/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_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:23:57,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:23:57,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:23:57,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:23:57,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:23:57,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:23:57,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:23:57,526 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 22:23:57,538 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:23:57,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:23:57,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:23:57,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:23:57,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:23:57,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:23:57,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:23:57,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:23:57,540 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:23:57,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:23:57,540 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:23:57,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:23:57,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:23:57,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:23:57,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:23:57,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:23:57,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:23:57,540 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:23:57,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:23:57,541 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:23:57,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:23:57,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:23:57,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:23:57,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:23:57,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:23:57,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:23:57,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:23:57,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:23:57,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:23:57,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:23:57,541 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:23:57,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:23:57,542 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:23:57,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:23:57,542 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:23:57,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:23:57,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:23:57,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:23:57,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:23:57,766 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:23:57,766 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:23:57,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label13.c [2023-04-01 22:23:58,698 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:23:59,023 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:23:59,023 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label13.c [2023-04-01 22:23:59,036 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fdc27a57/706ec27c362c46498abab5a30c93a658/FLAG72e0933d6 [2023-04-01 22:23:59,313 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fdc27a57/706ec27c362c46498abab5a30c93a658 [2023-04-01 22:23:59,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:23:59,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:23:59,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:23:59,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:23:59,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:23:59,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:23:59" (1/1) ... [2023-04-01 22:23:59,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f381f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:59, skipping insertion in model container [2023-04-01 22:23:59,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:23:59" (1/1) ... [2023-04-01 22:23:59,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:23:59,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:23:59,578 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_label13.c[3765,3778] [2023-04-01 22:24:00,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:24:00,122 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:24:00,142 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_label13.c[3765,3778] [2023-04-01 22:24:00,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:24:00,429 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:24:00,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:00 WrapperNode [2023-04-01 22:24:00,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:24:00,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:24:00,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:24:00,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:24:00,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:00" (1/1) ... [2023-04-01 22:24:00,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:00" (1/1) ... [2023-04-01 22:24:00,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:00" (1/1) ... [2023-04-01 22:24:00,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:00" (1/1) ... [2023-04-01 22:24:00,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:00" (1/1) ... [2023-04-01 22:24:00,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:00" (1/1) ... [2023-04-01 22:24:00,552 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:00" (1/1) ... [2023-04-01 22:24:00,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:00" (1/1) ... [2023-04-01 22:24:00,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:24:00,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:24:00,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:24:00,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:24:00,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:00" (1/1) ... [2023-04-01 22:24:00,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:24:00,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:00,597 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 22:24:00,615 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 22:24:00,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:24:00,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:24:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:24:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:24:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:24:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:24:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:24:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:24:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:24:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:24:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:24:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:24:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:24:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:24:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:24:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:24:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:24:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:24:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:24:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:24:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:24:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:24:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:24:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:24:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:24:00,694 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:24:00,695 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:24:03,379 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:24:03,387 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:24:03,387 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:24:03,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:24:03 BoogieIcfgContainer [2023-04-01 22:24:03,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:24:03,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:24:03,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:24:03,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:24:03,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:23:59" (1/3) ... [2023-04-01 22:24:03,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772f785e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:24:03, skipping insertion in model container [2023-04-01 22:24:03,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:24:00" (2/3) ... [2023-04-01 22:24:03,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772f785e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:24:03, skipping insertion in model container [2023-04-01 22:24:03,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:24:03" (3/3) ... [2023-04-01 22:24:03,393 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label13.c [2023-04-01 22:24:03,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:24:03,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:24:03,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:24:03,475 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;@67e716cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:24:03,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:24:03,479 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 22:24:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-01 22:24:03,484 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:03,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:24:03,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:03,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:03,487 INFO L85 PathProgramCache]: Analyzing trace with hash 177126709, now seen corresponding path program 1 times [2023-04-01 22:24:03,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:03,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544647681] [2023-04-01 22:24:03,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:03,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:03,785 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 22:24:03,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544647681] [2023-04-01 22:24:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544647681] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:03,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:24:03,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:24:03,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224432904] [2023-04-01 22:24:03,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:03,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:24:03,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:24:03,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:24:03,809 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 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 22:24:08,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:08,336 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-04-01 22:24:08,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:24:08,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 34 [2023-04-01 22:24:08,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:08,351 INFO L225 Difference]: With dead ends: 2471 [2023-04-01 22:24:08,351 INFO L226 Difference]: Without dead ends: 1568 [2023-04-01 22:24:08,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:24:08,358 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3422 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3319 mSolverCounterSat, 1446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3422 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 4765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1446 IncrementalHoareTripleChecker+Valid, 3319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:08,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3422 Valid, 42 Invalid, 4765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1446 Valid, 3319 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-01 22:24:08,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-04-01 22:24:08,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-04-01 22:24:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1529 states have (on average 1.8325703073904513) internal successors, (2802), 1530 states have internal predecessors, (2802), 10 states have call successors, (10), 10 states have call