/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/Problem18_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:39:01,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:39:01,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:39:01,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:39:01,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:39:01,522 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:39:01,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:39:01,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:39:01,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:39:01,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:39:01,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:39:01,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:39:01,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:39:01,524 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:39:01,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:39:01,525 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:39:01,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:39:01,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:39:01,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:39:01,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:39:01,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:39:01,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:39:01,525 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:39:01,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:39:01,526 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:39:01,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:39:01,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:39:01,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:39:01,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:39:01,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:39:01,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:39:01,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:39:01,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:39:01,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:39:01,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:39:01,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:39:01,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:39:01,527 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:39:01,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:39:01,527 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:39:01,527 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:39:01,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:39:01,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:39:01,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:39:01,712 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:39:01,713 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:39:01,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label09.c [2023-04-01 23:39:02,653 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:39:02,958 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:39:02,958 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label09.c [2023-04-01 23:39:02,979 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743477665/c16a46ce58894284958b146bbac9d84f/FLAG110f43668 [2023-04-01 23:39:02,991 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/743477665/c16a46ce58894284958b146bbac9d84f [2023-04-01 23:39:02,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:39:02,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:39:02,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:39:02,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:39:02,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:39:02,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:39:02" (1/1) ... [2023-04-01 23:39:03,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eda5e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:02, skipping insertion in model container [2023-04-01 23:39:03,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:39:02" (1/1) ... [2023-04-01 23:39:03,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:39:03,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:39:03,221 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/Problem18_label09.c[1446,1459] [2023-04-01 23:39:03,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:39:03,711 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:39:03,725 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/Problem18_label09.c[1446,1459] [2023-04-01 23:39:03,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:39:03,932 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:39:03,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:03 WrapperNode [2023-04-01 23:39:03,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:39:03,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:39:03,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:39:03,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:39:03,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:03" (1/1) ... [2023-04-01 23:39:03,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:03" (1/1) ... [2023-04-01 23:39:03,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:03" (1/1) ... [2023-04-01 23:39:03,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:03" (1/1) ... [2023-04-01 23:39:04,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:03" (1/1) ... [2023-04-01 23:39:04,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:03" (1/1) ... [2023-04-01 23:39:04,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:03" (1/1) ... [2023-04-01 23:39:04,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:03" (1/1) ... [2023-04-01 23:39:04,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:39:04,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:39:04,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:39:04,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:39:04,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:03" (1/1) ... [2023-04-01 23:39:04,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:39:04,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:04,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:39:04,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:39:04,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:39:04,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:39:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:39:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:39:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:39:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:39:04,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:39:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:39:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:39:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:39:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:39:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:39:04,220 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:39:04,221 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:39:06,410 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:39:06,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:39:06,419 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:39:06,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:39:06 BoogieIcfgContainer [2023-04-01 23:39:06,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:39:06,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:39:06,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:39:06,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:39:06,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:39:02" (1/3) ... [2023-04-01 23:39:06,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c3a3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:39:06, skipping insertion in model container [2023-04-01 23:39:06,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:03" (2/3) ... [2023-04-01 23:39:06,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c3a3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:39:06, skipping insertion in model container [2023-04-01 23:39:06,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:39:06" (3/3) ... [2023-04-01 23:39:06,426 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label09.c [2023-04-01 23:39:06,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:39:06,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:39:06,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:39:06,488 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;@a45bf9f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:39:06,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:39:06,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 23:39:06,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-04-01 23:39:06,498 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:06,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:06,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:06,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:06,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1421117437, now seen corresponding path program 1 times [2023-04-01 23:39:06,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:06,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148430176] [2023-04-01 23:39:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:39:06,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:06,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148430176] [2023-04-01 23:39:06,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148430176] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:06,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:39:06,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:39:06,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415345324] [2023-04-01 23:39:06,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:06,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:39:06,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:06,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:39:06,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:39:06,849 INFO L87 Difference]: Start difference. First operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:39:10,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:10,630 INFO L93 Difference]: Finished difference Result 2286 states and 4364 transitions. [2023-04-01 23:39:10,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:39:10,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 16 [2023-04-01 23:39:10,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:10,659 INFO L225 Difference]: With dead ends: 2286 [2023-04-01 23:39:10,659 INFO L226 Difference]: Without dead ends: 1432 [2023-04-01 23:39:10,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:39:10,666 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2269 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3226 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 3226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:10,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2269 Valid, 38 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 3226 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-01 23:39:10,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-04-01 23:39:10,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1428. [2023-04-01 23:39:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1406 states have (on average 1.5896159317211949) internal successors, (2235), 1408 states have internal predecessors, (2235), 8 states have call successors, (8), 8 states have call predecessors, (8), 13 states have return successors, (19), 11 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:39:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2262 transitions. [2023-04-01 23:39:10,756 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2262 transitions. Word has length 16 [2023-04-01 23:39:10,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:10,756 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2262 transitions. [2023-04-01 23:39:10,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:39:10,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2262 transitions. [2023-04-01 23:39:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 23:39:10,758 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:10,759 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:39:10,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:39:10,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:10,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:10,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1906325955, now seen corresponding path program 1 times [2023-04-01 23:39:10,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:10,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279684567] [2023-04-01 23:39:10,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:10,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:10,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:10,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:39:11,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279684567] [2023-04-01 23:39:11,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279684567] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:11,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:39:11,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 23:39:11,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782453113] [2023-04-01 23:39:11,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:11,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 23:39:11,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:11,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 23:39:11,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:39:11,005 