/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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 22:23:03,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 22:23:03,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 22:23:03,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 22:23:03,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 22:23:03,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 22:23:03,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 22:23:03,746 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 22:23:03,765 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 22:23:03,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 22:23:03,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 22:23:03,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 22:23:03,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 22:23:03,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 22:23:03,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 22:23:03,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 22:23:03,767 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 22:23:03,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 22:23:03,767 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 22:23:03,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 22:23:03,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 22:23:03,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 22:23:03,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 22:23:03,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 22:23:03,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 22:23:03,768 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 22:23:03,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 22:23:03,768 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 22:23:03,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 22:23:03,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 22:23:03,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 22:23:03,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 22:23:03,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:23:03,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 22:23:03,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 22:23:03,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 22:23:03,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 22:23:03,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 22:23:03,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 22:23:03,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 22:23:03,770 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 22:23:03,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 22:23:03,770 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 22:23:03,770 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 22:23:03,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 22:23:03,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 22:23:03,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 22:23:03,997 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 22:23:03,998 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 22:23:04,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label11.c [2023-04-01 22:23:05,154 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 22:23:05,586 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 22:23:05,587 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label11.c [2023-04-01 22:23:05,617 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed4ba242/6b55d501941544d1bb6aabf4bf4484c5/FLAG6aecfbf2d [2023-04-01 22:23:05,632 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ed4ba242/6b55d501941544d1bb6aabf4bf4484c5 [2023-04-01 22:23:05,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 22:23:05,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 22:23:05,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 22:23:05,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 22:23:05,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 22:23:05,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:23:05" (1/1) ... [2023-04-01 22:23:05,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60faf030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:05, skipping insertion in model container [2023-04-01 22:23:05,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 10:23:05" (1/1) ... [2023-04-01 22:23:05,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 22:23:05,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 22:23:05,988 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_label11.c[5009,5022] [2023-04-01 22:23:06,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:23:06,726 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 22:23:06,755 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_label11.c[5009,5022] [2023-04-01 22:23:07,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 22:23:07,103 INFO L208 MainTranslator]: Completed translation [2023-04-01 22:23:07,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:07 WrapperNode [2023-04-01 22:23:07,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 22:23:07,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 22:23:07,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 22:23:07,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 22:23:07,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:07" (1/1) ... [2023-04-01 22:23:07,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:07" (1/1) ... [2023-04-01 22:23:07,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:07" (1/1) ... [2023-04-01 22:23:07,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:07" (1/1) ... [2023-04-01 22:23:07,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:07" (1/1) ... [2023-04-01 22:23:07,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:07" (1/1) ... [2023-04-01 22:23:07,299 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:07" (1/1) ... [2023-04-01 22:23:07,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:07" (1/1) ... [2023-04-01 22:23:07,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 22:23:07,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 22:23:07,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 22:23:07,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 22:23:07,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:07" (1/1) ... [2023-04-01 22:23:07,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 22:23:07,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:23:07,375 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 22:23:07,394 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 22:23:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 22:23:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 22:23:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 22:23:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 22:23:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 22:23:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 22:23:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 22:23:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 22:23:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 22:23:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 22:23:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 22:23:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 22:23:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 22:23:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 22:23:07,416 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 22:23:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 22:23:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 22:23:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 22:23:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 22:23:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 22:23:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 22:23:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 22:23:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 22:23:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 22:23:07,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 22:23:07,504 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 22:23:07,506 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 22:23:11,223 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 22:23:11,243 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 22:23:11,244 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 22:23:11,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:23:11 BoogieIcfgContainer [2023-04-01 22:23:11,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 22:23:11,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 22:23:11,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 22:23:11,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 22:23:11,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 10:23:05" (1/3) ... [2023-04-01 22:23:11,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e933be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:23:11, skipping insertion in model container [2023-04-01 22:23:11,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 10:23:07" (2/3) ... [2023-04-01 22:23:11,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e933be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 10:23:11, skipping insertion in model container [2023-04-01 22:23:11,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 10:23:11" (3/3) ... [2023-04-01 22:23:11,256 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label11.c [2023-04-01 22:23:11,272 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 22:23:11,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 22:23:11,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 22:23:11,351 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;@4b4b6dae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 22:23:11,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 22:23:11,359 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 22:23:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-04-01 22:23:11,367 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:23:11,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:23:11,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:23:11,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:23:11,372 INFO L85 PathProgramCache]: Analyzing trace with hash -994859376, now seen corresponding path program 1 times [2023-04-01 22:23:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:23:11,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465204599] [2023-04-01 22:23:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:11,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:23:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:11,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:23:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:11,835 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 22:23:11,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:23:11,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465204599] [2023-04-01 