predecessors, (10), 13 states have return successors, (21), 12 states have call predecessors, (21), 9 states have call successors, (21) [2023-04-01 22:24:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2023-04-01 22:24:08,442 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 34 [2023-04-01 22:24:08,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:08,442 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2023-04-01 22:24:08,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 22:24:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2023-04-01 22:24:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-01 22:24:08,448 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:08,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-04-01 22:24:08,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:24:08,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:08,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:08,450 INFO L85 PathProgramCache]: Analyzing trace with hash -377892365, now seen corresponding path program 1 times [2023-04-01 22:24:08,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:08,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618504316] [2023-04-01 22:24:08,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:08,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:24:08,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:08,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618504316] [2023-04-01 22:24:08,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618504316] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:08,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:24:08,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:24:08,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875288760] [2023-04-01 22:24:08,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:08,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:24:08,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:24:08,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:24:08,801 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 22:24:14,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:14,560 INFO L93 Difference]: Finished difference Result 6326 states and 11703 transitions. [2023-04-01 22:24:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:24:14,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 107 [2023-04-01 22:24:14,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:14,577 INFO L225 Difference]: With dead ends: 6326 [2023-04-01 22:24:14,578 INFO L226 Difference]: Without dead ends: 4779 [2023-04-01 22:24:14,584 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 22:24:14,587 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 6407 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 7569 mSolverCounterSat, 1357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6407 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 8926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1357 IncrementalHoareTripleChecker+Valid, 7569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:14,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6407 Valid, 187 Invalid, 8926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1357 Valid, 7569 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-04-01 22:24:14,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2023-04-01 22:24:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4740. [2023-04-01 22:24:14,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 4640 states have (on average 1.5732758620689655) internal successors, (7300), 4654 states have internal predecessors, (7300), 26 states have call successors, (26), 26 states have call predecessors, (26), 73 states have return successors, (255), 59 states have call predecessors, (255), 25 states have call successors, (255) [2023-04-01 22:24:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 7581 transitions. [2023-04-01 22:24:14,711 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 7581 transitions. Word has length 107 [2023-04-01 22:24:14,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:14,712 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 7581 transitions. [2023-04-01 22:24:14,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 22:24:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 7581 transitions. [2023-04-01 22:24:14,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-01 22:24:14,719 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:14,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-04-01 22:24:14,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:24:14,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:14,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2077907185, now seen corresponding path program 1 times [2023-04-01 22:24:14,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:14,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486909981] [2023-04-01 22:24:14,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:14,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:14,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:14,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:24:14,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:14,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486909981] [2023-04-01 22:24:14,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486909981] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:24:14,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699222739] [2023-04-01 22:24:14,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:14,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:14,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:14,926 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 22:24:14,927 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 22:24:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:14,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:24:15,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:24:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:24:15,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:24:15,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699222739] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:15,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:24:15,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:24:15,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926378594] [2023-04-01 22:24:15,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:15,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:24:15,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:15,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:24:15,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:24:15,075 INFO L87 Difference]: Start difference. First operand 4740 states and 7581 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 22:24:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:17,691 INFO L93 Difference]: Finished difference Result 14177 states and 23276 transitions. [2023-04-01 22:24:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:24:17,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 109 [2023-04-01 22:24:17,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:17,721 INFO L225 Difference]: With dead ends: 14177 [2023-04-01 22:24:17,721 INFO L226 Difference]: Without dead ends: 9443 [2023-04-01 22:24:17,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 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 22:24:17,729 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 752 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:17,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 1194 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:24:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9443 states. [2023-04-01 22:24:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9443 to 9443. [2023-04-01 22:24:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9443 states, 9257 states have (on average 1.483093874905477) internal successors, (13729), 9284 states have internal predecessors, (13729), 50 states have call successors, (50), 50 states have call predecessors, (50), 135 states have return successors, (851), 108 states have call predecessors, (851), 49 states have call successors, (851) [2023-04-01 22:24:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9443 states to 9443 states and 14630 transitions. [2023-04-01 22:24:17,889 INFO L78 Accepts]: Start accepts. Automaton has 9443 states and 14630 transitions. Word has length 109 [2023-04-01 22:24:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:17,889 INFO L495 AbstractCegarLoop]: Abstraction has 9443 states and 14630 transitions. [2023-04-01 22:24:17,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 22:24:17,890 INFO L276 IsEmpty]: Start isEmpty. Operand 9443 states and 14630 transitions. [2023-04-01 22:24:17,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-04-01 22:24:17,894 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:17,894 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-04-01 22:24:17,909 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 22:24:18,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:18,099 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:18,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:18,099 INFO L85 PathProgramCache]: Analyzing trace with hash 497698971, now seen corresponding path program 1 times [2023-04-01 22:24:18,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:18,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172340526] [2023-04-01 22:24:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:18,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:18,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:18,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:24:18,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:18,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172340526] [2023-04-01 22:24:18,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172340526] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:18,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:24:18,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 22:24:18,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719943621] [2023-04-01 22:24:18,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:18,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 22:24:18,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 22:24:18,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 22:24:18,402 INFO L87 Difference]: Start difference. First operand 9443 states and 14630 transitions. Second operand has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 22:24:23,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:23,350 INFO L93 Difference]: Finished difference Result 28090 states and 46034 transitions. [2023-04-01 22:24:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 22:24:23,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 119 [2023-04-01 22:24:23,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:23,410 INFO L225 Difference]: With dead ends: 28090 [2023-04-01 22:24:23,411 INFO L226 Difference]: Without dead ends: 18653 [2023-04-01 22:24:23,425 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 22:24:23,430 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3136 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5710 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3136 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 6645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 5710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:23,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3136 Valid, 118 Invalid, 6645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 5710 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-01 22:24:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2023-04-01 22:24:23,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 16910. [2023-04-01 22:24:23,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16910 states, 16438 states have (on average 1.3981019588757757) internal successors, (22982), 16543 states have internal predecessors, (22982), 86 states have call successors, (86), 86 states have call predecessors, (86), 385 states have return successors, (2603), 280 states have call predecessors, (2603), 85 states have call successors, (2603) [2023-04-01 22:24:23,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16910 states to 16910 states and 25671 transitions. [2023-04-01 22:24:23,769 INFO L78 Accepts]: Start accepts. Automaton has 16910 states and 25671 transitions. Word has length 119 [2023-04-01 22:24:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:23,770 