INFO L87 Difference]: Start difference. First operand 1428 states and 2262 transitions. Second operand has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:39:16,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:16,712 INFO L93 Difference]: Finished difference Result 5784 states and 9263 transitions. [2023-04-01 23:39:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 23:39:16,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 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 85 [2023-04-01 23:39:16,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:16,727 INFO L225 Difference]: With dead ends: 5784 [2023-04-01 23:39:16,727 INFO L226 Difference]: Without dead ends: 4362 [2023-04-01 23:39:16,730 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 23:39:16,731 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3829 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 7436 mSolverCounterSat, 1572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3829 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 9008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1572 IncrementalHoareTripleChecker+Valid, 7436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:16,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3829 Valid, 120 Invalid, 9008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1572 Valid, 7436 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-04-01 23:39:16,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2023-04-01 23:39:16,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4345. [2023-04-01 23:39:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4345 states, 4258 states have (on average 1.3586190699859089) internal successors, (5785), 4274 states have internal predecessors, (5785), 20 states have call successors, (20), 20 states have call predecessors, (20), 66 states have return successors, (175), 50 states have call predecessors, (175), 19 states have call successors, (175) [2023-04-01 23:39:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4345 states to 4345 states and 5980 transitions. [2023-04-01 23:39:16,829 INFO L78 Accepts]: Start accepts. Automaton has 4345 states and 5980 transitions. Word has length 85 [2023-04-01 23:39:16,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:16,830 INFO L495 AbstractCegarLoop]: Abstraction has 4345 states and 5980 transitions. [2023-04-01 23:39:16,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:39:16,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4345 states and 5980 transitions. [2023-04-01 23:39:16,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-04-01 23:39:16,842 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:16,843 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:16,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:39:16,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:16,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:16,844 INFO L85 PathProgramCache]: Analyzing trace with hash 552277238, now seen corresponding path program 1 times [2023-04-01 23:39:16,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:16,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235882172] [2023-04-01 23:39:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:16,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:17,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:17,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:17,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:39:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:39:17,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:17,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235882172] [2023-04-01 23:39:17,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235882172] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:17,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333035040] [2023-04-01 23:39:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:17,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:17,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:17,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:39:17,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:39:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:17,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:39:17,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:39:17,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:39:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:39:17,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333035040] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:39:17,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:39:17,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:39:17,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472340736] [2023-04-01 23:39:17,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:39:17,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:39:17,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:17,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:39:17,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:39:17,621 INFO L87 Difference]: Start difference. First operand 4345 states and 5980 transitions. Second operand has 11 states, 11 states have (on average 31.363636363636363) internal successors, (345), 9 states have internal predecessors, (345), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:39:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:23,999 INFO L93 Difference]: Finished difference Result 14716 states and 20304 transitions. [2023-04-01 23:39:24,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 23:39:24,000 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 31.363636363636363) internal successors, (345), 9 states have internal predecessors, (345), 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 211 [2023-04-01 23:39:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:24,033 INFO L225 Difference]: With dead ends: 14716 [2023-04-01 23:39:24,033 INFO L226 Difference]: Without dead ends: 9603 [2023-04-01 23:39:24,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 426 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:39:24,044 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 4523 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 11831 mSolverCounterSat, 2369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4526 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 14200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2369 IncrementalHoareTripleChecker+Valid, 11831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:24,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4526 Valid, 198 Invalid, 14200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2369 Valid, 11831 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-01 23:39:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9603 states. [2023-04-01 23:39:24,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9603 to 9455. [2023-04-01 23:39:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9455 states, 9250 states have (on average 1.1363243243243244) internal successors, (10511), 9299 states have internal predecessors, (10511), 42 states have call successors, (42), 41 states have call predecessors, (42), 162 states have return successors, (428), 114 states have call predecessors, (428), 41 states have call successors, (428) [2023-04-01 23:39:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9455 states to 9455 states and 10981 transitions. [2023-04-01 23:39:24,239 INFO L78 Accepts]: Start accepts. Automaton has 9455 states and 10981 transitions. Word has length 211 [2023-04-01 23:39:24,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:24,240 INFO L495 AbstractCegarLoop]: Abstraction has 9455 states and 10981 transitions. [2023-04-01 23:39:24,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.363636363636363) internal successors, (345), 9 states have internal predecessors, (345), 4 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:39:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 9455 states and 10981 transitions. [2023-04-01 23:39:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-04-01 23:39:24,242 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:24,243 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:24,248 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 23:39:24,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:24,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:24,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:24,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1061768993, now seen corresponding path program 1 times [2023-04-01 23:39:24,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:24,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906443734] [2023-04-01 23:39:24,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:24,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:24,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:24,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:39:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-04-01 23:39:24,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:24,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906443734] [2023-04-01 23:39:24,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906443734] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:24,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896425619] [2023-04-01 23:39:24,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:24,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:24,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:24,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:39:24,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:39:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:24,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:39:24,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-04-01 23:39:24,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:39:24,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896425619] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:24,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:39:24,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 23:39:24,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805248403] [2023-04-01 23:39:24,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:24,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:39:24,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:24,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:39:24,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:39:24,856 INFO L87 Difference]: Start difference. First operand 9455 states and 10981 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:39:26,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:26,507 INFO L93 Difference]: Finished difference Result 17496 states and 20441 transitions. [2023-04-01 23:39:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:39:26,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 244 [2023-04-01 23:39:26,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:26,540 INFO L225 Difference]: With dead ends: 17496 [2023-04-01 23:39:26,540 INFO L226 Difference]: Without dead ends: 9455 [2023-04-01 23:39:26,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:39:26,556 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 759 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:26,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1052 Invalid, 2201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 23:39:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9455 states. [2023-04-01 23:39:26,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9455 to 9447. [2023-04-01 23:39:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9447 states, 9245 states have (on average 1.0918334234721472) internal successors, (10094), 9293 states have internal predecessors, (10094), 42 states have call successors, (42), 41 states have call predecessors, (42), 159 states have return successors, (318), 112 states have call predecessors, (318), 41 states have call successors, (318) [2023-04-01 23:39:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9447 states to 9447 states and 10454 transitions. [2023-04-01 23:39:26,698 INFO L78 Accepts]: Start accepts. Automaton has 9447 states and 10454 transitions. Word has length 244 [2023-04-01 23:39:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:26,698 INFO L495 AbstractCegarLoop]: Abstraction has 9447 states and 10454 transitions. [2023-04-01 23:39:26,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:39:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 9447 states and 10454 transitions. [2023-04-01 23:39:26,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-04-01 23:39:26,700 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:26,700 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 23:39:26,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:39:26,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 23:39:26,907 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:26,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:26,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1656514430, now seen corresponding path program 1 times [2023-04-01 23:39:26,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:26,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487109028] [2023-04-01 23:39:26,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:26,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:27,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:27,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:39:27,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487109028] [2023-04-01 