22:23:11,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465204599] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:23:11,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:23:11,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 22:23:11,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709509212] [2023-04-01 22:23:11,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:23:11,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:23:11,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:23:11,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:23:11,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:23:11,886 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 10.25) internal successors, (41), 3 states have internal predecessors, (41), 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 22:23:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:23:17,167 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2023-04-01 22:23:17,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 22:23:17,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 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 45 [2023-04-01 22:23:17,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:23:17,191 INFO L225 Difference]: With dead ends: 2471 [2023-04-01 22:23:17,191 INFO L226 Difference]: Without dead ends: 1568 [2023-04-01 22:23:17,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:23:17,204 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3411 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3319 mSolverCounterSat, 1446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3411 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, 5.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:23:17,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3411 Valid, 42 Invalid, 4765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1446 Valid, 3319 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-04-01 22:23:17,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2023-04-01 22:23:17,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2023-04-01 22:23:17,318 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 22:23:17,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2023-04-01 22:23:17,330 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 45 [2023-04-01 22:23:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:23:17,331 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2023-04-01 22:23:17,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 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 22:23:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2023-04-01 22:23:17,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-04-01 22:23:17,340 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:23:17,340 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, 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] [2023-04-01 22:23:17,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 22:23:17,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:23:17,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:23:17,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1316348179, now seen corresponding path program 1 times [2023-04-01 22:23:17,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:23:17,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942794580] [2023-04-01 22:23:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:17,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:23:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:17,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:23:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:23:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:23:17,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:23:17,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942794580] [2023-04-01 22:23:17,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942794580] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:23:17,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:23:17,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:23:17,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586213432] [2023-04-01 22:23:17,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:23:17,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:23:17,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:23:17,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:23:17,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:23:17,796 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand has 8 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 22:23:24,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:23:24,881 INFO L93 Difference]: Finished difference Result 6326 states and 11703 transitions. [2023-04-01 22:23:24,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:23:24,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 118 [2023-04-01 22:23:24,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:23:24,904 INFO L225 Difference]: With dead ends: 6326 [2023-04-01 22:23:24,905 INFO L226 Difference]: Without dead ends: 4779 [2023-04-01 22:23:24,909 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 22:23:24,910 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 6407 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 7569 mSolverCounterSat, 1357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s 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, 6.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:23:24,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6407 Valid, 187 Invalid, 8926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1357 Valid, 7569 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-01 22:23:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2023-04-01 22:23:25,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4740. [2023-04-01 22:23:25,057 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 22:23:25,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 7581 transitions. [2023-04-01 22:23:25,078 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 7581 transitions. Word has length 118 [2023-04-01 22:23:25,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:23:25,079 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 7581 transitions. [2023-04-01 22:23:25,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 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 22:23:25,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 7581 transitions. [2023-04-01 22:23:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-01 22:23:25,088 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:23:25,088 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, 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] [2023-04-01 22:23:25,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 22:23:25,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:23:25,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:23:25,090 INFO L85 PathProgramCache]: Analyzing trace with hash 49579575, now seen corresponding path program 1 times [2023-04-01 22:23:25,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:23:25,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216596968] [2023-04-01 22:23:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:25,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:23:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:25,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:23:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:23:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:23:25,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:23:25,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216596968] [2023-04-01 22:23:25,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216596968] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:23:25,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120175236] [2023-04-01 22:23:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:25,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:23:25,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:23:25,335 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 22:23:25,337 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 22:23:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:25,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:23:25,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:23:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:23:25,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:23:25,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120175236] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:23:25,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:23:25,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:23:25,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228432619] [2023-04-01 22:23:25,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:23:25,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:23:25,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:23:25,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:23:25,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:23:25,546 INFO L87 Difference]: Start difference. First operand 4740 states and 7581 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 22:23:28,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:23:28,403 INFO L93 Difference]: Finished difference Result 9474 states and 15194 transitions. [2023-04-01 22:23:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:23:28,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 120 [2023-04-01 22:23:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:23:28,423 INFO L225 Difference]: With dead ends: 9474 [2023-04-01 22:23:28,424 INFO L226 Difference]: Without dead ends: 4740 [2023-04-01 22:23:28,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 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 22:23:28,434 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 836 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 22:23:28,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1269 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 22:23:28,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4740 states. [2023-04-01 22:23:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4740 to 4740. [2023-04-01 22:23:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 4640 states have (on average 1.4023706896551724) internal successors, (6507), 4654 states have internal predecessors, (6507), 26 states have call successors, (26), 26 states have call predecessors, (26), 73 states have return successors, (214), 59 states have call predecessors, (214), 25 states have call successors, (214) [2023-04-01 22:23:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 6747 transitions. [2023-04-01 22:23:28,534 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 6747 transitions. Word has length 120 [2023-04-01 22:23:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:23:28,535 INFO L495 AbstractCegarLoop]: Abstraction has 4740 states and 