INFO L495 AbstractCegarLoop]: Abstraction has 16910 states and 25671 transitions. [2023-04-01 22:24:23,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 22:24:23,771 INFO L276 IsEmpty]: Start isEmpty. Operand 16910 states and 25671 transitions. [2023-04-01 22:24:23,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-01 22:24:23,773 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:23,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-04-01 22:24:23,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:24:23,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:23,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:23,774 INFO L85 PathProgramCache]: Analyzing trace with hash 369518627, now seen corresponding path program 1 times [2023-04-01 22:24:23,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:23,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43450172] [2023-04-01 22:24:23,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:23,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:23,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:23,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:24:24,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:24,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43450172] [2023-04-01 22:24:24,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43450172] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:24,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:24:24,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:24:24,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406059198] [2023-04-01 22:24:24,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:24,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:24:24,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:24,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:24:24,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:24:24,009 INFO L87 Difference]: Start difference. First operand 16910 states and 25671 transitions. Second operand has 8 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 22:24:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:30,755 INFO L93 Difference]: Finished difference Result 53123 states and 83327 transitions. [2023-04-01 22:24:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:24:30,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 147 [2023-04-01 22:24:30,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:30,841 INFO L225 Difference]: With dead ends: 53123 [2023-04-01 22:24:30,841 INFO L226 Difference]: Without dead ends: 36219 [2023-04-01 22:24:30,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-04-01 22:24:30,876 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 5151 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 6958 mSolverCounterSat, 2448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5151 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 9406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2448 IncrementalHoareTripleChecker+Valid, 6958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:30,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5151 Valid, 160 Invalid, 9406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2448 Valid, 6958 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-04-01 22:24:30,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36219 states. [2023-04-01 22:24:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36219 to 31503. [2023-04-01 22:24:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31503 states, 30587 states have (on average 1.2478503939582175) internal successors, (38168), 30805 states have internal predecessors, (38168), 158 states have call successors, (158), 158 states have call predecessors, (158), 757 states have return successors, (5576), 539 states have call predecessors, (5576), 157 states have call successors, (5576) [2023-04-01 22:24:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31503 states to 31503 states and 43902 transitions. [2023-04-01 22:24:31,493 INFO L78 Accepts]: Start accepts. Automaton has 31503 states and 43902 transitions. Word has length 147 [2023-04-01 22:24:31,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:31,494 INFO L495 AbstractCegarLoop]: Abstraction has 31503 states and 43902 transitions. [2023-04-01 22:24:31,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 22:24:31,494 INFO L276 IsEmpty]: Start isEmpty. Operand 31503 states and 43902 transitions. [2023-04-01 22:24:31,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-04-01 22:24:31,497 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:31,497 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:31,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 22:24:31,497 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:31,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:31,498 INFO L85 PathProgramCache]: Analyzing trace with hash -554271659, now seen corresponding path program 1 times [2023-04-01 22:24:31,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:31,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443489418] [2023-04-01 22:24:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:31,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:31,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:31,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:31,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-01 22:24:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 54 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:24:31,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:31,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443489418] [2023-04-01 22:24:31,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443489418] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:24:31,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327790728] [2023-04-01 22:24:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:31,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:31,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:31,791 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 22:24:31,792 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 22:24:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:31,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:24:31,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:24:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-01 22:24:32,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:24:32,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327790728] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:32,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:24:32,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-04-01 22:24:32,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202544374] [2023-04-01 22:24:32,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:32,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:24:32,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:32,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:24:32,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:24:32,051 INFO L87 Difference]: Start difference. First operand 31503 states and 43902 transitions. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:24:36,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:36,597 INFO L93 Difference]: Finished difference Result 90429 states and 131023 transitions. [2023-04-01 22:24:36,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:24:36,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 228 [2023-04-01 22:24:36,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:36,828 INFO L225 Difference]: With dead ends: 90429 [2023-04-01 22:24:36,828 INFO L226 Difference]: Without dead ends: 58932 [2023-04-01 22:24:36,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:24:36,992 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 2234 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 5113 mSolverCounterSat, 1000 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2234 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 6113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1000 IncrementalHoareTripleChecker+Valid, 5113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:36,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2234 Valid, 138 Invalid, 6113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1000 Valid, 5113 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-01 22:24:37,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58932 states. [2023-04-01 22:24:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58932 to 58695. [2023-04-01 22:24:37,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58695 states, 57069 states have (on average 1.1724228565420807) internal successors, (66909), 57487 states have internal predecessors, (66909), 294 states have call successors, (294), 294 states have call predecessors, (294), 1331 states have return successors, (11424), 913 states have call predecessors, (11424), 293 states have call successors, (11424) [2023-04-01 22:24:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58695 states to 58695 states and 78627 transitions. [2023-04-01 22:24:38,263 INFO L78 Accepts]: Start accepts. Automaton has 58695 states and 78627 transitions. Word has length 228 [2023-04-01 22:24:38,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:38,264 INFO L495 AbstractCegarLoop]: Abstraction has 58695 states and 78627 transitions. [2023-04-01 22:24:38,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 22:24:38,264 INFO L276 IsEmpty]: Start isEmpty. Operand 58695 states and 78627 transitions. [2023-04-01 22:24:38,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-04-01 22:24:38,266 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:38,266 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:38,273 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 22:24:38,467 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 22:24:38,467 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:38,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:38,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1347764708, now seen corresponding path program 1 times [2023-04-01 22:24:38,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:38,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653475780] [2023-04-01 22:24:38,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:38,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:38,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:24:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:24:38,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:38,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653475780] [2023-04-01 22:24:38,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653475780] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:24:38,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878789362] [2023-04-01 22:24:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:38,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:38,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:38,937 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 22:24:38,937 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 22:24:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:39,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:24:39,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:24:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:24:39,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:24:39,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878789362] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:39,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:24:39,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:24:39,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509404181] [2023-04-01 22:24:39,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:39,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:24:39,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:39,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:24:39,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:24:39,066 INFO L87 Difference]: Start difference. First operand 58695 states and 78627 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 22:24:42,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:42,383 INFO L93 Difference]: Finished difference Result 143819 states and 197475 transitions. [2023-04-01 22:24:42,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:24:42,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 255 [2023-04-01 22:24:42,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:42,695 INFO L225 Difference]: With dead ends: 143819 [2023-04-01 22:24:42,695 INFO