors, (184963), 906 states have call successors, (906), 906 states have call predecessors, (906), 3096 states have return successors, (18234), 2113 states have call predecessors, (18234), 905 states have call successors, (18234) [2023-04-01 22:31:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178940 states to 178940 states and 204103 transitions. [2023-04-01 22:31:56,323 INFO L78 Accepts]: Start accepts. Automaton has 178940 states and 204103 transitions. Word has length 820 [2023-04-01 22:31:56,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:31:56,323 INFO L495 AbstractCegarLoop]: Abstraction has 178940 states and 204103 transitions. [2023-04-01 22:31:56,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 127.66666666666667) internal successors, (1149), 7 states have internal predecessors, (1149), 3 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 22:31:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 178940 states and 204103 transitions. [2023-04-01 22:31:56,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2023-04-01 22:31:56,395 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:31:56,396 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:56,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 22:31:56,601 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,SelfDestructingSolverStorable11 [2023-04-01 22:31:56,602 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:31:56,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:31:56,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1859651580, now seen corresponding path program 1 times [2023-04-01 22:31:56,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:31:56,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236789130] [2023-04-01 22:31:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:56,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:31:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:58,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:31:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:58,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:31:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:31:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:59,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-01 22:31:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:59,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2023-04-01 22:31:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:59,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:31:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:59,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:31:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:31:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 92 proven. 468 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-04-01 22:31:59,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:31:59,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236789130] [2023-04-01 22:31:59,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236789130] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:31:59,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424522871] [2023-04-01 22:31:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:31:59,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:31:59,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:31:59,820 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 22:31:59,844 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 22:32:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:00,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:32:00,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:32:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 598 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-04-01 22:32:00,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:32:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 284 proven. 120 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-04-01 22:32:00,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424522871] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:32:00,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:32:00,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2023-04-01 22:32:00,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417861544] [2023-04-01 22:32:00,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:32:00,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 22:32:00,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:00,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 22:32:00,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-04-01 22:32:00,720 INFO L87 Difference]: Start difference. First operand 178940 states and 204103 transitions. Second operand has 19 states, 19 states have (on average 82.52631578947368) internal successors, (1568), 17 states have internal predecessors, (1568), 5 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-01 22:32:22,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:32:22,726 INFO L93 Difference]: Finished difference Result 421314 states and 482834 transitions. [2023-04-01 22:32:22,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-04-01 22:32:22,727 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 82.52631578947368) internal successors, (1568), 17 states have internal predecessors, (1568), 5 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 927 [2023-04-01 22:32:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:32:23,400 INFO L225 Difference]: With dead ends: 421314 [2023-04-01 22:32:23,400 INFO L226 Difference]: Without dead ends: 241146 [2023-04-01 22:32:23,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2006 GetRequests, 1918 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1374, Invalid=6458, Unknown=0, NotChecked=0, Total=7832 [2023-04-01 22:32:23,658 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 16953 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 24838 mSolverCounterSat, 4710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16960 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 29548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4710 IncrementalHoareTripleChecker+Valid, 24838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:32:23,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16960 Valid, 756 Invalid, 29548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4710 Valid, 24838 Invalid, 0 Unknown, 0 Unchecked, 16.6s Time] [2023-04-01 22:32:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241146 states. [2023-04-01 22:32:27,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241146 to 236693. [2023-04-01 22:32:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236693 states, 231996 states have (on average 1.0406989775685789) internal successors, (241438), 233033 states have internal predecessors, (241438), 1206 states have call successors, (1206), 1206 states have call predecessors, (1206), 3490 states have return successors, (18758), 2453 states have call predecessors, (18758), 1205 states have call successors, (18758) [2023-04-01 22:32:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236693 states to 236693 states and 261402 transitions. [2023-04-01 22:32:27,987 INFO L78 Accepts]: Start accepts. Automaton has 236693 states and 261402 transitions. Word has length 927 [2023-04-01 22:32:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:32:28,001 INFO L495 AbstractCegarLoop]: Abstraction has 236693 states and 261402 transitions. [2023-04-01 22:32:28,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 82.52631578947368) internal successors, (1568), 17 states have internal predecessors, (1568), 5 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-01 22:32:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 236693 states and 261402 transitions. [2023-04-01 22:32:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2023-04-01 22:32:28,093 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:32:28,094 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:28,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 22:32:28,301 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,SelfDestructingSolverStorable12 [2023-04-01 22:32:28,301 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:32:28,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:32:28,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1638976074, now seen corresponding path program 1 times [2023-04-01 22:32:28,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:32:28,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198981749] [2023-04-01 22:32:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:28,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:32:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:29,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:32:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:32:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:29,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:32:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:29,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 22:32:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:29,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2023-04-01 22:32:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:29,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2023-04-01 22:32:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:29,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:32:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 192 proven. 240 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-04-01 22:32:29,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:32:29,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198981749] [2023-04-01 22:32:29,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198981749] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:32:29,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353479183] [2023-04-01 22:32:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:32:29,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:32:29,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:32:29,465 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 22:32:29,470 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 22:32:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:32:29,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 1357 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 22:32:29,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:32:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 979 proven. 6 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-04-01 22:32:35,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:32:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 505 proven. 354 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-04-01 22:32:39,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353479183] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:32:39,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:32:39,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2023-04-01 22:32:39,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229019156] [2023-04-01 22:32:39,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:32:39,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 22:32:39,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:32:39,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 22:32:39,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-04-01 22:32:39,701 INFO L87 Difference]: Start difference. First operand 236693 states and 261402 transitions. Second operand has 17 states, 17 states have (on average 82.76470588235294) internal successors, (1407), 15 states have internal predecessors, (1407), 7 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-04-01 22:32:47,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:33:01,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:33:12,387 WARN L539 Checker$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 22:33:15,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:33:18,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-04-01 22:33:27,742 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]