6747 transitions. [2023-04-01 22:23:28,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 22:23:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 6747 transitions. [2023-04-01 22:23:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-04-01 22:23:28,537 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:23:28,538 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, 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] [2023-04-01 22:23:28,548 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 22:23:28,742 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 22:23:28,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:23:28,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:23:28,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1663013748, now seen corresponding path program 1 times [2023-04-01 22:23:28,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:23:28,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177055662] [2023-04-01 22:23:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:28,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:23:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:28,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:23:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:29,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:23:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:23:29,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:23:29,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177055662] [2023-04-01 22:23:29,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177055662] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:23:29,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 22:23:29,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 22:23:29,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371846583] [2023-04-01 22:23:29,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:23:29,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 22:23:29,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:23:29,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 22:23:29,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:23:29,150 INFO L87 Difference]: Start difference. First operand 4740 states and 6747 transitions. Second operand has 8 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 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 22:23:35,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:23:35,419 INFO L93 Difference]: Finished difference Result 14516 states and 21077 transitions. [2023-04-01 22:23:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:23:35,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 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 171 [2023-04-01 22:23:35,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:23:35,456 INFO L225 Difference]: With dead ends: 14516 [2023-04-01 22:23:35,456 INFO L226 Difference]: Without dead ends: 9782 [2023-04-01 22:23:35,468 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 22:23:35,469 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6222 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 5674 mSolverCounterSat, 1823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6222 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 7497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1823 IncrementalHoareTripleChecker+Valid, 5674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:23:35,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6222 Valid, 140 Invalid, 7497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1823 Valid, 5674 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-01 22:23:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9782 states. [2023-04-01 22:23:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9782 to 9687. [2023-04-01 22:23:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9687 states, 9409 states have (on average 1.2328621532575195) internal successors, (11600), 9468 states have internal predecessors, (11600), 50 states have call successors, (50), 50 states have call predecessors, (50), 227 states have return successors, (807), 168 states have call predecessors, (807), 49 states have call successors, (807) [2023-04-01 22:23:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9687 states to 9687 states and 12457 transitions. [2023-04-01 22:23:35,727 INFO L78 Accepts]: Start accepts. Automaton has 9687 states and 12457 transitions. Word has length 171 [2023-04-01 22:23:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:23:35,729 INFO L495 AbstractCegarLoop]: Abstraction has 9687 states and 12457 transitions. [2023-04-01 22:23:35,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 23.571428571428573) internal successors, (165), 5 states have internal predecessors, (165), 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 22:23:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 9687 states and 12457 transitions. [2023-04-01 22:23:35,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-04-01 22:23:35,734 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:23:35,734 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:35,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 22:23:35,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:23:35,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:23:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash 834316232, now seen corresponding path program 1 times [2023-04-01 22:23:35,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:23:35,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028404369] [2023-04-01 22:23:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:35,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:23:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:36,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:23:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:36,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:23:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:36,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:23:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 145 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:23:36,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:23:36,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028404369] [2023-04-01 22:23:36,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028404369] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:23:36,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430314596] [2023-04-01 22:23:36,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:36,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:23:36,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:23:36,211 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 22:23:36,242 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 22:23:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:36,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:23:36,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:23:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:23:36,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:23:36,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430314596] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:23:36,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:23:36,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-04-01 22:23:36,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090228915] [2023-04-01 22:23:36,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:23:36,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:23:36,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:23:36,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:23:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-04-01 22:23:36,644 INFO L87 Difference]: Start difference. First operand 9687 states and 12457 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:23:40,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:23:40,280 INFO L93 Difference]: Finished difference Result 29147 states and 38620 transitions. [2023-04-01 22:23:40,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 22:23:40,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 239 [2023-04-01 22:23:40,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:23:40,348 INFO L225 Difference]: With dead ends: 29147 [2023-04-01 22:23:40,348 INFO L226 Difference]: Without dead ends: 19466 [2023-04-01 22:23:40,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-04-01 22:23:40,373 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 2883 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 3992 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2883 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 4908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 3992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-01 22:23:40,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2883 Valid, 97 Invalid, 4908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 3992 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-01 22:23:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19466 states. [2023-04-01 22:23:40,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19466 to 19317. [2023-04-01 22:23:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19317 states, 18782 states have (on average 1.1767649877542328) internal successors, (22102), 18898 states have internal predecessors, (22102), 98 states have call successors, (98), 98 states have call predecessors, (98), 436 states have return successors, (1763), 320 states have call predecessors, (1763), 97 states have call successors, (1763) [2023-04-01 22:23:40,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19317 states to 19317 states and 23963 transitions. [2023-04-01 22:23:40,893 INFO L78 Accepts]: Start accepts. Automaton has 19317 states and 23963 transitions. Word has length 239 [2023-04-01 22:23:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:23:40,893 INFO L495 AbstractCegarLoop]: Abstraction has 19317 states and 23963 transitions. [2023-04-01 22:23:40,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 22:23:40,894 INFO L276 IsEmpty]: Start isEmpty. Operand 19317 states and 23963 transitions. [2023-04-01 22:23:40,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-04-01 22:23:40,898 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:23:40,898 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:40,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 22:23:41,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:23:41,104 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:23:41,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:23:41,104 INFO L85 PathProgramCache]: Analyzing trace with hash 12063376, now seen corresponding path program 1 times [2023-04-01 22:23:41,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:23:41,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589670229] [2023-04-01 