L226 Difference]: Without dead ends: 85130 [2023-04-01 22:24:42,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 261 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 22:24:42,745 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 797 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 972 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 972 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:42,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 162 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [972 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 22:24:42,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85130 states. [2023-04-01 22:24:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85130 to 78183. [2023-04-01 22:24:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78183 states, 76229 states have (on average 1.1872515709244513) internal successors, (90503), 76718 states have internal predecessors, (90503), 394 states have call successors, (394), 394 states have call predecessors, (394), 1559 states have return successors, (18377), 1070 states have call predecessors, (18377), 393 states have call successors, (18377) [2023-04-01 22:24:44,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78183 states to 78183 states and 109274 transitions. [2023-04-01 22:24:44,214 INFO L78 Accepts]: Start accepts. Automaton has 78183 states and 109274 transitions. Word has length 255 [2023-04-01 22:24:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:44,214 INFO L495 AbstractCegarLoop]: Abstraction has 78183 states and 109274 transitions. [2023-04-01 22:24:44,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 22:24:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 78183 states and 109274 transitions. [2023-04-01 22:24:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-04-01 22:24:44,474 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:44,474 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 3, 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] [2023-04-01 22:24:44,496 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 22:24:44,674 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 22:24:44,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:44,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:44,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1231985132, now seen corresponding path program 1 times [2023-04-01 22:24:44,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:44,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106566561] [2023-04-01 22:24:44,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:44,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:44,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:45,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:45,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:24:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:45,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:24:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-04-01 22:24:45,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:45,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106566561] [2023-04-01 22:24:45,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106566561] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:24:45,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704499728] [2023-04-01 22:24:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:45,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:45,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:45,085 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 22:24:45,159 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 22:24:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:45,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:24:45,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:24:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-04-01 22:24:45,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:24:45,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704499728] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:45,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:24:45,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:24:45,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117094774] [2023-04-01 22:24:45,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:45,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:24:45,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:45,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:24:45,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:24:45,321 INFO L87 Difference]: Start difference. First operand 78183 states and 109274 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 22:24:49,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:49,099 INFO L93 Difference]: Finished difference Result 175622 states and 250147 transitions. [2023-04-01 22:24:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:24:49,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 340 [2023-04-01 22:24:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:49,541 INFO L225 Difference]: With dead ends: 175622 [2023-04-01 22:24:49,541 INFO L226 Difference]: Without dead ends: 97445 [2023-04-01 22:24:49,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:24:49,608 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 847 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:49,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1206 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 2295 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 22:24:49,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97445 states. [2023-04-01 22:24:51,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97445 to 91297. [2023-04-01 22:24:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91297 states, 89177 states have (on average 1.177781266470054) internal successors, (105031), 89681 states have internal predecessors, (105031), 462 states have call successors, (462), 462 states have call predecessors, (462), 1657 states have return successors, (20928), 1153 states have call predecessors, (20928), 461 states have call successors, (20928) [2023-04-01 22:24:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91297 states to 91297 states and 126421 transitions. [2023-04-01 22:24:51,612 INFO L78 Accepts]: Start accepts. Automaton has 91297 states and 126421 transitions. Word has length 340 [2023-04-01 22:24:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:51,612 INFO L495 AbstractCegarLoop]: Abstraction has 91297 states and 126421 transitions. [2023-04-01 22:24:51,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 22:24:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 91297 states and 126421 transitions. [2023-04-01 22:24:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-04-01 22:24:51,632 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:51,632 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:24:51,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-01 22:24:51,836 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 22:24:51,837 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:51,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:51,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1092769808, now seen corresponding path program 1 times [2023-04-01 22:24:51,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:51,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840029943] [2023-04-01 22:24:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:51,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:52,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:52,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:24:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:52,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:24:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:52,422 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:24:52,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:52,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840029943] [2023-04-01 22:24:52,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840029943] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:24:52,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185418144] [2023-04-01 22:24:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:52,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:52,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:52,433 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 22:24:52,433 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 22:24:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:52,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:24:52,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:24:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 303 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:24:52,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:24:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 303 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:24:53,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185418144] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:24:53,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:24:53,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:24:53,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105527300] [2023-04-01 22:24:53,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:24:53,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:24:53,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:24:53,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:24:53,415 INFO L87 Difference]: Start difference. First operand 91297 states and 126421 transitions. Second operand has 11 states, 11 states have (on average 74.36363636363636) internal successors, (818), 9 states have internal predecessors, (818), 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 22:25:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:03,787 INFO L93 Difference]: Finished difference Result 215459 states and 311032 transitions. [2023-04-01 22:25:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:25:03,788 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 74.36363636363636) internal successors, (818), 9 states have internal predecessors, (818), 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 470 [2023-04-01 22:25:03,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:04,321 INFO L225 Difference]: With dead ends: 215459 [2023-04-01 22:25:04,321 INFO L226 Difference]: Without dead ends: 121802 [2023-04-01 22:25:04,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 951 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 22:25:04,431 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 4590 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 15245 mSolverCounterSat, 1802 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4595 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 17047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1802 IncrementalHoareTripleChecker+Valid, 15245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:04,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4595 Valid, 256 Invalid, 17047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1802 Valid, 15245 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-04-01 22:25:04,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121802 states. [2023-04-01 22:25:06,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121802 to 112173. [2023-04-01 22:25:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112173 states, 109541 states have (on average 1.1170338046941328) internal successors, (122361), 110127 states have internal predecessors, (122361), 670 states have call successors, (670), 566 states have call predecessors, (670), 1961 states have return successors, (23860), 1479 states have call predecessors, (23860), 669 states have call successors, (23860) [2023-04-01 22:25:06,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112173 states to 112173 states and 146891 transitions. [2023-04-01 22:25:06,993 INFO L78 Accepts]: Start accepts. Automaton has 112173 states and 146891 transitions. Word has length 470 [2023-04-01 22:25:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:06,993 INFO L495 AbstractCegarLoop]: Abstraction has 112173 states and 146891 transitions. [2023-04-01 22:25:06,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 74.36363636363636) internal successors, (818), 9 states have internal predecessors, (818), 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 22:25:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 112173 states and 146891 transitions. [2023-04-01 22:25:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-04-01 22:25:07,089 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:07,090 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:07,097 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 22:25:07,295 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 22:25:07,295 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:07,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:07,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1488320410, now seen corresponding path program 1 times [2023-04-01 22:25:07,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:07,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950142141] [2023-04-01 22:25:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:07,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:07,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:07,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:25:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:07,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-04-01 22:25:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:08,047 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 184 proven. 