23:39:27,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487109028] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:27,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:39:27,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:39:27,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367746326] [2023-04-01 23:39:27,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:27,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:39:27,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:27,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:39:27,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:39:27,263 INFO L87 Difference]: Start difference. First operand 9447 states and 10454 transitions. Second operand has 7 states, 6 states have (on average 40.666666666666664) internal successors, (244), 4 states have internal predecessors, (244), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:39:30,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:30,253 INFO L93 Difference]: Finished difference Result 21904 states and 24766 transitions. [2023-04-01 23:39:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 23:39:30,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 40.666666666666664) internal successors, (244), 4 states have internal predecessors, (244), 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 250 [2023-04-01 23:39:30,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:30,293 INFO L225 Difference]: With dead ends: 21904 [2023-04-01 23:39:30,294 INFO L226 Difference]: Without dead ends: 13871 [2023-04-01 23:39:30,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:39:30,308 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3612 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4425 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3612 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 4926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 4425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:30,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3612 Valid, 130 Invalid, 4926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 4425 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 23:39:30,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13871 states. [2023-04-01 23:39:30,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13871 to 12391. [2023-04-01 23:39:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12391 states, 12111 states have (on average 1.0778630996614649) internal successors, (13054), 12184 states have internal predecessors, (13054), 53 states have call successors, (53), 53 states have call predecessors, (53), 226 states have return successors, (500), 153 states have call predecessors, (500), 52 states have call successors, (500) [2023-04-01 23:39:30,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12391 states to 12391 states and 13607 transitions. [2023-04-01 23:39:30,496 INFO L78 Accepts]: Start accepts. Automaton has 12391 states and 13607 transitions. Word has length 250 [2023-04-01 23:39:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:30,497 INFO L495 AbstractCegarLoop]: Abstraction has 12391 states and 13607 transitions. [2023-04-01 23:39:30,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 40.666666666666664) internal successors, (244), 4 states have internal predecessors, (244), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:39:30,498 INFO L276 IsEmpty]: Start isEmpty. Operand 12391 states and 13607 transitions. [2023-04-01 23:39:30,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2023-04-01 23:39:30,501 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:30,501 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 23:39:30,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 23:39:30,501 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:30,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:30,501 INFO L85 PathProgramCache]: Analyzing trace with hash -574710181, now seen corresponding path program 1 times [2023-04-01 23:39:30,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:30,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5724265] [2023-04-01 23:39:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:30,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:30,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:30,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:30,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:39:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:30,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:39:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-04-01 23:39:30,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:30,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5724265] [2023-04-01 23:39:30,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5724265] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:30,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203786418] [2023-04-01 23:39:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:30,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:30,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:30,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:39:30,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:39:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:30,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 23:39:30,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-04-01 23:39:31,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:39:31,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203786418] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:31,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:39:31,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-04-01 23:39:31,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393081422] [2023-04-01 23:39:31,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:31,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:39:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:39:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:39:31,622 INFO L87 Difference]: Start difference. First operand 12391 states and 13607 transitions. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 4 states have internal predecessors, (229), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:39:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:34,262 INFO L93 Difference]: Finished difference Result 29268 states and 32008 transitions. [2023-04-01 23:39:34,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:39:34,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 4 states have internal predecessors, (229), 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 331 [2023-04-01 23:39:34,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:34,298 INFO L225 Difference]: With dead ends: 29268 [2023-04-01 23:39:34,299 INFO L226 Difference]: Without dead ends: 16883 [2023-04-01 23:39:34,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:39:34,316 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1872 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 3889 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 4080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 3889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:34,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 122 Invalid, 4080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 3889 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 23:39:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16883 states. [2023-04-01 23:39:34,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16883 to 16009. [2023-04-01 23:39:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16009 states, 15655 states have (on average 1.0652826572979879) internal successors, (16677), 15752 states have internal predecessors, (16677), 68 states have call successors, (68), 68 states have call predecessors, (68), 285 states have return successors, (640), 188 states have call predecessors, (640), 67 states have call successors, (640) [2023-04-01 23:39:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16009 states to 16009 states and 17385 transitions. [2023-04-01 23:39:34,529 INFO L78 Accepts]: Start accepts. Automaton has 16009 states and 17385 transitions. Word has length 331 [2023-04-01 23:39:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:34,529 INFO L495 AbstractCegarLoop]: Abstraction has 16009 states and 17385 transitions. [2023-04-01 23:39:34,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 4 states have internal predecessors, (229), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:39:34,530 INFO L276 IsEmpty]: Start isEmpty. Operand 16009 states and 17385 transitions. [2023-04-01 23:39:34,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-04-01 23:39:34,533 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:34,533 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:34,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 23:39:34,749 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 23:39:34,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:34,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:34,750 INFO L85 PathProgramCache]: Analyzing trace with hash -162374834, now seen corresponding path program 1 times [2023-04-01 23:39:34,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:34,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277783451] [2023-04-01 23:39:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:34,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:35,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:35,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:35,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:39:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-01 23:39:35,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:35,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277783451] [2023-04-01 23:39:35,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277783451] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:35,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497669138] [2023-04-01 23:39:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:35,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:35,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:35,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:39:35,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:39:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:35,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:39:35,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-04-01 23:39:35,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:39:35,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497669138] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:35,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:39:35,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 23:39:35,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096923167] [2023-04-01 23:39:35,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:35,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:39:35,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:35,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:39:35,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:39:35,391 INFO L87 Difference]: Start difference. First operand 16009 states and 17385 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:39:37,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:37,076 INFO L93 Difference]: Finished difference Result 34852 states and 38307 transitions. [2023-04-01 23:39:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:39:37,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 413 [2023-04-01 23:39:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:37,112 INFO L225 Difference]: With dead ends: 34852 [2023-04-01 23:39:37,113 INFO L226 Difference]: Without dead ends: 18849 [2023-04-01 23:39:37,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:39:37,133 INFO L413 NwaCegarLoop]: 1145 mSDtfsCounter, 691 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:37,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1171 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 23:39:37,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18849 states. [2023-04-01 23:39:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18849 to 18849. [2023-04-01 23:39:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18849 states, 18458 states have (on average 1.0633871492035973) internal successors, (19628), 18562 states have internal predecessors, (19628), 80 states have call successors, (80), 80 states have call predecessors, (80), 310 states have return successors, (768), 206 states have call predecessors, (768), 79 states have call successors, (768) [2023-04-01 23:39:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18849 states to 18849 states and 20476 transitions. [2023-04-01 23:39:37,350 INFO L78 Accepts]: Start accepts. Automaton has 18849 states and 20476 transitions. Word has length 413 [2023-04-01 23:39:37,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:37,350 INFO L495 AbstractCegarLoop]: Abstraction has 18849 states and 20476 transitions. [2023-04-01 23:39:37,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-04-01 23:39:37,351 INFO L276 IsEmpty]: Start isEmpty. Operand 18849 states and 20476 transitions. [2023-04-01 23:39:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2023-04-01 23:39:37,354 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:37,354 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:37,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:39:37,559 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 23:39:37,559 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:37,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:37,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1640445543, now seen corresponding