22:23:41,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:23:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:41,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:23:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:23:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-01 22:23:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 76 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 22:23:41,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:23:41,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589670229] [2023-04-01 22:23:41,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589670229] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:23:41,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18675468] [2023-04-01 22:23:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:41,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:23:41,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:23:41,631 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 22:23:41,633 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 22:23:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:41,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 22:23:41,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:23:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-04-01 22:23:41,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:23:41,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18675468] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:23:41,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:23:41,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2023-04-01 22:23:41,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154798276] [2023-04-01 22:23:41,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:23:41,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:23:41,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:23:41,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:23:41,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 22:23:41,950 INFO L87 Difference]: Start difference. First operand 19317 states and 23963 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 22:23:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:23:46,631 INFO L93 Difference]: Finished difference Result 57587 states and 73626 transitions. [2023-04-01 22:23:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 22:23:46,631 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 239 [2023-04-01 22:23:46,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:23:46,753 INFO L225 Difference]: With dead ends: 57587 [2023-04-01 22:23:46,753 INFO L226 Difference]: Without dead ends: 38276 [2023-04-01 22:23:46,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:23:46,800 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 2249 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4975 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2249 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 5980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 4975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:23:46,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2249 Valid, 139 Invalid, 5980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1005 Valid, 4975 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-01 22:23:46,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38276 states. [2023-04-01 22:23:47,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38276 to 34971. [2023-04-01 22:23:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34971 states, 33868 states have (on average 1.1278492972717609) internal successors, (38198), 34151 states have internal predecessors, (38198), 174 states have call successors, (174), 174 states have call predecessors, (174), 928 states have return successors, (4335), 645 states have call predecessors, (4335), 173 states have call successors, (4335) [2023-04-01 22:23:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34971 states to 34971 states and 42707 transitions. [2023-04-01 22:23:47,652 INFO L78 Accepts]: Start accepts. Automaton has 34971 states and 42707 transitions. Word has length 239 [2023-04-01 22:23:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:23:47,653 INFO L495 AbstractCegarLoop]: Abstraction has 34971 states and 42707 transitions. [2023-04-01 22:23:47,653 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 22:23:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 34971 states and 42707 transitions. [2023-04-01 22:23:47,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-04-01 22:23:47,657 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:23:47,657 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:47,667 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 22:23:47,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:23:47,864 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:23:47,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:23:47,864 INFO L85 PathProgramCache]: Analyzing trace with hash -937891637, now seen corresponding path program 1 times [2023-04-01 22:23:47,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:23:47,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323000131] [2023-04-01 22:23:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:47,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:23:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:48,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:23:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:23:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:48,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:23:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:48,155 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:23:48,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:23:48,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323000131] [2023-04-01 22:23:48,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323000131] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:23:48,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060225998] [2023-04-01 22:23:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:48,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:23:48,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:23:48,157 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 22:23:48,160 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 22:23:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:48,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:23:48,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:23:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:23:48,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:23:48,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060225998] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:23:48,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:23:48,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 22:23:48,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741144167] [2023-04-01 22:23:48,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:23:48,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:23:48,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:23:48,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:23:48,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 22:23:48,544 INFO L87 Difference]: Start difference. First operand 34971 states and 42707 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 22:23:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:23:51,770 INFO L93 Difference]: Finished difference Result 98052 states and 123218 transitions. [2023-04-01 22:23:51,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:23:51,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 266 [2023-04-01 22:23:51,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:23:51,983 INFO L225 Difference]: With dead ends: 98052 [2023-04-01 22:23:51,983 INFO L226 Difference]: Without dead ends: 63087 [2023-04-01 22:23:52,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 272 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 22:23:52,037 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 770 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 661 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 22:23:52,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 201 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [661 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 22:23:52,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63087 states. [2023-04-01 22:23:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63087 to 56878. [2023-04-01 22:23:53,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56878 states, 55381 states have (on average 1.1380798468788935) internal successors, (63028), 55743 states have internal predecessors, (63028), 286 states have call successors, (286), 286 states have call predecessors, (286), 1210 states have return successors, (9068), 848 states have call predecessors, (9068), 285 states have call successors, (9068) [2023-04-01 22:23:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56878 states to 56878 states and 72382 transitions. [2023-04-01 22:23:53,702 INFO L78 Accepts]: Start accepts. Automaton has 56878 states and 72382 transitions. Word has length 266 [2023-04-01 22:23:53,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:23:53,702 INFO L495 AbstractCegarLoop]: Abstraction has 56878 states and 72382 transitions. [2023-04-01 22:23:53,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 22:23:53,703 INFO L276 IsEmpty]: Start isEmpty. Operand 56878 states and 72382 transitions. [2023-04-01 22:23:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-04-01 22:23:53,711 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:23:53,711 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 22:23:53,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 22:23:53,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:23:53,926 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:23:53,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:23:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1674549433, now seen corresponding path program 1 times [2023-04-01 22:23:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:23:53,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099763950] [2023-04-01 22:23:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:53,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:23:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:54,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:23:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:54,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:23:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:54,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:23:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:54,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:23:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 22:23:54,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:23:54,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099763950] [2023-04-01 