101 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-04-01 22:25:08,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:08,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950142141] [2023-04-01 22:25:08,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950142141] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:08,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698945870] [2023-04-01 22:25:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:08,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:08,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:08,049 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 22:25:08,051 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 22:25:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:08,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:25:08,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-01 22:25:08,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:25:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 185 proven. 102 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-04-01 22:25:08,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698945870] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:25:08,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:25:08,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:25:08,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121128023] [2023-04-01 22:25:08,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:25:08,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:25:08,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:25:08,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:25:08,664 INFO L87 Difference]: Start difference. First operand 112173 states and 146891 transitions. Second operand has 11 states, 11 states have (on average 76.18181818181819) internal successors, (838), 9 states have internal predecessors, (838), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:25:16,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:16,334 INFO L93 Difference]: Finished difference Result 249338 states and 329210 transitions. [2023-04-01 22:25:16,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:25:16,335 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 76.18181818181819) internal successors, (838), 9 states have internal predecessors, (838), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 552 [2023-04-01 22:25:16,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:16,739 INFO L225 Difference]: With dead ends: 249338 [2023-04-01 22:25:16,739 INFO L226 Difference]: Without dead ends: 137175 [2023-04-01 22:25:16,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1132 GetRequests, 1113 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-04-01 22:25:17,001 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 6560 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 7893 mSolverCounterSat, 2037 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6560 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 9930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2037 IncrementalHoareTripleChecker+Valid, 7893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:17,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6560 Valid, 209 Invalid, 9930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2037 Valid, 7893 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-04-01 22:25:17,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137175 states. [2023-04-01 22:25:18,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137175 to 127818. [2023-04-01 22:25:18,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127818 states, 124915 states have (on average 1.0848737141256055) internal successors, (135517), 125544 states have internal predecessors, (135517), 765 states have call successors, (765), 646 states have call predecessors, (765), 2137 states have return successors, (20627), 1627 states have call predecessors, (20627), 764 states have call successors, (20627) [2023-04-01 22:25:19,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127818 states to 127818 states and 156909 transitions. [2023-04-01 22:25:19,355 INFO L78 Accepts]: Start accepts. Automaton has 127818 states and 156909 transitions. Word has length 552 [2023-04-01 22:25:19,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:19,356 INFO L495 AbstractCegarLoop]: Abstraction has 127818 states and 156909 transitions. [2023-04-01 22:25:19,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 76.18181818181819) internal successors, (838), 9 states have internal predecessors, (838), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 22:25:19,356 INFO L276 IsEmpty]: Start isEmpty. Operand 127818 states and 156909 transitions. [2023-04-01 22:25:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2023-04-01 22:25:19,381 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:19,381 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:19,388 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 22:25:19,586 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 22:25:19,587 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:19,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:19,588 INFO L85 PathProgramCache]: Analyzing trace with hash 282429966, now seen corresponding path program 1 times [2023-04-01 22:25:19,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:19,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669108863] [2023-04-01 22:25:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:19,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:20,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:25:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:20,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-04-01 22:25:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:20,214 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 196 proven. 113 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-04-01 22:25:20,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:20,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669108863] [2023-04-01 22:25:20,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669108863] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:20,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433369144] [2023-04-01 22:25:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:20,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:20,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:20,215 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 22:25:20,245 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 22:25:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:20,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:25:20,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 427 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-01 22:25:20,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:25:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 197 proven. 114 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-04-01 22:25:20,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433369144] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:25:20,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:25:20,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 22:25:20,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554034848] [2023-04-01 22:25:20,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:25:20,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 22:25:20,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:20,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 22:25:20,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:25:20,834 INFO L87 Difference]: Start difference. First operand 127818 states and 156909 transitions. Second operand has 12 states, 12 states have (on average 72.91666666666667) internal successors, (875), 10 states have internal predecessors, (875), 4 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:25:27,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:27,935 INFO L93 Difference]: Finished difference Result 289616 states and 369679 transitions. [2023-04-01 22:25:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 22:25:27,936 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 72.91666666666667) internal successors, (875), 10 states have internal predecessors, (875), 4 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 564 [2023-04-01 22:25:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:28,504 INFO L225 Difference]: With dead ends: 289616 [2023-04-01 22:25:28,504 INFO L226 Difference]: Without dead ends: 161808 [2023-04-01 22:25:28,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1160 GetRequests, 1139 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-04-01 22:25:28,635 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 4568 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 9662 mSolverCounterSat, 1807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4568 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 11469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1807 IncrementalHoareTripleChecker+Valid, 9662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:28,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4568 Valid, 221 Invalid, 11469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1807 Valid, 9662 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-04-01 22:25:28,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161808 states. [2023-04-01 22:25:31,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161808 to 158238. [2023-04-01 22:25:31,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158238 states, 154545 states have (on average 1.0695590281147886) internal successors, (165295), 155386 states have internal predecessors, (165295), 945 states have call successors, (945), 798 states have call predecessors, (945), 2747 states have return successors, (23529), 2053 states have call predecessors, (23529), 944 states have call successors, (23529) [2023-04-01 22:25:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158238 states to 158238 states and 189769 transitions. [2023-04-01 22:25:31,631 INFO L78 Accepts]: Start accepts. Automaton has 158238 states and 189769 transitions. Word has length 564 [2023-04-01 22:25:31,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:31,632 INFO L495 AbstractCegarLoop]: Abstraction has 158238 states and 189769 transitions. [2023-04-01 22:25:31,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 72.91666666666667) internal successors, (875), 10 states have internal predecessors, (875), 4 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 22:25:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 158238 states and 189769 transitions. [2023-04-01 22:25:31,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2023-04-01 22:25:31,653 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:31,653 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 22:25:31,658 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 22:25:31,858 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 22:25:31,858 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:31,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:31,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2081288896, now seen corresponding path program 1 times [2023-04-01 22:25:31,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:31,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724910856] [2023-04-01 