path program 1 times [2023-04-01 23:39:37,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:37,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393235534] [2023-04-01 23:39:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:37,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:37,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:38,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:38,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:38,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:39:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:38,325 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 105 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:39:38,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:38,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393235534] [2023-04-01 23:39:38,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393235534] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:38,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056240905] [2023-04-01 23:39:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:38,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:38,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:38,327 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:39:38,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:39:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:38,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:39:38,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 23:39:38,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:39:38,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056240905] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:39:38,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:39:38,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-01 23:39:38,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482675954] [2023-04-01 23:39:38,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:39:38,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:39:38,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:38,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:39:38,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:39:38,776 INFO L87 Difference]: Start difference. First operand 18849 states and 20476 transitions. Second operand has 5 states, 5 states have (on average 80.4) internal successors, (402), 4 states have internal predecessors, (402), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 23:39:41,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:41,611 INFO L93 Difference]: Finished difference Result 51516 states and 57095 transitions. [2023-04-01 23:39:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:39:41,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 4 states have internal predecessors, (402), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 420 [2023-04-01 23:39:41,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:41,684 INFO L225 Difference]: With dead ends: 51516 [2023-04-01 23:39:41,684 INFO L226 Difference]: Without dead ends: 32673 [2023-04-01 23:39:41,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:39:41,714 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1543 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 3916 mSolverCounterSat, 887 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 4803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 887 IncrementalHoareTripleChecker+Valid, 3916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:41,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 113 Invalid, 4803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [887 Valid, 3916 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-01 23:39:41,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32673 states. [2023-04-01 23:39:42,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32673 to 31163. [2023-04-01 23:39:42,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31163 states, 30516 states have (on average 1.059608074452746) internal successors, (32335), 30702 states have internal predecessors, (32335), 131 states have call successors, (131), 131 states have call predecessors, (131), 515 states have return successors, (1761), 329 states have call predecessors, (1761), 130 states have call successors, (1761) [2023-04-01 23:39:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31163 states to 31163 states and 34227 transitions. [2023-04-01 23:39:42,122 INFO L78 Accepts]: Start accepts. Automaton has 31163 states and 34227 transitions. Word has length 420 [2023-04-01 23:39:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:42,123 INFO L495 AbstractCegarLoop]: Abstraction has 31163 states and 34227 transitions. [2023-04-01 23:39:42,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 4 states have internal predecessors, (402), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 23:39:42,123 INFO L276 IsEmpty]: Start isEmpty. Operand 31163 states and 34227 transitions. [2023-04-01 23:39:42,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2023-04-01 23:39:42,145 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:42,146 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:39:42,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-01 23:39:42,351 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 23:39:42,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:42,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash -95777709, now seen corresponding path program 1 times [2023-04-01 23:39:42,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:42,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165515380] [2023-04-01 23:39:42,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:42,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:43,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:43,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:39:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:43,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:39:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:43,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:39:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 215 proven. 10 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2023-04-01 23:39:43,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:43,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165515380] [2023-04-01 23:39:43,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165515380] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:43,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565643582] [2023-04-01 23:39:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:43,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:43,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:43,682 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:39:43,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:39:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:43,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:39:43,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-04-01 23:39:44,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:39:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-04-01 23:39:45,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565643582] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:39:45,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:39:45,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2023-04-01 23:39:45,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951138388] [2023-04-01 23:39:45,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:39:45,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:39:45,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:45,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:39:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:39:45,952 INFO L87 Difference]: Start difference. First operand 31163 states and 34227 transitions. Second operand has 13 states, 13 states have (on average 64.84615384615384) internal successors, (843), 11 states have internal predecessors, (843), 6 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-04-01 23:39:59,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:59,890 INFO L93 Difference]: Finished difference Result 113721 states and 129064 transitions. [2023-04-01 23:39:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-04-01 23:39:59,891 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 64.84615384615384) internal successors, (843), 11 states have internal predecessors, (843), 6 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 947 [2023-04-01 23:39:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:00,019 INFO L225 Difference]: With dead ends: 113721 [2023-04-01 23:40:00,020 INFO L226 Difference]: Without dead ends: 79477 [2023-04-01 23:40:00,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2039 GetRequests, 1964 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1026, Invalid=4674, Unknown=0, NotChecked=0, Total=5700 [2023-04-01 23:40:00,045 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 9645 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 17918 mSolverCounterSat, 3583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9645 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 21501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3583 IncrementalHoareTripleChecker+Valid, 17918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:00,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9645 Valid, 498 Invalid, 21501 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3583 Valid, 17918 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2023-04-01 23:40:00,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79477 states. [2023-04-01 23:40:00,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79477 to 73071. [2023-04-01 23:40:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73071 states, 71867 states have (on average 1.0382512140481723) internal successors, (74616), 72172 states have internal predecessors, (74616), 308 states have call successors, (308), 308 states have call predecessors, (308), 895 states have return successors, (4254), 590 states have call predecessors, (4254), 307 states have call successors, (4254) [2023-04-01 23:40:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73071 states to 73071 states and 79178 transitions. [2023-04-01 23:40:01,011 INFO L78 Accepts]: Start accepts. Automaton has 73071 states and 79178 transitions. Word has length 947 [2023-04-01 23:40:01,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:01,013 INFO L495 AbstractCegarLoop]: Abstraction has 73071 states and 79178 transitions. [2023-04-01 23:40:01,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 64.84615384615384) internal successors, (843), 11 states have internal predecessors, (843), 6 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-04-01 23:40:01,014 INFO L276 IsEmpty]: Start isEmpty. Operand 73071 states and 79178 transitions. [2023-04-01 23:40:01,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2023-04-01 23:40:01,023 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:01,024 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:01,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-01 23:40:01,229 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 23:40:01,230 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:01,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1213092849, now seen corresponding path program 1 times [2023-04-01 23:40:01,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:01,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007372878] [2023-04-01 23:40:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:01,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:02,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:02,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:02,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:02,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:40:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:02,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:40:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:40:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:02,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:40:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 319 proven. 