22:23:54,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099763950] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:23:54,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010531734] [2023-04-01 22:23:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:23:54,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:23:54,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:23:54,448 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 22:23:54,451 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 22:23:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:23:54,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:23:54,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:23:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:23:54,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:23:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 22:23:55,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010531734] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:23:55,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:23:55,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:23:55,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146217708] [2023-04-01 22:23:55,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:23:55,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:23:55,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:23:55,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:23:55,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:23:55,091 INFO L87 Difference]: Start difference. First operand 56878 states and 72382 transitions. Second operand has 11 states, 11 states have (on average 42.36363636363637) internal successors, (466), 9 states have internal predecessors, (466), 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 22:24:05,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:05,239 INFO L93 Difference]: Finished difference Result 132540 states and 173592 transitions. [2023-04-01 22:24:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 22:24:05,239 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 42.36363636363637) internal successors, (466), 9 states have internal predecessors, (466), 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 360 [2023-04-01 22:24:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:05,475 INFO L225 Difference]: With dead ends: 132540 [2023-04-01 22:24:05,476 INFO L226 Difference]: Without dead ends: 72543 [2023-04-01 22:24:05,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 731 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 22:24:05,545 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 4779 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 16326 mSolverCounterSat, 1809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4783 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 18135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1809 IncrementalHoareTripleChecker+Valid, 16326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:05,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4783 Valid, 260 Invalid, 18135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1809 Valid, 16326 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-04-01 22:24:05,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72543 states. [2023-04-01 22:24:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72543 to 66886. [2023-04-01 22:24:07,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66886 states, 65017 states have (on average 1.1107556485226942) internal successors, (72218), 65465 states have internal predecessors, (72218), 396 states have call successors, (396), 334 states have call predecessors, (396), 1472 states have return successors, (11482), 1086 states have call predecessors, (11482), 395 states have call successors, (11482) [2023-04-01 22:24:07,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66886 states to 66886 states and 84096 transitions. [2023-04-01 22:24:07,571 INFO L78 Accepts]: Start accepts. Automaton has 66886 states and 84096 transitions. Word has length 360 [2023-04-01 22:24:07,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:07,571 INFO L495 AbstractCegarLoop]: Abstraction has 66886 states and 84096 transitions. [2023-04-01 22:24:07,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 42.36363636363637) internal successors, (466), 9 states have internal predecessors, (466), 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 22:24:07,572 INFO L276 IsEmpty]: Start isEmpty. Operand 66886 states and 84096 transitions. [2023-04-01 22:24:07,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-04-01 22:24:07,601 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:07,601 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:07,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 22:24:07,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:07,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:07,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:07,808 INFO L85 PathProgramCache]: Analyzing trace with hash -219007984, now seen corresponding path program 1 times [2023-04-01 22:24:07,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:07,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395871327] [2023-04-01 22:24:07,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:07,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:08,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:08,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:08,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:24:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 22:24:08,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395871327] [2023-04-01 22:24:08,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395871327] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:24:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040841784] [2023-04-01 22:24:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:08,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:08,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:08,546 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 22:24:08,549 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 22:24:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:08,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:24:08,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:24:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:24:09,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:24:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 22:24:09,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040841784] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:24:09,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:24:09,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 22:24:09,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105557009] [2023-04-01 22:24:09,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:24:09,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 22:24:09,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:09,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 22:24:09,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:24:09,655 INFO L87 Difference]: Start difference. First operand 66886 states and 84096 transitions. Second operand has 11 states, 11 states have (on average 72.0909090909091) internal successors, (793), 9 states have internal predecessors, (793), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:24:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:16,807 INFO L93 Difference]: Finished difference Result 151964 states and 192794 transitions. [2023-04-01 22:24:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 22:24:16,808 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 72.0909090909091) internal successors, (793), 9 states have internal predecessors, (793), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 397 [2023-04-01 22:24:16,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:17,042 INFO L225 Difference]: With dead ends: 151964 [2023-04-01 22:24:17,042 INFO L226 Difference]: Without dead ends: 85088 [2023-04-01 22:24:17,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 797 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-04-01 22:24:17,144 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 6304 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 7847 mSolverCounterSat, 2592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6304 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 10439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2592 IncrementalHoareTripleChecker+Valid, 7847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:17,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6304 Valid, 213 Invalid, 10439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2592 Valid, 7847 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-04-01 22:24:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85088 states. [2023-04-01 22:24:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85088 to 81749. [2023-04-01 22:24:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81749 states, 79620 states have (on average 1.0786109017834715) internal successors, (85879), 80116 states have internal predecessors, (85879), 486 states have call successors, (486), 410 states have call predecessors, (486), 1642 states have return successors, (10495), 1222 states have call predecessors, (10495), 485 states have call successors, (10495) [2023-04-01 22:24:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81749 states to 81749 states and 96860 transitions. [2023-04-01 22:24:19,199 INFO L78 Accepts]: Start accepts. Automaton has 81749 states and 96860 transitions. Word has length 397 [2023-04-01 22:24:19,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:19,199 INFO L495 AbstractCegarLoop]: Abstraction has 81749 states and 96860 transitions. [2023-04-01 22:24:19,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 72.0909090909091) internal successors, (793), 9 states have internal predecessors, (793), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 22:24:19,200 INFO L276 IsEmpty]: Start isEmpty. Operand 81749 states and 96860 transitions. [2023-04-01 22:24:19,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-04-01 22:24:19,214 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:19,215 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:24:19,219 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 22:24:19,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:19,420 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:19,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:19,538 INFO L85 PathProgramCache]: Analyzing trace with hash 475522264, now seen corresponding path program 1 times [2023-04-01 22:24:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:19,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998120889] [2023-04-01 22:24:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:19,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:19,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:24:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:19,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-04-01 22:24:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 117 proven. 