22:25:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:31,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:32,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:32,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:32,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:25:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:32,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-04-01 22:25:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2023-04-01 22:25:32,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:32,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724910856] [2023-04-01 22:25:32,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724910856] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:32,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999079884] [2023-04-01 22:25:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:32,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:32,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:32,713 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 22:25:32,714 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 22:25:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:32,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 22:25:32,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2023-04-01 22:25:33,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:25:33,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999079884] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:33,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:25:33,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:25:33,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629076490] [2023-04-01 22:25:33,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:33,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:25:33,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:33,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:25:33,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:25:33,027 INFO L87 Difference]: Start difference. First operand 158238 states and 189769 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 22:25:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:38,073 INFO L93 Difference]: Finished difference Result 396429 states and 483123 transitions. [2023-04-01 22:25:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:25:38,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 574 [2023-04-01 22:25:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:38,952 INFO L225 Difference]: With dead ends: 396429 [2023-04-01 22:25:38,952 INFO L226 Difference]: Without dead ends: 238195 [2023-04-01 22:25:39,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:25:39,199 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 782 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 3026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:39,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 1307 Invalid, 3026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 22:25:39,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238195 states. [2023-04-01 22:25:42,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238195 to 235101. [2023-04-01 22:25:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235101 states, 230279 states have (on average 1.0655205207596004) internal successors, (245367), 231263 states have internal predecessors, (245367), 1403 states have call successors, (1403), 1194 states have call predecessors, (1403), 3418 states have return successors, (34599), 2643 states have call predecessors, (34599), 1402 states have call successors, (34599) [2023-04-01 22:25:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235101 states to 235101 states and 281369 transitions. [2023-04-01 22:25:43,157 INFO L78 Accepts]: Start accepts. Automaton has 235101 states and 281369 transitions. Word has length 574 [2023-04-01 22:25:43,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:43,158 INFO L495 AbstractCegarLoop]: Abstraction has 235101 states and 281369 transitions. [2023-04-01 22:25:43,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 22:25:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 235101 states and 281369 transitions. [2023-04-01 22:25:43,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-04-01 22:25:43,475 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:43,475 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:43,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 22:25:43,680 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 22:25:43,680 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:43,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash 873090070, now seen corresponding path program 1 times [2023-04-01 22:25:43,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:43,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632746644] [2023-04-01 22:25:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:43,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:43,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:43,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:25:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-04-01 22:25:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:44,311 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-04-01 22:25:44,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:44,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632746644] [2023-04-01 22:25:44,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632746644] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:44,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998741917] [2023-04-01 22:25:44,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:44,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:44,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:44,329 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 22:25:44,369 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 22:25:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:44,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:25:44,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-04-01 22:25:44,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:25:44,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998741917] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:44,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:25:44,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:25:44,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132814095] [2023-04-01 22:25:44,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:44,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:25:44,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:25:44,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:25:44,762 INFO L87 Difference]: Start difference. First operand 235101 states and 281369 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 22:25:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:49,534 INFO L93 Difference]: Finished difference Result 469424 states and 562232 transitions. [2023-04-01 22:25:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:25:49,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 656 [2023-04-01 22:25:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:50,123 INFO L225 Difference]: With dead ends: 469424 [2023-04-01 22:25:50,124 INFO L226 Difference]: Without dead ends: 235096 [2023-04-01 22:25:50,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 664 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 22:25:50,427 INFO L413 NwaCegarLoop]: 1242 mSDtfsCounter, 848 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:50,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1274 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 22:25:50,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235096 states. [2023-04-01 22:25:53,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235096 to 234325. [2023-04-01 22:25:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234325 states, 229514 states have (on average 1.0556175222426518) internal successors, (242279), 230497 states have internal predecessors, (242279), 1398 states have call successors, (1398), 1190 states have call predecessors, (1398), 3412 states have return successors, (29337), 2637 states have call predecessors, (29337), 1397 states have call successors, (29337) [2023-04-01 22:25:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234325 states to 234325 states and 273014 transitions. [2023-04-01 22:25:54,011 INFO L78 Accepts]: Start accepts. Automaton has 234325 states and 273014 transitions. Word has length 656 [2023-04-01 22:25:54,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:54,011 INFO L495 AbstractCegarLoop]: Abstraction has 234325 states and 273014 transitions. [2023-04-01 22:25:54,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 22:25:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand 234325 states and 273014 transitions. [2023-04-01 22:25:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2023-04-01 22:25:54,325 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:54,325 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:54,336 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 22:25:54,530 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 22:25:54,531 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:54,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:54,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1556785722, now seen corresponding path program 1 times [2023-04-01 22:25:54,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:54,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042251889] [2023-04-01 22:25:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:54,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:55,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:25:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:55,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:25:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:56,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:25:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:56,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:25:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 300 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-04-01 22:25:56,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:56,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042251889] [2023-04-01 22:25:56,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042251889] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:56,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379193197] [2023-04-01 22:25:56,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:56,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:56,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:56,363 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 22:25:56,402 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 22:25:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:56,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 22:25:56,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-04-01 22:25:57,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:25:57,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379193197] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:25:57,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:25:57,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-04-01 22:25:57,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114229164] [2023-04-01 22:25:57,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:25:57,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:25:57,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:57,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:25:57,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-01 22:25:57,273 INFO L87 Difference]: Start difference. First operand 234325 states and 273014 transitions. Second operand has 5 states, 5 states have (on average 144.2) internal successors, (721), 4 states have internal predecessors, (721), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:26:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:03,137 INFO L93 Difference]: Finished difference Result 454197 states and 522381 transitions. [2023-04-01 22:26:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 22:26:03,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 144.2) internal successors, (721), 4 states have internal predecessors, (721), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 831 [2023-04-01 22:26:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:03,639 INFO L225 Difference]: With dead ends: 454197 [2023-04-01 22:26:03,639 INFO L226 Difference]: Without dead ends: 220645 [2023-04-01 