11 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-04-01 23:40:02,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:02,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007372878] [2023-04-01 23:40:02,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007372878] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:02,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518653808] [2023-04-01 23:40:02,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:02,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:02,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:02,654 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:02,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:40:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:02,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:40:02,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2023-04-01 23:40:03,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2023-04-01 23:40:04,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518653808] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:04,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:04,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2023-04-01 23:40:04,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379862660] [2023-04-01 23:40:04,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:04,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:40:04,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:04,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:40:04,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:40:04,395 INFO L87 Difference]: Start difference. First operand 73071 states and 79178 transitions. Second operand has 13 states, 13 states have (on average 64.46153846153847) internal successors, (838), 11 states have internal predecessors, (838), 6 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 23:40:14,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:14,412 INFO L93 Difference]: Finished difference Result 181057 states and 198603 transitions. [2023-04-01 23:40:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-04-01 23:40:14,413 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 64.46153846153847) internal successors, (838), 11 states have internal predecessors, (838), 6 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1090 [2023-04-01 23:40:14,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:14,641 INFO L225 Difference]: With dead ends: 181057 [2023-04-01 23:40:14,642 INFO L226 Difference]: Without dead ends: 107959 [2023-04-01 23:40:14,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2278 GetRequests, 2228 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=514, Invalid=2036, Unknown=0, NotChecked=0, Total=2550 [2023-04-01 23:40:14,920 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 7385 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 14277 mSolverCounterSat, 2205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7385 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 16482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2205 IncrementalHoareTripleChecker+Valid, 14277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:14,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7385 Valid, 385 Invalid, 16482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2205 Valid, 14277 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-04-01 23:40:14,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107959 states. [2023-04-01 23:40:16,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107959 to 100127. [2023-04-01 23:40:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100127 states, 98540 states have (on average 1.0382890196874366) internal successors, (102313), 98930 states have internal predecessors, (102313), 422 states have call successors, (422), 422 states have call predecessors, (422), 1164 states have return successors, (6280), 774 states have call predecessors, (6280), 421 states have call successors, (6280) [2023-04-01 23:40:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100127 states to 100127 states and 109015 transitions. [2023-04-01 23:40:16,575 INFO L78 Accepts]: Start accepts. Automaton has 100127 states and 109015 transitions. Word has length 1090 [2023-04-01 23:40:16,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:16,576 INFO L495 AbstractCegarLoop]: Abstraction has 100127 states and 109015 transitions. [2023-04-01 23:40:16,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 64.46153846153847) internal successors, (838), 11 states have internal predecessors, (838), 6 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 23:40:16,576 INFO L276 IsEmpty]: Start isEmpty. Operand 100127 states and 109015 transitions. [2023-04-01 23:40:16,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1188 [2023-04-01 23:40:16,587 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:16,588 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:40:16,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-01 23:40:16,793 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 23:40:16,795 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:16,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:16,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1500162343, now seen corresponding path program 1 times [2023-04-01 23:40:16,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:16,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138866692] [2023-04-01 23:40:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:16,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:17,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:17,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:17,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:17,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:40:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:17,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:40:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:18,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:40:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:40:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1061 [2023-04-01 23:40:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 468 proven. 12 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2023-04-01 23:40:18,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:18,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138866692] [2023-04-01 23:40:18,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138866692] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:18,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287737115] [2023-04-01 23:40:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:18,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:18,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:18,208 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:18,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:40:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:18,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:40:18,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 476 proven. 8 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2023-04-01 23:40:18,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 482 proven. 2 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2023-04-01 23:40:18,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287737115] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:18,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:18,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 13 [2023-04-01 23:40:18,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287841894] [2023-04-01 23:40:18,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:18,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 23:40:18,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:18,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 23:40:18,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:40:18,936 INFO L87 Difference]: Start difference. First operand 100127 states and 109015 transitions. Second operand has 13 states, 13 states have (on average 69.0) internal successors, (897), 11 states have internal predecessors, (897), 5 states have call successors, (14), 7 states have call predecessors, (14), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 23:40:25,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:25,878 INFO L93 Difference]: Finished difference Result 239293 states and 263192 transitions. [2023-04-01 23:40:25,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:40:25,878 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 69.0) internal successors, (897), 11 states have internal predecessors, (897), 5 states have call successors, (14), 7 states have call predecessors, (14), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 1187 [2023-04-01 23:40:25,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:26,367 INFO L225 Difference]: With dead ends: 239293 [2023-04-01 23:40:26,368 INFO L226 Difference]: Without dead ends: 138218 [2023-04-01 23:40:26,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2424 GetRequests, 2399 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:40:26,437 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 7882 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9139 mSolverCounterSat, 1348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7882 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 10487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1348 IncrementalHoareTripleChecker+Valid, 9139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:26,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7882 Valid, 167 Invalid, 10487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1348 Valid, 9139 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-01 23:40:26,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138218 states. [2023-04-01 23:40:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138218 to 124103. [2023-04-01 23:40:28,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124103 states, 122265 states have (on average 1.0386619228724492) internal successors, (126992), 122688 states have internal predecessors, (126992), 524 states have call successors, (524), 524 states have call predecessors, (524), 1313 states have return successors, (8224), 890 states have call predecessors, (8224), 523 states have call successors, (8224) [2023-04-01 23:40:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124103 states to 124103 states and 135740 transitions. [2023-04-01 23:40:28,515 INFO L78 Accepts]: Start accepts. Automaton has 124103 states and 135740 transitions. Word has length 1187 [2023-04-01 23:40:28,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:28,515 INFO L495 AbstractCegarLoop]: Abstraction has 124103 states and 135740 transitions. [2023-04-01 23:40:28,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 69.0) internal successors, (897), 11 states have internal predecessors, (897), 5 states have call successors, (14), 7 states have call predecessors, (14), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 23:40:28,516 INFO L276 IsEmpty]: Start isEmpty. Operand 124103 states and 135740 transitions. [2023-04-01 23:40:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2023-04-01 23:40:28,527 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:28,528 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:28,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 23:40:28,735 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 23:40:28,736 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:28,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:28,736 INFO L85 PathProgramCache]: Analyzing trace with hash 83663612, now seen corresponding path program 1 times [2023-04-01 23:40:28,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:28,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841356202] [2023-04-01 23:40:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:28,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:30,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:30,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:30,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:30,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:40:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:40:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:30,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:40:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:31,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:40:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:31,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:40:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 449 proven. 39 refuted. 0 times theorem prover too weak. 891 trivial. 0 not checked. [2023-04-01 23:40:31,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:31,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841356202] [2023-04-01 23:40:31,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841356202] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:31,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347092498] [2023-04-01 23:40:31,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:31,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:31,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:31,119 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:31,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:40:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:31,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 1591 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:31,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 460 proven. 2 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2023-04-01 23:40:31,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 460 proven. 