3 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 22:24:20,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998120889] [2023-04-01 22:24:20,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998120889] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:24:20,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969500834] [2023-04-01 22:24:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:20,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:20,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:20,137 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 22:24:20,139 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 22:24:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:20,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 22:24:20,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:24:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-04-01 22:24:20,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:24:20,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969500834] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:24:20,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:24:20,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2023-04-01 22:24:20,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224776123] [2023-04-01 22:24:20,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:24:20,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 22:24:20,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:20,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 22:24:20,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:24:20,350 INFO L87 Difference]: Start difference. First operand 81749 states and 96860 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 22:24:23,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:23,763 INFO L93 Difference]: Finished difference Result 180475 states and 215290 transitions. [2023-04-01 22:24:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 22:24:23,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 419 [2023-04-01 22:24:23,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:24,015 INFO L225 Difference]: With dead ends: 180475 [2023-04-01 22:24:24,015 INFO L226 Difference]: Without dead ends: 98736 [2023-04-01 22:24:24,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 426 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 22:24:24,187 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 848 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:24,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1182 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-01 22:24:24,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98736 states. [2023-04-01 22:24:26,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98736 to 94826. [2023-04-01 22:24:26,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94826 states, 92554 states have (on average 1.0739460207014284) internal successors, (99398), 93047 states have internal predecessors, (99398), 568 states have call successors, (568), 478 states have call predecessors, (568), 1703 states have return successors, (11734), 1300 states have call predecessors, (11734), 567 states have call successors, (11734) [2023-04-01 22:24:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94826 states to 94826 states and 111700 transitions. [2023-04-01 22:24:26,313 INFO L78 Accepts]: Start accepts. Automaton has 94826 states and 111700 transitions. Word has length 419 [2023-04-01 22:24:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:26,313 INFO L495 AbstractCegarLoop]: Abstraction has 94826 states and 111700 transitions. [2023-04-01 22:24:26,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 22:24:26,314 INFO L276 IsEmpty]: Start isEmpty. Operand 94826 states and 111700 transitions. [2023-04-01 22:24:26,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2023-04-01 22:24:26,707 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:26,707 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:26,714 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 22:24:26,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:26,914 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:26,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:26,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1384097619, now seen corresponding path program 1 times [2023-04-01 22:24:26,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:26,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427213906] [2023-04-01 22:24:26,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:26,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:28,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:28,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:28,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-04-01 22:24:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:28,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-04-01 22:24:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:28,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2023-04-01 22:24:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:29,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:24:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:24:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 494 proven. 4 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-04-01 22:24:30,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427213906] [2023-04-01 22:24:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427213906] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:24:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478513539] [2023-04-01 22:24:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:30,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:30,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:30,145 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 22:24:30,171 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 22:24:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:30,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:24:30,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:24:31,299 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 496 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-04-01 22:24:31,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:24:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 496 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-04-01 22:24:33,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478513539] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:24:33,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:24:33,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2023-04-01 22:24:33,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514094530] [2023-04-01 22:24:33,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:24:33,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 22:24:33,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:33,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 22:24:33,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-04-01 22:24:33,410 INFO L87 Difference]: Start difference. First operand 94826 states and 111700 transitions. Second operand has 10 states, 10 states have (on average 223.5) internal successors, (2235), 8 states have internal predecessors, (2235), 7 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 22:24:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:24:44,134 INFO L93 Difference]: Finished difference Result 259953 states and 315286 transitions. [2023-04-01 22:24:44,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 22:24:44,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 223.5) internal successors, (2235), 8 states have internal predecessors, (2235), 7 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 1076 [2023-04-01 22:24:44,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:24:44,923 INFO L225 Difference]: With dead ends: 259953 [2023-04-01 22:24:44,924 INFO L226 Difference]: Without dead ends: 165137 [2023-04-01 22:24:45,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2196 GetRequests, 2171 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2023-04-01 22:24:45,227 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 4436 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 13188 mSolverCounterSat, 1656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 14844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1656 IncrementalHoareTripleChecker+Valid, 13188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-04-01 22:24:45,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4440 Valid, 279 Invalid, 14844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1656 Valid, 13188 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-04-01 22:24:45,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165137 states. [2023-04-01 22:24:47,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165137 to 149563. [2023-04-01 22:24:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149563 states, 146344 states have (on average 1.065141037555349) internal successors, (155877), 147004 states have internal predecessors, (155877), 901 states have call successors, (901), 758 states have call predecessors, (901), 2317 states have return successors, (19819), 1800 states have call predecessors, (19819), 900 states have call successors, (19819) [2023-04-01 22:24:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149563 states to 149563 states and 176597 transitions. [2023-04-01 22:24:48,002 INFO L78 Accepts]: Start accepts. Automaton has 149563 states and 176597 transitions. Word has length 1076 [2023-04-01 22:24:48,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:24:48,003 INFO L495 AbstractCegarLoop]: Abstraction has 149563 states and 176597 transitions. [2023-04-01 22:24:48,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 223.5) internal successors, (2235), 8 states have internal predecessors, (2235), 7 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2023-04-01 22:24:48,004 INFO L276 IsEmpty]: Start isEmpty. Operand 149563 states and 176597 transitions. [2023-04-01 22:24:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1281 [2023-04-01 22:24:48,353 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:24:48,354 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:24:48,361 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 22:24:48,561 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,SelfDestructingSolverStorable10 [2023-04-01 22:24:48,561 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:24:48,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:24:48,562 INFO L85 PathProgramCache]: Analyzing trace with hash 83815571, now seen corresponding path program 1 times [2023-04-01 22:24:48,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:24:48,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388398081] [2023-04-01 22:24:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:48,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:24:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:24:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:24:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:50,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-01 22:24:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:51,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-04-01 22:24:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:51,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2023-04-01 22:24:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:51,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2023-04-01 22:24:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:24:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:51,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:24:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 206 proven. 