22:26:03,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 841 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:26:03,815 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 2022 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4826 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 5163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 4826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:03,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2022 Valid, 161 Invalid, 5163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 4826 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 22:26:04,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220645 states. [2023-04-01 22:26:06,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220645 to 215193. [2023-04-01 22:26:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215193 states, 210736 states have (on average 1.0544615063396856) internal successors, (222213), 211749 states have internal predecessors, (222213), 1094 states have call successors, (1094), 1094 states have call predecessors, (1094), 3362 states have return successors, (20422), 2349 states have call predecessors, (20422), 1093 states have call successors, (20422) [2023-04-01 22:26:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215193 states to 215193 states and 243729 transitions. [2023-04-01 22:26:07,177 INFO L78 Accepts]: Start accepts. Automaton has 215193 states and 243729 transitions. Word has length 831 [2023-04-01 22:26:07,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:07,177 INFO L495 AbstractCegarLoop]: Abstraction has 215193 states and 243729 transitions. [2023-04-01 22:26:07,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.2) internal successors, (721), 4 states have internal predecessors, (721), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:26:07,177 INFO L276 IsEmpty]: Start isEmpty. Operand 215193 states and 243729 transitions. [2023-04-01 22:26:07,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2023-04-01 22:26:07,239 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:07,239 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:07,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:07,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-01 22:26:07,446 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:07,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:07,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1466764756, now seen corresponding path program 1 times [2023-04-01 22:26:07,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:07,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505970365] [2023-04-01 22:26:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:07,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:08,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:08,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:26:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:09,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-01 22:26:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:09,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2023-04-01 22:26:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:09,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:26:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:09,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:26:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 120 proven. 419 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-04-01 22:26:09,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:09,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505970365] [2023-04-01 22:26:09,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505970365] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:09,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505084312] [2023-04-01 22:26:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:09,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:09,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:09,357 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:09,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 22:26:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:09,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-01 22:26:09,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 457 proven. 39 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-04-01 22:26:10,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:26:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 120 proven. 424 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-04-01 22:26:12,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505084312] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:26:12,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:26:12,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 24 [2023-04-01 22:26:12,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369986635] [2023-04-01 22:26:12,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:26:12,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-01 22:26:12,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:12,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-01 22:26:12,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2023-04-01 22:26:12,205 INFO L87 Difference]: Start difference. First operand 215193 states and 243729 transitions. Second operand has 24 states, 24 states have (on average 70.375) internal successors, (1689), 22 states have internal predecessors, (1689), 6 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-04-01 22:26:28,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:28,792 INFO L93 Difference]: Finished difference Result 474063 states and 539443 transitions. [2023-04-01 22:26:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-04-01 22:26:28,793 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 70.375) internal successors, (1689), 22 states have internal predecessors, (1689), 6 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 906 [2023-04-01 22:26:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:29,635 INFO L225 Difference]: With dead ends: 474063 [2023-04-01 22:26:29,635 INFO L226 Difference]: Without dead ends: 256696 [2023-04-01 22:26:29,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1953 GetRequests, 1869 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1402, Invalid=5738, Unknown=0, NotChecked=0, Total=7140 [2023-04-01 22:26:29,902 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 15444 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 18387 mSolverCounterSat, 4172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15452 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 22559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4172 IncrementalHoareTripleChecker+Valid, 18387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:29,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15452 Valid, 781 Invalid, 22559 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4172 Valid, 18387 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-04-01 22:26:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256696 states. [2023-04-01 22:26:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256696 to 246081. [2023-04-01 22:26:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246081 states, 241217 states have (on average 1.0433800271125169) internal successors, (251681), 242283 states have internal predecessors, (251681), 1254 states have call successors, (1254), 1254 states have call predecessors, (1254), 3609 states have return successors, (20812), 2543 states have call predecessors, (20812), 1253 states have call successors, (20812) [2023-04-01 22:26:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246081 states to 246081 states and 273747 transitions. [2023-04-01 22:26:34,255 INFO L78 Accepts]: Start accepts. Automaton has 246081 states and 273747 transitions. Word has length 906 [2023-04-01 22:26:34,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:34,255 INFO L495 AbstractCegarLoop]: Abstraction has 246081 states and 273747 transitions. [2023-04-01 22:26:34,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 70.375) internal successors, (1689), 22 states have internal predecessors, (1689), 6 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-04-01 22:26:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 246081 states and 273747 transitions. [2023-04-01 22:26:34,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2023-04-01 22:26:34,802 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:34,821 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:26:34,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-04-01 22:26:35,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 22:26:35,026 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:35,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:35,027 INFO L85 PathProgramCache]: Analyzing trace with hash 522818861, now seen corresponding path program 1 times [2023-04-01 22:26:35,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:35,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448570748] [2023-04-01 22:26:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:35,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:35,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:35,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:26:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-01 22:26:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2023-04-01 22:26:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:35,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:26:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:35,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:26:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 234 proven. 190 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 22:26:35,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:35,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448570748] [2023-04-01 22:26:35,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448570748] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:35,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76099321] [2023-04-01 22:26:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:35,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:35,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:35,956 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:35,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 22:26:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:36,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:26:36,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 583 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-04-01 22:26:36,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:26:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 235 proven. 