2 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2023-04-01 23:40:31,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347092498] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:31,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:31,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 15 [2023-04-01 23:40:31,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974161557] [2023-04-01 23:40:31,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:31,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:40:31,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:31,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:40:31,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:40:31,897 INFO L87 Difference]: Start difference. First operand 124103 states and 135740 transitions. Second operand has 15 states, 15 states have (on average 57.2) internal successors, (858), 13 states have internal predecessors, (858), 7 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2023-04-01 23:40:46,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:46,513 INFO L93 Difference]: Finished difference Result 261145 states and 286868 transitions. [2023-04-01 23:40:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-04-01 23:40:46,514 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 57.2) internal successors, (858), 13 states have internal predecessors, (858), 7 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 1206 [2023-04-01 23:40:46,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:46,984 INFO L225 Difference]: With dead ends: 261145 [2023-04-01 23:40:46,985 INFO L226 Difference]: Without dead ends: 136340 [2023-04-01 23:40:47,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2546 GetRequests, 2478 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=747, Invalid=3809, Unknown=0, NotChecked=0, Total=4556 [2023-04-01 23:40:47,171 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 21118 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 25891 mSolverCounterSat, 1462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21120 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 27353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1462 IncrementalHoareTripleChecker+Valid, 25891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:47,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21120 Valid, 556 Invalid, 27353 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1462 Valid, 25891 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-04-01 23:40:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136340 states. [2023-04-01 23:40:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136340 to 125028. [2023-04-01 23:40:48,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125028 states, 123101 states have (on average 1.0349794071534757) internal successors, (127407), 123571 states have internal predecessors, (127407), 548 states have call successors, (548), 527 states have call predecessors, (548), 1378 states have return successors, (8605), 929 states have call predecessors, (8605), 547 states have call successors, (8605) [2023-04-01 23:40:49,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125028 states to 125028 states and 136560 transitions. [2023-04-01 23:40:49,068 INFO L78 Accepts]: Start accepts. Automaton has 125028 states and 136560 transitions. Word has length 1206 [2023-04-01 23:40:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:49,069 INFO L495 AbstractCegarLoop]: Abstraction has 125028 states and 136560 transitions. [2023-04-01 23:40:49,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 57.2) internal successors, (858), 13 states have internal predecessors, (858), 7 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2023-04-01 23:40:49,069 INFO L276 IsEmpty]: Start isEmpty. Operand 125028 states and 136560 transitions. [2023-04-01 23:40:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1213 [2023-04-01 23:40:49,080 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:49,081 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:49,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-01 23:40:49,287 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 23:40:49,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:49,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash 463914640, now seen corresponding path program 1 times [2023-04-01 23:40:49,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:49,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941085091] [2023-04-01 23:40:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:49,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:50,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:40:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:50,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:40:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:50,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:50,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:40:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:50,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:40:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:50,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:40:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 49 proven. 20 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2023-04-01 23:40:50,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:50,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941085091] [2023-04-01 23:40:50,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941085091] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:50,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986641611] [2023-04-01 23:40:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:50,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:50,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:50,419 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:50,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:40:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:50,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:50,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2023-04-01 23:40:50,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:40:50,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986641611] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:40:50,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:40:50,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-04-01 23:40:50,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091746944] [2023-04-01 23:40:50,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:40:50,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:40:50,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:50,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:40:50,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:40:50,711 INFO L87 Difference]: Start difference. First operand 125028 states and 136560 transitions. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 23:40:52,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:40:52,947 INFO L93 Difference]: Finished difference Result 249318 states and 272338 transitions. [2023-04-01 23:40:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:40:52,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1212 [2023-04-01 23:40:52,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:40:53,520 INFO L225 Difference]: With dead ends: 249318 [2023-04-01 23:40:53,520 INFO L226 Difference]: Without dead ends: 124296 [2023-04-01 23:40:53,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 1230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:40:53,608 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 796 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:40:53,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 797 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 23:40:53,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124296 states. [2023-04-01 23:40:55,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124296 to 124296. [2023-04-01 23:40:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124296 states, 122387 states have (on average 1.0321602784609476) internal successors, (126323), 122851 states have internal predecessors, (126323), 545 states have call successors, (545), 524 states have call predecessors, (545), 1363 states have return successors, (7957), 920 states have call predecessors, (7957), 544 states have call successors, (7957) [2023-04-01 23:40:55,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124296 states to 124296 states and 134825 transitions. [2023-04-01 23:40:55,392 INFO L78 Accepts]: Start accepts. Automaton has 124296 states and 134825 transitions. Word has length 1212 [2023-04-01 23:40:55,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:40:55,393 INFO L495 AbstractCegarLoop]: Abstraction has 124296 states and 134825 transitions. [2023-04-01 23:40:55,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-01 23:40:55,393 INFO L276 IsEmpty]: Start isEmpty. Operand 124296 states and 134825 transitions. [2023-04-01 23:40:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1407 [2023-04-01 23:40:55,576 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:40:55,577 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:40:55,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 23:40:55,782 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 23:40:55,783 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:40:55,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:40:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash -205117281, now seen corresponding path program 1 times [2023-04-01 23:40:55,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:40:55,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513317998] [2023-04-01 23:40:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:55,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:40:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:40:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:40:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:40:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:40:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:40:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:40:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:40:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:40:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1204 [2023-04-01 23:40:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 809 proven. 2 refuted. 0 times theorem prover too weak. 1351 trivial. 0 not checked. [2023-04-01 23:40:56,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:40:56,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513317998] [2023-04-01 23:40:56,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513317998] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:40:56,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981780698] [2023-04-01 23:40:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:40:56,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:40:56,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:40:56,612 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:40:56,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:40:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:40:56,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:40:56,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:40:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 814 proven. 2 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2023-04-01 23:40:57,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:40:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 814 proven. 2 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2023-04-01 23:40:57,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981780698] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:40:57,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:40:57,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:40:57,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791833448] [2023-04-01 23:40:57,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:40:57,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:40:57,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:40:57,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:40:57,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:40:57,557 INFO L87 Difference]: Start difference. First operand 124296 states and 134825 transitions. Second operand has 11 states, 11 states have (on average 101.54545454545455) internal successors, (1117), 9 states have internal predecessors, (1117), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 23:41:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:03,739 INFO L93 Difference]: Finished difference Result 273988 states and 298808 transitions. [2023-04-01 23:41:03,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:41:03,739 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 101.54545454545455) internal successors, (1117), 9 states have internal predecessors, (1117), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 1406 [2023-04-01 23:41:03,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:04,077 INFO L225 Difference]: With dead ends: 273988 [2023-04-01 23:41:04,077 INFO L226 Difference]: Without dead ends: 144025 [2023-04-01 23:41:04,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2864 GetRequests, 2839 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-04-01 23:41:04,208 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 4303 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 9318 mSolverCounterSat, 891 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4309 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 10209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 9318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:04,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4309 Valid, 183 Invalid, 10209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [891 Valid, 9318 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-01 23:41:04,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144025 states. [2023-04-01 23:41:06,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144025 to 134094. [2023-04-01 23:41:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134094 states, 132108 states have (on average 1.0271898749507977) internal successors, (135700), 132577 states have internal predecessors, (135700), 583 states have call successors, (583), 566 states have call predecessors, (583), 1402 states have return successors, (7233), 950 states have call predecessors, (7233), 582 states have call successors, (7233) [2023-04-01 23:41:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134094 states to 134094 states and 143516 transitions. [2023-04-01 23:41:06,691 INFO L78 Accepts]: Start accepts. Automaton has 134094 states and 143516 transitions. Word has length 1406 [2023-04-01 23:41:06,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:06,692 INFO L495 AbstractCegarLoop]: Abstraction has 134094 states and 143516 transitions. [2023-04-01 23:41:06,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 101.54545454545455) internal successors, (1117), 9 states have internal predecessors, (1117), 4 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 23:41:06,692 INFO L276 IsEmpty]: Start isEmpty. Operand 134094 states and 143516 transitions. [2023-04-01 23:41:06,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1456 [2023-04-01 23:41:06,714 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:06,714 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:41:06,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:06,915 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 23:41:06,915 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:06,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:06,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1801515558, now seen corresponding path program 1 times [2023-04-01 23:41:06,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:06,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403805478] [2023-04-01 23:41:06,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:06,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:09,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:10,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:10,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:41:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:10,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:10,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:41:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:41:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:11,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1345 [2023-04-01 23:41:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1856 backedges. 