699 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2023-04-01 22:24:51,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:24:51,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388398081] [2023-04-01 22:24:51,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388398081] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:24:51,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040610663] [2023-04-01 22:24:51,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:24:51,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:24:51,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:24:51,790 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 22:24:51,809 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 22:24:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:24:52,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-01 22:24:52,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:24:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 768 proven. 39 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2023-04-01 22:24:53,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:24:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 206 proven. 706 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2023-04-01 22:24:55,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040610663] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:24:55,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:24:55,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 24 [2023-04-01 22:24:55,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5992625] [2023-04-01 22:24:55,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:24:55,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-01 22:24:55,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:24:55,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-01 22:24:55,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2023-04-01 22:24:55,493 INFO L87 Difference]: Start difference. First operand 149563 states and 176597 transitions. Second operand has 24 states, 24 states have (on average 80.04166666666667) internal successors, (1921), 22 states have internal predecessors, (1921), 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 22:25:12,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:12,612 INFO L93 Difference]: Finished difference Result 332101 states and 395082 transitions. [2023-04-01 22:25:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-04-01 22:25:12,613 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 80.04166666666667) internal successors, (1921), 22 states have internal predecessors, (1921), 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 1280 [2023-04-01 22:25:12,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:13,095 INFO L225 Difference]: With dead ends: 332101 [2023-04-01 22:25:13,095 INFO L226 Difference]: Without dead ends: 179688 [2023-04-01 22:25:13,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2703 GetRequests, 2619 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2231 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1402, Invalid=5738, Unknown=0, NotChecked=0, Total=7140 [2023-04-01 22:25:13,368 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 20201 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 16661 mSolverCounterSat, 4204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20209 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 20865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4204 IncrementalHoareTripleChecker+Valid, 16661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:13,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20209 Valid, 656 Invalid, 20865 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4204 Valid, 16661 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2023-04-01 22:25:13,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179688 states. [2023-04-01 22:25:15,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179688 to 168142. [2023-04-01 22:25:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168142 states, 164671 states have (on average 1.048879280504764) internal successors, (172720), 165362 states have internal predecessors, (172720), 1019 states have call successors, (1019), 854 states have call predecessors, (1019), 2451 states have return successors, (18648), 1925 states have call predecessors, (18648), 1018 states have call successors, (18648) [2023-04-01 22:25:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168142 states to 168142 states and 192387 transitions. [2023-04-01 22:25:16,586 INFO L78 Accepts]: Start accepts. Automaton has 168142 states and 192387 transitions. Word has length 1280 [2023-04-01 22:25:16,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:25:16,587 INFO L495 AbstractCegarLoop]: Abstraction has 168142 states and 192387 transitions. [2023-04-01 22:25:16,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 80.04166666666667) internal successors, (1921), 22 states have internal predecessors, (1921), 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 22:25:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand 168142 states and 192387 transitions. [2023-04-01 22:25:16,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1206 [2023-04-01 22:25:16,993 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:25:16,994 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:17,003 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 22:25:17,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:17,203 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:25:17,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:25:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1478126612, now seen corresponding path program 1 times [2023-04-01 22:25:17,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:25:17,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101329463] [2023-04-01 22:25:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:17,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:25:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:19,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:25:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:25:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:19,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:25:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:19,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-04-01 22:25:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:19,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2023-04-01 22:25:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:21,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:25:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:21,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:25:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 580 proven. 44 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-04-01 22:25:22,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:25:22,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101329463] [2023-04-01 22:25:22,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101329463] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:25:22,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472476796] [2023-04-01 22:25:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:25:22,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:25:22,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:25:22,248 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 22:25:22,250 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 22:25:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:25:22,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 22:25:22,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:25:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 625 proven. 2 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-04-01 22:25:23,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 22:25:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 625 proven. 2 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-04-01 22:25:25,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472476796] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 22:25:25,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 22:25:25,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 6] total 17 [2023-04-01 22:25:25,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716571055] [2023-04-01 22:25:25,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 22:25:25,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 22:25:25,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:25:25,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 22:25:25,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-04-01 22:25:25,550 INFO L87 Difference]: Start difference. First operand 168142 states and 192387 transitions. Second operand has 17 states, 17 states have (on average 136.1764705882353) internal successors, (2315), 15 states have internal predecessors, (2315), 9 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:25:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:25:53,689 INFO L93 Difference]: Finished difference Result 418568 states and 482929 transitions. [2023-04-01 22:25:53,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-04-01 22:25:53,690 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 136.1764705882353) internal successors, (2315), 15 states have internal predecessors, (2315), 9 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) Word has length 1205 [2023-04-01 22:25:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:25:54,790 INFO L225 Difference]: With dead ends: 418568 [2023-04-01 22:25:54,790 INFO L226 Difference]: Without dead ends: 243259 [2023-04-01 22:25:55,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2581 GetRequests, 2485 SyntacticMatches, 4 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2922 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1425, Invalid=7317, Unknown=0, NotChecked=0, Total=8742 [2023-04-01 22:25:55,051 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 6873 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 39700 mSolverCounterSat, 4637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6883 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 44337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4637 IncrementalHoareTripleChecker+Valid, 39700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2023-04-01 22:25:55,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6883 Valid, 988 Invalid, 44337 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4637 Valid, 39700 Invalid, 0 Unknown, 0 Unchecked, 22.1s Time] [2023-04-01 22:25:55,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243259 states. [2023-04-01 22:25:59,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243259 to 227959. [2023-04-01 22:25:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227959 states, 223294 states have (on average 1.039606975556889) internal successors, (232138), 224265 states have internal predecessors, (232138), 1370 states have call successors, (1370), 1158 states have call predecessors, (1370), 3294 states have return successors, (23032), 2535 states have call predecessors, (23032), 1369 states have call successors, (23032) [2023-04-01 22:26:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227959 states to 227959 states and 256540 transitions. [2023-04-01 22:26:00,104 INFO L78 Accepts]: Start accepts. Automaton has 227959 states and 256540 transitions. Word has length 1205 [2023-04-01 22:26:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:00,105 INFO L495 AbstractCegarLoop]: Abstraction has 227959 states and 256540 transitions. [2023-04-01 22:26:00,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 136.1764705882353) internal successors, (2315), 15 states have internal predecessors, (2315), 9 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2023-04-01 22:26:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 227959 states and 256540 transitions. [2023-04-01 22:26:00,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1449 [2023-04-01 22:26:00,590 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:00,591 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:26:00,598 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 22:26:00,798 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,SelfDestructingSolverStorable12 [2023-04-01 22:26:00,799 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:00,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:00,800 INFO L85 PathProgramCache]: Analyzing trace with hash -703937159, now seen corresponding path program 1 times [2023-04-01 22:26:00,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:00,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305491946] [2023-04-01 22:26:00,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:00,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:02,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:02,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:02,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-04-01 22:26:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:02,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-04-01 22:26:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:02,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2023-04-01 22:26:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:26:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-04-01 22:26:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:03,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:26:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:04,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:26:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1603 backedges. 862 proven. 44 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2023-04-01 22:26:04,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:04,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305491946] [2023-04-01 22:26:04,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305491946] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:04,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233186572] [2023-04-01 22:26:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:04,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:04,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:04,377 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 22:26:04,379 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 22:26:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:04,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 22:26:04,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 22:26:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1603 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 1051 trivial. 0 not checked. [2023-04-01 22:26:05,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 22:26:05,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233186572] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 22:26:05,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 22:26:05,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 22:26:05,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474157295] [2023-04-01 22:26:05,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 22:26:05,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 22:26:05,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 22:26:05,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 22:26:05,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 22:26:05,196 INFO L87 Difference]: Start difference. First operand 227959 states and 256540 transitions. Second operand has 5 states, 5 states have (on average 167.6) internal successors, (838), 4 states have internal predecessors, (838), 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 22:26:10,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 22:26:10,783 INFO L93 Difference]: Finished difference Result 443547 states and 493816 transitions. [2023-04-01 22:26:10,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 22:26:10,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 167.6) internal successors, (838), 4 states have internal predecessors, (838), 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 1448 [2023-04-01 22:26:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 22:26:11,527 INFO L225 Difference]: With dead ends: 443547 [2023-04-01 22:26:11,528 INFO L226 Difference]: Without dead ends: 216361 [2023-04-01 22:26:11,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1479 GetRequests, 1466 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-04-01 22:26:11,686 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 2068 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4345 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 4814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 4345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 22:26:11,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2068 Valid, 149 Invalid, 4814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 4345 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 22:26:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216361 states. [2023-04-01 22:26:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216361 to 210902. [2023-04-01 22:26:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210902 states, 206656 states have (on average 1.038943945493961) internal successors, (214704), 207612 states have internal predecessors, (214704), 1074 states have call successors, (1074), 1074 states have call predecessors, (1074), 3171 states have return successors, (15815), 2215 states have call predecessors, (15815), 1073 states have call successors, (15815) [2023-04-01 22:26:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210902 states to 210902 states and 231593 transitions. [2023-04-01 22:26:15,472 INFO L78 Accepts]: Start accepts. Automaton has 210902 states and 231593 transitions. Word has length 1448 [2023-04-01 22:26:15,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 22:26:15,473 INFO L495 AbstractCegarLoop]: Abstraction has 210902 states and 231593 transitions. [2023-04-01 22:26:15,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.6) internal successors, (838), 4 states have internal predecessors, (838), 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 22:26:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 210902 states and 231593 transitions. [2023-04-01 22:26:15,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1512 [2023-04-01 22:26:15,646 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 22:26:15,647 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 22:26:15,657 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 22:26:15,857 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,SelfDestructingSolverStorable13 [2023-04-01 22:26:15,858 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 22:26:15,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 22:26:15,858 INFO L85 PathProgramCache]: Analyzing trace with hash -611772382, now seen corresponding path program 1 times [2023-04-01 22:26:15,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 22:26:15,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614282026] [2023-04-01 22:26:15,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:15,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 22:26:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 22:26:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 22:26:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:18,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-04-01 22:26:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:18,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-04-01 22:26:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:26:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2023-04-01 22:26:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:19,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 22:26:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:20,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 22:26:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 452 proven. 129 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-04-01 22:26:20,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 22:26:20,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614282026] [2023-04-01 22:26:20,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614282026] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 22:26:20,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412612] [2023-04-01 22:26:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 22:26:20,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 22:26:20,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 22:26:20,430 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 22:26:20,431 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 22:26:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 22:26:20,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 1912 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-01 22:26:20,806 INFO L285 TraceCheckSpWp]: Computing forward predicates...