192 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-04-01 22:26:36,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76099321] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:26:36,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:26:36,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:26:36,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149312927] [2023-04-01 22:26:36,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:26:36,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:26:36,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:36,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:26:36,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:26:36,958 INFO L87 Difference]: Start difference. First operand 246081 states and 273747 transitions. Second operand has 11 states, 11 states have (on average 137.0) internal successors, (1507), 9 states have internal predecessors, (1507), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 22:26:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:50,382 INFO L93 Difference]: Finished difference Result 549218 states and 616686 transitions. [2023-04-01 22:26:50,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-04-01 22:26:50,382 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 137.0) internal successors, (1507), 9 states have internal predecessors, (1507), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 949 [2023-04-01 22:26:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:51,578 INFO L225 Difference]: With dead ends: 549218 [2023-04-01 22:26:51,578 INFO L226 Difference]: Without dead ends: 301528 [2023-04-01 22:26:51,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1990 GetRequests, 1942 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=1829, Unknown=0, NotChecked=0, Total=2256 [2023-04-01 22:26:51,747 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 5654 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 11917 mSolverCounterSat, 2635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5654 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 14552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2635 IncrementalHoareTripleChecker+Valid, 11917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:51,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5654 Valid, 433 Invalid, 14552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2635 Valid, 11917 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-04-01 22:26:51,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301528 states. [2023-04-01 22:26:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301528 to 291040. [2023-04-01 22:26:55,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291040 states, 284935 states have (on average 1.0374997806517277) internal successors, (295620), 286373 states have internal predecessors, (295620), 1478 states have call successors, (1478), 1478 states have call predecessors, (1478), 4626 states have return successors, (21956), 3188 states have call predecessors, (21956), 1477 states have call successors, (21956) [2023-04-01 22:26:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291040 states to 291040 states and 319054 transitions. [2023-04-01 22:26:56,544 INFO L78 Accepts]: Start accepts. Automaton has 291040 states and 319054 transitions. Word has length 949 [2023-04-01 22:26:56,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:56,544 INFO L495 AbstractCegarLoop]: Abstraction has 291040 states and 319054 transitions. [2023-04-01 22:26:56,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 137.0) internal successors, (1507), 9 states have internal predecessors, (1507), 4 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-01 22:26:56,544 INFO L276 IsEmpty]: Start isEmpty. Operand 291040 states and 319054 transitions. [2023-04-01 22:26:56,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2023-04-01 22:26:56,609 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:56,610 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:26:56,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 22:26:56,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-01 22:26:56,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:56,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1855858331, now seen corresponding path program 1 times [2023-04-01 22:26:56,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:56,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248608503] [2023-04-01 22:26:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:56,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:58,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:58,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:58,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:26:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:58,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-04-01 22:26:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:58,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2023-04-01 22:26:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:59,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:26:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:26:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 450 proven. 16 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-04-01 22:26:59,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:59,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248608503] [2023-04-01 22:26:59,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248608503] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:59,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485859242] [2023-04-01 22:26:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:59,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:59,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:59,276 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:26:59,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 22:26:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:59,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 22:26:59,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 523 proven. 77 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-04-01 22:27:00,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:27:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-04-01 22:27:01,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485859242] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:27:01,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:27:01,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 5] total 18 [2023-04-01 22:27:01,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759702669] [2023-04-01 22:27:01,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:27:01,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 22:27:01,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:01,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 22:27:01,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-04-01 22:27:01,720 INFO L87 Difference]: Start difference. First operand 291040 states and 319054 transitions. Second operand has 18 states, 18 states have (on average 109.33333333333333) internal successors, (1968), 16 states have internal predecessors, (1968), 11 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (17), 9 states have call predecessors, (17), 10 states have call successors, (17) [2023-04-01 22:27:30,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:27:30,002 INFO L93 Difference]: Finished difference Result 721026 states and 797020 transitions. [2023-04-01 22:27:30,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-04-01 22:27:30,003 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 109.33333333333333) internal successors, (1968), 16 states have internal predecessors, (1968), 11 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (17), 9 states have call predecessors, (17), 10 states have call successors, (17) Word has length 953 [2023-04-01 22:27:30,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:27:31,402 INFO L225 Difference]: With dead ends: 721026 [2023-04-01 22:27:31,402 INFO L226 Difference]: Without dead ends: 430759 [2023-04-01 22:27:31,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2098 GetRequests, 1987 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4490 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1951, Invalid=10039, Unknown=0, NotChecked=0, Total=11990 [2023-04-01 22:27:31,631 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 12102 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 38998 mSolverCounterSat, 5437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12110 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 44435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5437 IncrementalHoareTripleChecker+Valid, 38998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:27:31,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12110 Valid, 909 Invalid, 44435 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5437 Valid, 38998 Invalid, 0 Unknown, 0 Unchecked, 21.6s Time] [2023-04-01 22:27:31,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430759 states. [2023-04-01 22:27:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430759 to 401059. [2023-04-01 22:27:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401059 states, 393088 states have (on average 1.0345062683165094) internal successors, (406652), 394868 states have internal predecessors, (406652), 2042 states have call successors, (2042), 2042 states have call predecessors, (2042), 5928 states have return successors, (28298), 4148 states have call predecessors, (28298), 2041 states have call successors, (28298) [2023-04-01 22:27:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401059 states to 401059 states and 436992 transitions. [2023-04-01 22:27:39,422 INFO L78 Accepts]: Start accepts. Automaton has 401059 states and 436992 transitions. Word has length 953 [2023-04-01 22:27:39,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:27:39,423 INFO L495 AbstractCegarLoop]: Abstraction has 401059 states and 436992 transitions. [2023-04-01 22:27:39,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 109.33333333333333) internal successors, (1968), 16 states have internal predecessors, (1968), 11 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (17), 9 states have call predecessors, (17), 10 states have call successors, (17) [2023-04-01 22:27:39,423 INFO L276 IsEmpty]: Start isEmpty. Operand 401059 states and 436992 transitions. [2023-04-01 22:27:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2023-04-01 22:27:39,580 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:27:39,587 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:27:39,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-01 22:27:39,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-04-01 22:27:39,792 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:27:39,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:27:39,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1665167054, now seen corresponding path program 1 times [2023-04-01 22:27:39,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:27:39,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453911735] [2023-04-01 22:27:39,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:39,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:27:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:43,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:27:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:43,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:27:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:43,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:27:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:43,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-04-01 22:27:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:43,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2023-04-01 22:27:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2023-04-01 22:27:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:43,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:27:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:27:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 816 proven. 252 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2023-04-01 22:27:43,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:27:43,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453911735] [2023-04-01 22:27:43,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453911735] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:27:43,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256833758] [2023-04-01 22:27:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:27:43,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:27:43,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:27:43,935 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 22:27:43,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 22:27:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:27:44,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 22:27:44,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:27:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 1023 proven. 262 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-04-01 22:27:45,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:27:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 400 proven. 246 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2023-04-01 22:27:47,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256833758] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:27:47,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:27:47,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 5] total 20 [2023-04-01 22:27:47,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649094253] [2023-04-01 22:27:47,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:27:47,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-01 22:27:47,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:27:47,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-01 22:27:47,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-04-01 22:27:47,801 INFO L87 Difference]: Start difference. First operand 401059 states and 436992 transitions. Second operand has 20 states, 20 states have (on average 112.8) internal successors, (2256), 18 states have internal predecessors, (2256), 9 states have call successors, (21), 9 states have call predecessors, (21), 10 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20)