1106 proven. 160 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-04-01 23:41:11,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:11,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403805478] [2023-04-01 23:41:11,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403805478] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:11,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269854166] [2023-04-01 23:41:11,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:11,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:11,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:11,094 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:11,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:41:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:11,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-01 23:41:11,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1856 backedges. 1147 proven. 122 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2023-04-01 23:41:11,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:41:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1856 backedges. 1167 proven. 102 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2023-04-01 23:41:13,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269854166] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:41:13,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:41:13,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 24 [2023-04-01 23:41:13,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101841548] [2023-04-01 23:41:13,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:41:13,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-01 23:41:13,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-01 23:41:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2023-04-01 23:41:13,342 INFO L87 Difference]: Start difference. First operand 134094 states and 143516 transitions. Second operand has 24 states, 24 states have (on average 76.58333333333333) internal successors, (1838), 22 states have internal predecessors, (1838), 13 states have call successors, (22), 10 states have call predecessors, (22), 11 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) [2023-04-01 23:41:39,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:39,316 INFO L93 Difference]: Finished difference Result 314929 states and 337844 transitions. [2023-04-01 23:41:39,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2023-04-01 23:41:39,317 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 76.58333333333333) internal successors, (1838), 22 states have internal predecessors, (1838), 13 states have call successors, (22), 10 states have call predecessors, (22), 11 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) Word has length 1455 [2023-04-01 23:41:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:39,903 INFO L225 Difference]: With dead ends: 314929 [2023-04-01 23:41:39,903 INFO L226 Difference]: Without dead ends: 180139 [2023-04-01 23:41:39,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3179 GetRequests, 3013 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10810 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5152, Invalid=22570, Unknown=0, NotChecked=0, Total=27722 [2023-04-01 23:41:39,997 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 27109 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 32707 mSolverCounterSat, 3313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27109 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 36020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3313 IncrementalHoareTripleChecker+Valid, 32707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:39,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27109 Valid, 779 Invalid, 36020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3313 Valid, 32707 Invalid, 0 Unknown, 0 Unchecked, 19.0s Time] [2023-04-01 23:41:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180139 states. [2023-04-01 23:41:42,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180139 to 160385. [2023-04-01 23:41:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160385 states, 158046 states have (on average 1.0278526504941599) internal successors, (162448), 158592 states have internal predecessors, (162448), 695 states have call successors, (695), 677 states have call predecessors, (695), 1643 states have return successors, (8764), 1115 states have call predecessors, (8764), 694 states have call successors, (8764) [2023-04-01 23:41:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160385 states to 160385 states and 171907 transitions. [2023-04-01 23:41:42,562 INFO L78 Accepts]: Start accepts. Automaton has 160385 states and 171907 transitions. Word has length 1455 [2023-04-01 23:41:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:42,563 INFO L495 AbstractCegarLoop]: Abstraction has 160385 states and 171907 transitions. [2023-04-01 23:41:42,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 76.58333333333333) internal successors, (1838), 22 states have internal predecessors, (1838), 13 states have call successors, (22), 10 states have call predecessors, (22), 11 states have return successors, (20), 13 states have call predecessors, (20), 11 states have call successors, (20) [2023-04-01 23:41:42,564 INFO L276 IsEmpty]: Start isEmpty. Operand 160385 states and 171907 transitions. [2023-04-01 23:41:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1686 [2023-04-01 23:41:42,610 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:42,611 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:41:42,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 23:41:42,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-01 23:41:42,814 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:42,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:42,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1404650651, now seen corresponding path program 1 times [2023-04-01 23:41:42,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:42,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905532127] [2023-04-01 23:41:42,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:42,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:43,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:43,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:43,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:41:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:43,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:41:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:43,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:41:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:41:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1167 [2023-04-01 23:41:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:43,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1240 [2023-04-01 23:41:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2778 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 2691 trivial. 0 not checked. [2023-04-01 23:41:44,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:44,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905532127] [2023-04-01 23:41:44,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905532127] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:44,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200359124] [2023-04-01 23:41:44,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:44,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:44,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:44,028 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:44,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 23:41:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:44,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 2175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:41:44,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2778 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 2691 trivial. 0 not checked. [2023-04-01 23:41:44,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:41:44,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200359124] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:41:44,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:41:44,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:41:44,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75007854] [2023-04-01 23:41:44,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:41:44,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:41:44,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:44,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:41:44,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:41:44,439 INFO L87 Difference]: Start difference. First operand 160385 states and 171907 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-01 23:41:46,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:41:46,985 INFO L93 Difference]: Finished difference Result 312888 states and 335096 transitions. [2023-04-01 23:41:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:41:46,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 1685 [2023-04-01 23:41:46,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:41:47,302 INFO L225 Difference]: With dead ends: 312888 [2023-04-01 23:41:47,302 INFO L226 Difference]: Without dead ends: 153219 [2023-04-01 23:41:47,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1714 GetRequests, 1710 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:41:47,552 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 723 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:41:47,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 169 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 23:41:47,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153219 states. [2023-04-01 23:41:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153219 to 148283. [2023-04-01 23:41:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148283 states, 146110 states have (on average 1.0192663062076517) internal successors, (148925), 146621 states have internal predecessors, (148925), 633 states have call successors, (633), 626 states have call predecessors, (633), 1539 states have return successors, (5535), 1035 states have call predecessors, (5535), 632 states have call successors, (5535) [2023-04-01 23:41:49,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148283 states to 148283 states and 155093 transitions. [2023-04-01 23:41:49,738 INFO L78 Accepts]: Start accepts. Automaton has 148283 states and 155093 transitions. Word has length 1685 [2023-04-01 23:41:49,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:41:49,739 INFO L495 AbstractCegarLoop]: Abstraction has 148283 states and 155093 transitions. [2023-04-01 23:41:49,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-01 23:41:49,739 INFO L276 IsEmpty]: Start isEmpty. Operand 148283 states and 155093 transitions. [2023-04-01 23:41:49,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1820 [2023-04-01 23:41:49,794 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:41:49,794 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:41:49,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-04-01 23:41:50,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-01 23:41:50,001 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:41:50,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:41:50,002 INFO L85 PathProgramCache]: Analyzing trace with hash 683281788, now seen corresponding path program 1 times [2023-04-01 23:41:50,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:41:50,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819994506] [2023-04-01 23:41:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:50,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:41:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:41:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:41:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:41:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:41:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:41:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:41:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:41:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1218 [2023-04-01 23:41:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:41:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1550 [2023-04-01 23:41:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 1098 proven. 275 refuted. 0 times theorem prover too weak. 2267 trivial. 0 not checked. [2023-04-01 23:41:51,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:41:51,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819994506] [2023-04-01 23:41:51,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819994506] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:41:51,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857312169] [2023-04-01 23:41:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:41:51,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:41:51,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:41:51,829 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:41:51,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 23:41:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:41:52,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:41:52,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:41:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 2237 proven. 2 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2023-04-01 23:41:52,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:41:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 1108 proven. 261 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2023-04-01 23:41:53,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857312169] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:41:53,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:41:53,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2023-04-01 23:41:53,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963599391] [2023-04-01 23:41:53,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:41:53,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:41:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:41:53,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:41:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:41:53,265 INFO L87 Difference]: Start difference. First operand 148283 states and 155093 transitions. Second operand has 14 states, 14 states have (on average 127.14285714285714) internal successors, (1780), 12 states have internal predecessors, (1780), 8 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-04-01 23:42:01,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:01,576 INFO L93 Difference]: Finished difference Result 302237 states and 315715 transitions. [2023-04-01 23:42:01,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 23:42:01,576 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 127.14285714285714) internal successors, (1780), 12 states have internal predecessors, (1780), 8 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 1819 [2023-04-01 23:42:01,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:02,019 INFO L225 Difference]: With dead ends: 302237 [2023-04-01 23:42:02,019 INFO L226 Difference]: Without dead ends: 153944 [2023-04-01 23:42:02,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3706 GetRequests, 3674 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2023-04-01 23:42:02,108 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 9548 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 11876 mSolverCounterSat, 1955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9548 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 13831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1955 IncrementalHoareTripleChecker+Valid, 11876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:02,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9548 Valid, 215 Invalid, 13831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1955 Valid, 11876 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-04-01 23:42:02,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153944 states. [2023-04-01 23:42:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153944 to 148271. [2023-04-01 23:42:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148271 states, 145811 states have (on average 1.0175981235983569) internal successors, (148377), 146504 states have internal predecessors, (148377), 623 states have call successors, (623), 623 states have call predecessors, (623), 1836 states have return successors, (4909), 1143 states have call predecessors, (4909), 622 states have call successors, (4909) [2023-04-01 23:42:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148271 states to 148271 states and 153909 transitions. [2023-04-01 23:42:04,045 INFO L78 Accepts]: Start accepts. Automaton has 148271 states and 153909 transitions. Word has length 1819 [2023-04-01 23:42:04,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:42:04,046 INFO L495 AbstractCegarLoop]: Abstraction has 148271 states and 153909 transitions. [2023-04-01 23:42:04,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 127.14285714285714) internal successors, (1780), 12 states have internal predecessors, (1780), 8 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2023-04-01 23:42:04,047 INFO L276 IsEmpty]: Start isEmpty. Operand 148271 states and 153909 transitions. [2023-04-01 23:42:04,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1875 [2023-04-01 23:42:04,313 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:42:04,314 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:42:04,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-01 23:42:04,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:04,515 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:42:04,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:42:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1267163266, now seen corresponding path program 1 times [2023-04-01 23:42:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:42:04,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94563503] [2023-04-01 23:42:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:04,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:42:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:09,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:42:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:42:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:09,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:42:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:42:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:09,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:42:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:42:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:09,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2023-04-01 23:42:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:10,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1218 [2023-04-01 23:42:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:10,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:42:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:10,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1605 [2023-04-01 23:42:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3695 backedges. 1414 proven. 1576 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2023-04-01 23:42:10,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:42:10,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94563503] [2023-04-01 23:42:10,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94563503] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:42:10,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487460641] [2023-04-01 23:42:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:10,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:42:10,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:42:10,276 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 23:42:10,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-01 23:42:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:42:10,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 2359 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:42:10,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:42:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3695 backedges. 2495 proven. 2 refuted. 0 times theorem prover too weak. 1198 trivial. 0 not checked. [2023-04-01 23:42:10,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:42:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3695 backedges. 579 proven. 242 refuted. 0 times theorem prover too weak. 2874 trivial. 0 not checked. [2023-04-01 23:42:13,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487460641] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:42:13,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:42:13,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 22 [2023-04-01 23:42:13,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021434443] [2023-04-01 23:42:13,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:42:13,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-01 23:42:13,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:42:13,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-01 23:42:13,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-04-01 23:42:13,145 INFO L87 Difference]: Start difference. First operand 148271 states and 153909 transitions. Second operand has 22 states, 22 states have (on average 94.13636363636364) internal successors, (2071), 20 states have internal predecessors, (2071), 10 states have call successors, (22), 7 states have call predecessors, (22), 12 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) [2023-04-01 23:42:38,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:42:38,856 INFO L93 Difference]: Finished difference Result 316547 states and 328938 transitions. [2023-04-01 23:42:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-04-01 23:42:38,857 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 94.13636363636364) internal successors, (2071), 20 states have internal predecessors, (2071), 10 states have call successors, (22), 7 states have call predecessors, (22), 12 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) Word has length 1874 [2023-04-01 23:42:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:42:39,200 INFO L225 Difference]: With dead ends: 316547 [2023-04-01 23:42:39,200 INFO L226 Difference]: Without dead ends: 168992 [2023-04-01 23:42:39,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3991 GetRequests, 3861 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6139 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1827, Invalid=15203, Unknown=0, NotChecked=0, Total=17030 [2023-04-01 23:42:39,332 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 11528 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 52431 mSolverCounterSat, 1456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11528 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 53887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1456 IncrementalHoareTripleChecker+Valid, 52431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:42:39,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11528 Valid, 1572 Invalid, 53887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1456 Valid, 52431 Invalid, 0 Unknown, 0 Unchecked, 20.9s Time] [2023-04-01 23:42:39,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168992 states. [2023-04-01 23:42:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168992 to 167532. [2023-04-01 23:42:41,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167532 states, 164783 states have (on average 1.015772258060601) internal successors, (167382), 165550 states have internal predecessors, (167382), 704 states have call successors, (704), 704 states have call predecessors, (704), 2044 states have return successors, (5049), 1277 states have call predecessors, (5049), 703 states have call successors, (5049) [2023-04-01 23:42:41,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167532 states to 167532 states and 173135 transitions. [2023-04-01 23:42:41,786 INFO L78 Accepts]: Start accepts. Automaton has 167532 states and 173135 transitions. Word has length 1874 [2023-04-01 23:42:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:42:41,787 INFO L495 AbstractCegarLoop]: Abstraction has 167532 states and 173135 transitions. [2023-04-01 23:42:41,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 94.13636363636364) internal successors, (2071), 20 states have internal predecessors, (2071), 10 states have call successors, (22), 7 states have call predecessors, (22), 12 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) [2023-04-01 23:42:41,787 INFO L276 IsEmpty]: Start isEmpty. Operand 167532 states and 173135 transitions. [2023-04-01 23:42:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2062 [2023-04-01 23:42:42,042 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:42:42,043 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 23:42:42,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-04-01 23:42:42,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-01 23:42:42,244 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:42:42,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:42:42,244 INFO L85 PathProgramCache]: Analyzing trace with hash -360921975, now seen corresponding path program 1 times [2023-04-01 23:42:42,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:42:42,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620607638] [2023-04-01 23:42:42,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:42:42,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:42:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat